diff --git a/.gitignore b/.gitignore index 98cb31e5b..47d8f5c78 100644 --- a/.gitignore +++ b/.gitignore @@ -6,8 +6,7 @@ packages/remark-parse/lib/*.d.ts packages/remark-parse/test.d.ts packages/remark-stringify/lib/*.d.ts packages/remark-stringify/test.d.ts -script/**/*.d.ts -test/**/*.d.ts +test.d.ts .DS_Store *.log yarn.lock diff --git a/package.json b/package.json index 6492553de..3178437dc 100644 --- a/package.json +++ b/package.json @@ -20,9 +20,6 @@ "@types/mdast": "^4.0.0", "@types/node": "^20.0.0", "c8": "^8.0.0", - "camelcase": "^8.0.0", - "execa": "^8.0.0", - "mdast-util-assert": "^5.0.0", "mdast-util-gfm": "^3.0.0", "micromark-extension-gfm": "^3.0.0", "prettier": "^3.0.0", @@ -39,7 +36,7 @@ "format": "prettier . --log-level warn --write && xo --fix", "prepack": "npm run build && npm run format", "test": "npm run build && npm run format && npm run test-coverage", - "test-api": "npm run test --workspaces && node --conditions development test/index.js", + "test-api": "node --conditions development test.js", "test-coverage": "c8 --100 --reporter lcov npm run test-api" }, "prettier": { diff --git a/packages/remark-cli/package.json b/packages/remark-cli/package.json index 98260f010..152c81147 100644 --- a/packages/remark-cli/package.json +++ b/packages/remark-cli/package.json @@ -36,9 +36,7 @@ "remark": "^14.0.0", "unified-args": "^11.0.0" }, - "scripts": { - "test": "node --conditions development test.js" - }, + "scripts": {}, "typeCoverage": { "atLeast": 100, "detail": true, diff --git a/packages/remark-cli/test.js b/packages/remark-cli/test.js deleted file mode 100644 index 5fea3bd79..000000000 --- a/packages/remark-cli/test.js +++ /dev/null @@ -1,78 +0,0 @@ -import assert from 'node:assert/strict' -import {fileURLToPath} from 'node:url' -import test from 'node:test' -import {execa} from 'execa' - -test('remark-cli', async (t) => { - await t.test('should show help on `--help`', async () => { - const bin = fileURLToPath(new URL('cli.js', import.meta.url)) - - const result = await execa(bin, ['--help']) - - assert.equal( - result.stdout, - [ - 'Usage: remark [options] [path | glob ...]', - '', - ' Command line interface to inspect and change markdown files with remark', - '', - 'Options:', - '', - ' --[no-]color specify color in report (on by default)', - ' --[no-]config search for configuration files (on by default)', - ' -e --ext specify extensions', - ' --file-path specify path to process as', - ' -f --frail exit with 1 on warnings', - ' -h --help output usage information', - ' --[no-]ignore search for ignore files (on by default)', - ' -i --ignore-path specify ignore file', - ' --ignore-path-resolve-from cwd|dir resolve patterns in `ignore-path` from its directory or cwd', - ' --ignore-pattern specify ignore patterns', - ' --inspect output formatted syntax tree', - ' -o --output [path] specify output location', - ' -q --quiet output only warnings and errors', - ' -r --rc-path specify configuration file', - ' --report specify reporter', - ' -s --setting specify settings', - ' -S --silent output only errors', - ' --silently-ignore do not fail when given ignored files', - ' --[no-]stdout specify writing to stdout (on by default)', - ' -t --tree specify input and output as syntax tree', - ' --tree-in specify input as syntax tree', - ' --tree-out output syntax tree', - ' -u --use use plugins', - ' --verbose report extra info for messages', - ' -v --version output version number', - ' -w --watch watch for changes and reprocess', - '', - 'Examples:', - '', - ' # Process `input.md`', - ' $ remark input.md -o output.md', - '', - ' # Pipe', - ' $ remark < input.md > output.md', - '', - ' # Rewrite all applicable files', - ' $ remark . -o' - ].join('\n'), - 'should show help' - ) - }) - - await t.test('should show version on `--version`', async () => { - const bin = fileURLToPath(new URL('cli.js', import.meta.url)) - - const result = await execa(bin, ['--version']) - - assert.ok( - /remark: \d+\.\d+\.\d+/.test(result.stdout), - 'should include remark version' - ) - - assert.ok( - /remark-cli: \d+\.\d+\.\d+/.test(result.stdout), - 'should include remark-cli version' - ) - }) -}) diff --git a/packages/remark-parse/package.json b/packages/remark-parse/package.json index d344be910..a3161cebc 100644 --- a/packages/remark-parse/package.json +++ b/packages/remark-parse/package.json @@ -45,9 +45,7 @@ "mdast-util-from-markdown": "^2.0.0", "unified": "^11.0.0" }, - "scripts": { - "test": "node --conditions development test.js" - }, + "scripts": {}, "typeCoverage": { "atLeast": 100, "detail": true, diff --git a/packages/remark-parse/test.js b/packages/remark-parse/test.js deleted file mode 100644 index 36be56ded..000000000 --- a/packages/remark-parse/test.js +++ /dev/null @@ -1,68 +0,0 @@ -import assert from 'node:assert/strict' -import test from 'node:test' -import {unified} from 'unified' -import {gfm} from 'micromark-extension-gfm' -import {gfmFromMarkdown} from 'mdast-util-gfm' -import {removePosition} from 'unist-util-remove-position' -import remarkParse from './index.js' - -test('remarkParse', async (t) => { - assert.equal( - unified().use(remarkParse).parse('Alfred').children.length, - 1, - 'should accept a `string`' - ) - - await t.test('extensions', () => { - const tree = unified() - // @ts-expect-error: to do: type settings. - .data('micromarkExtensions', [gfm()]) - // @ts-expect-error: to do: type settings. - .data('fromMarkdownExtensions', [gfmFromMarkdown()]) - .use(remarkParse) - .parse('* [x] contact@example.com ~~strikethrough~~') - - removePosition(tree, {force: true}) - - assert.deepEqual( - tree, - { - type: 'root', - children: [ - { - type: 'list', - ordered: false, - start: null, - spread: false, - children: [ - { - type: 'listItem', - spread: false, - checked: true, - children: [ - { - type: 'paragraph', - children: [ - { - type: 'link', - title: null, - url: 'mailto:contact@example.com', - children: [{type: 'text', value: 'contact@example.com'}] - }, - {type: 'text', value: ' '}, - { - type: 'delete', - children: [{type: 'text', value: 'strikethrough'}] - } - ] - } - ] - } - ] - } - ] - }, - 'should work' - ) - }) -}) diff --git a/packages/remark-stringify/package.json b/packages/remark-stringify/package.json index dc7412ec0..971a0e762 100644 --- a/packages/remark-stringify/package.json +++ b/packages/remark-stringify/package.json @@ -45,9 +45,7 @@ "mdast-util-to-markdown": "^2.0.0", "unified": "^11.0.0" }, - "scripts": { - "test": "node --conditions development test.js" - }, + "scripts": {}, "typeCoverage": { "atLeast": 100, "detail": true, diff --git a/packages/remark-stringify/test.js b/packages/remark-stringify/test.js deleted file mode 100644 index e00b5a36f..000000000 --- a/packages/remark-stringify/test.js +++ /dev/null @@ -1,625 +0,0 @@ -/** - * @typedef {import('mdast').Root} Root - * @typedef {import('mdast').Content} Content - * @typedef {import('mdast').BlockContent} BlockContent - * @typedef {import('./index.js').Options} Options - */ - -import assert from 'node:assert/strict' -import test from 'node:test' -import {unified} from 'unified' -import {gfmToMarkdown} from 'mdast-util-gfm' -import remarkParse from '../remark-parse/index.js' -import remarkStringify from './index.js' - -test('remarkStringify', async (t) => { - assert.equal( - unified() - .use(remarkStringify) - .stringify({ - type: 'root', - children: [{type: 'html', value: ' - - - -What follows is not an HTML comment because it contains -two consecutive dashes: -. - - - -But this is fine (in commonmark): - - - -And, this is wrong (in commonmark): - ---> - -The end. diff --git a/test/fixtures/input/html-declaration.text b/test/fixtures/input/html-declaration.text deleted file mode 100644 index b7866af6a..000000000 --- a/test/fixtures/input/html-declaration.text +++ /dev/null @@ -1,9 +0,0 @@ - - -foo - - - - - - diff --git a/test/fixtures/input/html-indented.text b/test/fixtures/input/html-indented.text deleted file mode 100644 index 8180471d2..000000000 --- a/test/fixtures/input/html-indented.text +++ /dev/null @@ -1,17 +0,0 @@ -
- *hello* -
- - - - *hello* - - - - - - - - - -alpha diff --git a/test/fixtures/input/html-processing-instruction.text b/test/fixtures/input/html-processing-instruction.text deleted file mode 100644 index 0a9b884e6..000000000 --- a/test/fixtures/input/html-processing-instruction.text +++ /dev/null @@ -1,3 +0,0 @@ -'; -?> diff --git a/test/fixtures/input/html-simple.text b/test/fixtures/input/html-simple.text deleted file mode 100644 index 0c385d4b0..000000000 --- a/test/fixtures/input/html-simple.text +++ /dev/null @@ -1,68 +0,0 @@ -Here's a simple block: - -
- foo -
- -This should be a code block, though: - -
- foo -
- -As should this: - -
foo
- -Now, nested: - -
-
-
- foo -
-
-
- -This should just be an HTML comment: - - - -Multiline: - - - -Code block: - - - -Just plain comment, with trailing spaces on the line: - - - -Code: - -
- -Hr's: - -
- -
- -
- -
- -
- -
- -
- -
- -
diff --git a/test/fixtures/input/html-tags.text b/test/fixtures/input/html-tags.text deleted file mode 100644 index 1031472fb..000000000 --- a/test/fixtures/input/html-tags.text +++ /dev/null @@ -1,110 +0,0 @@ -# Block - -
- - -
- - -
- - -<-article> - - -
). - -![Hello [world]!](./hello-world.html). - -![Hello [world]!](<./hello-world.html>). diff --git a/test/fixtures/input/links-text-empty.text b/test/fixtures/input/links-text-empty.text deleted file mode 100644 index de4edf85f..000000000 --- a/test/fixtures/input/links-text-empty.text +++ /dev/null @@ -1,7 +0,0 @@ -[](./hello-world.html). - -[](<./hello-world.html>). - -![](./hello-world.html). - -![](<./hello-world.html>). diff --git a/test/fixtures/input/links-text-entity-delimiters.text b/test/fixtures/input/links-text-entity-delimiters.text deleted file mode 100644 index 7e5106432..000000000 --- a/test/fixtures/input/links-text-entity-delimiters.text +++ /dev/null @@ -1,15 +0,0 @@ -[Hello [world]!](./hello-world.html). - -[Hello [world]!](<./hello-world.html>). - -![Hello [world]!](./hello-world.html). - -![Hello [world]!](<./hello-world.html>). - -[Hello [world]!](./hello-world.html). - -[Hello [world]!](<./hello-world.html>). - -![Hello [world]!](./hello-world.html). - -![Hello [world]!](<./hello-world.html>). diff --git a/test/fixtures/input/links-text-escaped-delimiters.text b/test/fixtures/input/links-text-escaped-delimiters.text deleted file mode 100644 index 2aa3eece8..000000000 --- a/test/fixtures/input/links-text-escaped-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello \[world\]!](./hello-world.html). - -[Hello \[world\]!](<./hello-world.html>). - -![Hello \[world\]!](./hello-world.html). - -![Hello \[world\]!](<./hello-world.html>). diff --git a/test/fixtures/input/links-text-mismatched-delimiters.text b/test/fixtures/input/links-text-mismatched-delimiters.text deleted file mode 100644 index ecfedd1c4..000000000 --- a/test/fixtures/input/links-text-mismatched-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello [world!](./hello-world.html). - -[Hello [world!](<./hello-world.html>). - -![Hello [world!](./hello-world.html). - -![Hello [world!](<./hello-world.html>). diff --git a/test/fixtures/input/links-title-double-quotes-delimiters.text b/test/fixtures/input/links-title-double-quotes-delimiters.text deleted file mode 100644 index e6f8a7cfc..000000000 --- a/test/fixtures/input/links-title-double-quotes-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html "Hello "World" Hello!"). - -[Hello](<./world.html> "Hello "World" Hello!"). - -![Hello](./world.html "Hello "World" Hello!"). - -![Hello](<./world.html> "Hello "World" Hello!"). diff --git a/test/fixtures/input/links-title-double-quotes-entity-delimiters.text b/test/fixtures/input/links-title-double-quotes-entity-delimiters.text deleted file mode 100644 index be83f9de8..000000000 --- a/test/fixtures/input/links-title-double-quotes-entity-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html "Hello "World" Hello!"). - -[Hello](<./world.html> "Hello "World" Hello!"). - -![Hello](./world.html "Hello "World" Hello!"). - -![Hello](<./world.html> "Hello "World" Hello!"). diff --git a/test/fixtures/input/links-title-double-quotes-escaped-delimiters.text b/test/fixtures/input/links-title-double-quotes-escaped-delimiters.text deleted file mode 100644 index b73e61f13..000000000 --- a/test/fixtures/input/links-title-double-quotes-escaped-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html "Hello \"World\" Hello!"). - -[Hello](<./world.html> "Hello \"World\" Hello!"). - -![Hello](./world.html "Hello \"World\" Hello!"). - -![Hello](<./world.html> "Hello \"World\" Hello!"). diff --git a/test/fixtures/input/links-title-double-quotes-mismatched-delimiters.text b/test/fixtures/input/links-title-double-quotes-mismatched-delimiters.text deleted file mode 100644 index fd48b308b..000000000 --- a/test/fixtures/input/links-title-double-quotes-mismatched-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html "Hello "World Hello!"). - -[Hello](<./world.html> "Hello "World Hello!"). - -![Hello](./world.html "Hello "World Hello!"). - -![Hello](<./world.html> "Hello "World Hello!"). diff --git a/test/fixtures/input/links-title-double-quotes.text b/test/fixtures/input/links-title-double-quotes.text deleted file mode 100644 index 908be3343..000000000 --- a/test/fixtures/input/links-title-double-quotes.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html "Hello World!"). - -[Hello](<./world.html> "Hello World!"). - -![Hello](./world.html "Hello World!"). - -![Hello](<./world.html> "Hello World!"). diff --git a/test/fixtures/input/links-title-empty-double-quotes.text b/test/fixtures/input/links-title-empty-double-quotes.text deleted file mode 100644 index 25b6760ab..000000000 --- a/test/fixtures/input/links-title-empty-double-quotes.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html ""). - -[Hello](<./world.html> ""). - -![Hello](./world.html ""). - -![Hello](<./world.html> ""). diff --git a/test/fixtures/input/links-title-empty-parentheses.text b/test/fixtures/input/links-title-empty-parentheses.text deleted file mode 100644 index fef688d29..000000000 --- a/test/fixtures/input/links-title-empty-parentheses.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html ()). - -[Hello](<./world.html> ()). - -![Hello](./world.html ()). - -![Hello](<./world.html> ()). diff --git a/test/fixtures/input/links-title-empty-single-quotes.text b/test/fixtures/input/links-title-empty-single-quotes.text deleted file mode 100644 index dddc5738d..000000000 --- a/test/fixtures/input/links-title-empty-single-quotes.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html ''). - -[Hello](<./world.html> ''). - -![Hello](./world.html ''). - -![Hello](<./world.html> ''). diff --git a/test/fixtures/input/links-title-parentheses.text b/test/fixtures/input/links-title-parentheses.text deleted file mode 100644 index 848c0f373..000000000 --- a/test/fixtures/input/links-title-parentheses.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html (Hello World!)). - -[Hello](<./world.html> (Hello World!)). - -![Hello](./world.html (Hello World!)). - -![Hello](<./world.html> (Hello World!)). diff --git a/test/fixtures/input/links-title-single-quotes-delimiters.text b/test/fixtures/input/links-title-single-quotes-delimiters.text deleted file mode 100644 index f3545e4c4..000000000 --- a/test/fixtures/input/links-title-single-quotes-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html 'Hello 'World' Hello!'). - -[Hello](<./world.html> 'Hello 'World' Hello!'). - -![Hello](./world.html 'Hello 'World' Hello!'). - -![Hello](<./world.html> 'Hello 'World' Hello!'). diff --git a/test/fixtures/input/links-title-single-quotes-entity-delimiters.text b/test/fixtures/input/links-title-single-quotes-entity-delimiters.text deleted file mode 100644 index 84965072d..000000000 --- a/test/fixtures/input/links-title-single-quotes-entity-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html "Hello 'World' Hello!"). - -[Hello](<./world.html> "Hello 'World' Hello!"). - -![Hello](./world.html "Hello 'World' Hello!"). - -![Hello](<./world.html> "Hello 'World' Hello!"). diff --git a/test/fixtures/input/links-title-single-quotes-escaped-delimiters.text b/test/fixtures/input/links-title-single-quotes-escaped-delimiters.text deleted file mode 100644 index 0c7fd536f..000000000 --- a/test/fixtures/input/links-title-single-quotes-escaped-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html 'Hello \'World\' Hello!'). - -[Hello](<./world.html> 'Hello \'World\' Hello!'). - -![Hello](./world.html 'Hello \'World\' Hello!'). - -![Hello](<./world.html> 'Hello \'World\' Hello!'). diff --git a/test/fixtures/input/links-title-single-quotes-mismatched-delimiters.text b/test/fixtures/input/links-title-single-quotes-mismatched-delimiters.text deleted file mode 100644 index 48cf0f182..000000000 --- a/test/fixtures/input/links-title-single-quotes-mismatched-delimiters.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html 'Hello 'World Hello!'). - -[Hello](<./world.html> 'Hello 'World Hello!'). - -![Hello](./world.html 'Hello 'World Hello!'). - -![Hello](<./world.html> 'Hello 'World Hello!'). diff --git a/test/fixtures/input/links-title-single-quotes.text b/test/fixtures/input/links-title-single-quotes.text deleted file mode 100644 index f67bc2f63..000000000 --- a/test/fixtures/input/links-title-single-quotes.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world.html 'Hello World!'). - -[Hello](<./world.html> 'Hello World!'). - -![Hello](./world.html 'Hello World!'). - -![Hello](<./world.html> 'Hello World!'). diff --git a/test/fixtures/input/links-title-unclosed.text b/test/fixtures/input/links-title-unclosed.text deleted file mode 100644 index 399277bfd..000000000 --- a/test/fixtures/input/links-title-unclosed.text +++ /dev/null @@ -1,23 +0,0 @@ -[Hello](./world.html 'Hello - -[Hello](<./world.html> 'Hello - -![Hello](./world.html 'Hello - -![Hello](<./world.html> 'Hello - -[Hello](./world.html "Hello - -[Hello](<./world.html> "Hello - -![Hello](./world.html "Hello - -![Hello](<./world.html> "Hello - -[Hello](./world.html (Hello - -[Hello](<./world.html> (Hello - -![Hello](./world.html (Hello - -![Hello](<./world.html> (Hello diff --git a/test/fixtures/input/links-url-empty-title-double-quotes.text b/test/fixtures/input/links-url-empty-title-double-quotes.text deleted file mode 100644 index 143eaaa2e..000000000 --- a/test/fixtures/input/links-url-empty-title-double-quotes.text +++ /dev/null @@ -1,11 +0,0 @@ -[Hello]("World!"). - -[Hello]( "World!"). - -[World](<> "World!"). - -![Hello]("World!"). - -![Hello]( "World!"). - -![World](<> "World!"). diff --git a/test/fixtures/input/links-url-empty-title-parentheses.text b/test/fixtures/input/links-url-empty-title-parentheses.text deleted file mode 100644 index c4afbc8f3..000000000 --- a/test/fixtures/input/links-url-empty-title-parentheses.text +++ /dev/null @@ -1,11 +0,0 @@ -[Hello]((World!)). - -[Hello]( (World!)). - -[World](<> (World!)). - -![Hello]((World!)). - -![Hello]( (World!)). - -![World](<> (World!)). diff --git a/test/fixtures/input/links-url-empty-title-single-quotes.text b/test/fixtures/input/links-url-empty-title-single-quotes.text deleted file mode 100644 index 1171ea413..000000000 --- a/test/fixtures/input/links-url-empty-title-single-quotes.text +++ /dev/null @@ -1,11 +0,0 @@ -[Hello]('World!'). - -[Hello]( 'World!'). - -[World](<> 'World!'). - -![Hello]('World!'). - -![Hello]( 'World!'). - -![World](<> 'World!'). diff --git a/test/fixtures/input/links-url-empty.text b/test/fixtures/input/links-url-empty.text deleted file mode 100644 index 437ceb796..000000000 --- a/test/fixtures/input/links-url-empty.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](). - -[World](<>). - -![Hello](). - -![World](<>). diff --git a/test/fixtures/input/links-url-entities.text b/test/fixtures/input/links-url-entities.text deleted file mode 100644 index 5753d3a4e..000000000 --- a/test/fixtures/input/links-url-entities.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](http://www.example.com?param=1®ion=here). - -[World](). - -![Hello](http://www.example.com?param=1®ion=here). - -![World](). diff --git a/test/fixtures/input/links-url-entity-parentheses.text b/test/fixtures/input/links-url-entity-parentheses.text deleted file mode 100644 index b8fdc2f93..000000000 --- a/test/fixtures/input/links-url-entity-parentheses.text +++ /dev/null @@ -1,31 +0,0 @@ -[Hello](./world(and-hello(world)). - -[Hello](<./world(and-hello(world)>). - -[Hello](./world(and)helloworld)). - -[Hello](<./world(and)helloworld)>). - -[Hello](./world(and-hello(world)). - -[Hello](<./world(and-hello(world)>). - -[Hello](./world(and)helloworld)). - -[Hello](<./world(and)helloworld)>). - -![Hello](./world(and-hello(world)). - -![Hello](<./world(and-hello(world)>). - -![Hello](./world(and)helloworld)). - -![Hello](<./world(and)helloworld)>). - -![Hello](./world(and-hello(world)). - -![Hello](<./world(and-hello(world)>). - -![Hello](./world(and)helloworld)). - -![Hello](<./world(and)helloworld)>). diff --git a/test/fixtures/input/links-url-escaped-parentheses.text b/test/fixtures/input/links-url-escaped-parentheses.text deleted file mode 100644 index 0c634db48..000000000 --- a/test/fixtures/input/links-url-escaped-parentheses.text +++ /dev/null @@ -1,15 +0,0 @@ -[Hello](./world\(and-hello\(world\)). - -[Hello](<./world\(and-hello\(world\)>). - -[Hello](./world\(and\)helloworld\)). - -[Hello](<./world\(and\)helloworld\)>). - -![Hello](./world\(and-hello\(world\)). - -![Hello](<./world\(and-hello\(world\)>). - -![Hello](./world\(and\)helloworld\)). - -![Hello](<./world\(and\)helloworld\)>). diff --git a/test/fixtures/input/links-url-mismatched-parentheses.text b/test/fixtures/input/links-url-mismatched-parentheses.text deleted file mode 100644 index 37c779030..000000000 --- a/test/fixtures/input/links-url-mismatched-parentheses.text +++ /dev/null @@ -1,15 +0,0 @@ -[Hello](./world(and-hello(world)). - -[Hello](<./world(and-hello(world)>). - -[Hello](./world(and)helloworld)). - -[Hello](<./world(and)helloworld)>). - -![Hello](./world(and-hello(world)). - -![Hello](<./world(and-hello(world)>). - -![Hello](./world(and)helloworld)). - -![Hello](<./world(and)helloworld)>). diff --git a/test/fixtures/input/links-url-nested-parentheses.text b/test/fixtures/input/links-url-nested-parentheses.text deleted file mode 100644 index eadea0ece..000000000 --- a/test/fixtures/input/links-url-nested-parentheses.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./world(and)hello(world)). - -[Hello](<./world(and)hello(world)>). - -![Hello](./world(and)hello(world)). - -![Hello](<./world(and)hello(world)>). diff --git a/test/fixtures/input/links-url-new-line.text b/test/fixtures/input/links-url-new-line.text deleted file mode 100644 index e03c0e5dd..000000000 --- a/test/fixtures/input/links-url-new-line.text +++ /dev/null @@ -1,11 +0,0 @@ -[Hello](./wo -rld.html). - -[Hello](<./wo -rld.html>). - -![Hello](./wo -rld.png). - -![Hello](<./wo -rld.png>). diff --git a/test/fixtures/input/links-url-unclosed.text b/test/fixtures/input/links-url-unclosed.text deleted file mode 100644 index 68ea2686e..000000000 --- a/test/fixtures/input/links-url-unclosed.text +++ /dev/null @@ -1,10 +0,0 @@ -[Hello]( - - -[World](< - - -![Hello]( - - -![World](< diff --git a/test/fixtures/input/links-url-white-space.text b/test/fixtures/input/links-url-white-space.text deleted file mode 100644 index f7d66e4b3..000000000 --- a/test/fixtures/input/links-url-white-space.text +++ /dev/null @@ -1,7 +0,0 @@ -[Hello](./wo rld.html). - -[Hello](<./wo rld.html>). - -![Hello](./wo rld.png). - -![Hello](<./wo rld.png>). diff --git a/test/fixtures/input/links.output.noreference-links.text b/test/fixtures/input/links.output.noreference-links.text deleted file mode 100644 index 67d811d90..000000000 --- a/test/fixtures/input/links.output.noreference-links.text +++ /dev/null @@ -1,5 +0,0 @@ -Lorem ipsum dolor sit [amet](http://amet.com "Amet"), consectetur adipiscing elit. Praesent dictum purus ullamcorper ligula semper pellentesque. - -Nulla [finibus](http://finibus.com "Finibus") neque et diam rhoncus convallis. Nam dictum sapien nec sem ultrices fermentum. Nulla [facilisi](http://facilisi.com "Facilisi"). In et feugiat massa. - -Donec sed sodales metus, ut aliquet quam. Suspendisse nec ipsum risus. Interdum et malesuada fames ac ante ipsum primis in [faucibus](http://faucibus.com "Faucibus"). diff --git a/test/fixtures/input/list-after-list.text b/test/fixtures/input/list-after-list.text deleted file mode 100644 index 101994be3..000000000 --- a/test/fixtures/input/list-after-list.text +++ /dev/null @@ -1,16 +0,0 @@ -- item -- item -- item - -1. item -1. item -1. item - ---- - -- item -- item -- item -1. item -1. item -1. item diff --git a/test/fixtures/input/list-and-code.text b/test/fixtures/input/list-and-code.text deleted file mode 100644 index 029528fad..000000000 --- a/test/fixtures/input/list-and-code.text +++ /dev/null @@ -1,4 +0,0 @@ -* This is a list item - - - This is code diff --git a/test/fixtures/input/list-continuation.text b/test/fixtures/input/list-continuation.text deleted file mode 100644 index 5b73b48b9..000000000 --- a/test/fixtures/input/list-continuation.text +++ /dev/null @@ -1,16 +0,0 @@ -1. foo ---- - - -1. foo -```js -code(); -``` - - -1. [foo][] -[foo]: http://google.com - - -1. [^foo] -[^foo]: bar baz. diff --git a/test/fixtures/input/list-indentation.nooutput.text b/test/fixtures/input/list-indentation.nooutput.text deleted file mode 100644 index 27599c34d..000000000 --- a/test/fixtures/input/list-indentation.nooutput.text +++ /dev/null @@ -1,39 +0,0 @@ -- Hello 1a - - World 1a. - -- Hello 1b - - World 1b. - -- Hello 2a - - World 2a. - -- Hello 2b - - World 2b. - -- Hello 3a - - World 3a. - -- Hello 3b - - World 3b. - -- Hello 4a - - World 4a. - -- Hello 4b - - World 4b. - -- Hello 5a - - World 5a. - -- Hello 5b - - World 5b. diff --git a/test/fixtures/input/list-interrupt.text b/test/fixtures/input/list-interrupt.text deleted file mode 100644 index a24c9ff8d..000000000 --- a/test/fixtures/input/list-interrupt.text +++ /dev/null @@ -1,2 +0,0 @@ -* Something -### Some heading diff --git a/test/fixtures/input/list-item-empty-with-white-space.text b/test/fixtures/input/list-item-empty-with-white-space.text deleted file mode 100644 index 277cc02ff..000000000 --- a/test/fixtures/input/list-item-empty-with-white-space.text +++ /dev/null @@ -1 +0,0 @@ -- diff --git a/test/fixtures/input/list-item-empty-without-white-space-eof.text b/test/fixtures/input/list-item-empty-without-white-space-eof.text deleted file mode 100644 index 3cf20d57b..000000000 --- a/test/fixtures/input/list-item-empty-without-white-space-eof.text +++ /dev/null @@ -1 +0,0 @@ -- \ No newline at end of file diff --git a/test/fixtures/input/list-item-empty-without-white-space.text b/test/fixtures/input/list-item-empty-without-white-space.text deleted file mode 100644 index 39cdd0ded..000000000 --- a/test/fixtures/input/list-item-empty-without-white-space.text +++ /dev/null @@ -1 +0,0 @@ -- diff --git a/test/fixtures/input/list-item-empty.text b/test/fixtures/input/list-item-empty.text deleted file mode 100644 index 49466d2c4..000000000 --- a/test/fixtures/input/list-item-empty.text +++ /dev/null @@ -1,7 +0,0 @@ -- foo -- -- bar - - - foo - - - - bar diff --git a/test/fixtures/input/list-item-indent.list-item-indent=mixed.output.text b/test/fixtures/input/list-item-indent.list-item-indent=mixed.output.text deleted file mode 100644 index 4804db88c..000000000 --- a/test/fixtures/input/list-item-indent.list-item-indent=mixed.output.text +++ /dev/null @@ -1,33 +0,0 @@ -1. foo bar baz. - - - -99. foo bar baz. - - - -999. foo bar baz. - - - -1. foo bar baz. - foo bar baz. - - - -99. foo bar baz. - foo bar baz. - - - -999. foo bar baz. - foo bar baz. - - - -* foo bar baz. - - - -* foo bar baz. - foo bar baz. diff --git a/test/fixtures/input/list-item-indent.list-item-indent=one.output.text b/test/fixtures/input/list-item-indent.list-item-indent=one.output.text deleted file mode 100644 index 4804db88c..000000000 --- a/test/fixtures/input/list-item-indent.list-item-indent=one.output.text +++ /dev/null @@ -1,33 +0,0 @@ -1. foo bar baz. - - - -99. foo bar baz. - - - -999. foo bar baz. - - - -1. foo bar baz. - foo bar baz. - - - -99. foo bar baz. - foo bar baz. - - - -999. foo bar baz. - foo bar baz. - - - -* foo bar baz. - - - -* foo bar baz. - foo bar baz. diff --git a/test/fixtures/input/list-item-indent.list-item-indent=tab.output.text b/test/fixtures/input/list-item-indent.list-item-indent=tab.output.text deleted file mode 100644 index f03f535f5..000000000 --- a/test/fixtures/input/list-item-indent.list-item-indent=tab.output.text +++ /dev/null @@ -1,33 +0,0 @@ -1. foo bar baz. - - - -99. foo bar baz. - - - -999. foo bar baz. - - - -1. foo bar baz. - foo bar baz. - - - -99. foo bar baz. - foo bar baz. - - - -999. foo bar baz. - foo bar baz. - - - -* foo bar baz. - - - -* foo bar baz. - foo bar baz. diff --git a/test/fixtures/input/list-item-newline.nooutput.text b/test/fixtures/input/list-item-newline.nooutput.text deleted file mode 100644 index 074ea405c..000000000 --- a/test/fixtures/input/list-item-newline.nooutput.text +++ /dev/null @@ -1,3 +0,0 @@ -- Foo -- - Bar diff --git a/test/fixtures/input/list-item-text.text b/test/fixtures/input/list-item-text.text deleted file mode 100644 index a8f81b140..000000000 --- a/test/fixtures/input/list-item-text.text +++ /dev/null @@ -1,5 +0,0 @@ - * item1 - - * item2 - - text diff --git a/test/fixtures/input/list-mixed-indentation.text b/test/fixtures/input/list-mixed-indentation.text deleted file mode 100644 index 3c259b931..000000000 --- a/test/fixtures/input/list-mixed-indentation.text +++ /dev/null @@ -1,34 +0,0 @@ -# Mixed spaces and tabs - -- (item 1.) Minimum list, equivalent to two spaces - - (item 2.) indented with 1 space, not enough indentation to be a subitem - - (item 2.1.) indented with tab - - -- (item 1.) Minimum list, equivalent to two spaces - - (item 1.1.) indentend with 2 spaces - - (item 1.2.) indented with tab - - -- (item 1.) List with 1 extra space - - (item 1.1.) indentend with 3 spaces - - (item 1.2.) indented with tab - - -- (item 1.) List with 2 extra space, equivalent to 1 tab indentation - - (item 1.1.) indentend with 4 spaces - - (item 1.2.) indented with tab - - -- (item 1.) List with 1 tab, equivalent to 4 spaces - - (item 1.1.) indentend with 4 spaces - - (item 1.2.) indented with tab - - -- (item 1.) list with double indentation and mixed items - - (item 1.1.) normal indentation with 1 tab - - (item 1.1.1.) item with 4 spaces + 4 spaces - - (item 1.1.2.) item with tab + 4 spaces - - (item 1.1.3.) item with 4 spaces + tab - - (item 1.1.4.) item with tab + tab - - (item 1.1.5.) item with 2 spaces + tab + 2 spaces (nasty!) diff --git a/test/fixtures/input/list-ordered-empty-no-space-single-item.text b/test/fixtures/input/list-ordered-empty-no-space-single-item.text deleted file mode 100644 index ee85c37ad..000000000 --- a/test/fixtures/input/list-ordered-empty-no-space-single-item.text +++ /dev/null @@ -1 +0,0 @@ -1. \ No newline at end of file diff --git a/test/fixtures/input/list-ordered-empty-no-space.text b/test/fixtures/input/list-ordered-empty-no-space.text deleted file mode 100644 index 4ca019463..000000000 --- a/test/fixtures/input/list-ordered-empty-no-space.text +++ /dev/null @@ -1,4 +0,0 @@ -1. -2. -3. -4. diff --git a/test/fixtures/input/list-ordered.increment-list-marker.output.text b/test/fixtures/input/list-ordered.increment-list-marker.output.text deleted file mode 100644 index dabcee7bd..000000000 --- a/test/fixtures/input/list-ordered.increment-list-marker.output.text +++ /dev/null @@ -1,3 +0,0 @@ -2. foo; -3. bar; -4. baz. diff --git a/test/fixtures/input/list-ordered.noincrement-list-marker.output.text b/test/fixtures/input/list-ordered.noincrement-list-marker.output.text deleted file mode 100644 index 5c6c8b202..000000000 --- a/test/fixtures/input/list-ordered.noincrement-list-marker.output.text +++ /dev/null @@ -1,3 +0,0 @@ -2. foo; -2. bar; -2. baz. diff --git a/test/fixtures/input/list-unordered-empty-no-space-single-item.text b/test/fixtures/input/list-unordered-empty-no-space-single-item.text deleted file mode 100644 index f59ec20aa..000000000 --- a/test/fixtures/input/list-unordered-empty-no-space-single-item.text +++ /dev/null @@ -1 +0,0 @@ -* \ No newline at end of file diff --git a/test/fixtures/input/list-unordered-empty-no-space.text b/test/fixtures/input/list-unordered-empty-no-space.text deleted file mode 100644 index a0502f72a..000000000 --- a/test/fixtures/input/list-unordered-empty-no-space.text +++ /dev/null @@ -1,4 +0,0 @@ -* -* -* -* diff --git a/test/fixtures/input/list.output.bullet=+.text b/test/fixtures/input/list.output.bullet=+.text deleted file mode 100644 index 2a5b154b9..000000000 --- a/test/fixtures/input/list.output.bullet=+.text +++ /dev/null @@ -1,8 +0,0 @@ -# List bullets - -+ One: - + Nested one; - + Nested two: - + Nested three. -+ Two; -+ Three. diff --git a/test/fixtures/input/list.output.bullet=-.text b/test/fixtures/input/list.output.bullet=-.text deleted file mode 100644 index 6c493059c..000000000 --- a/test/fixtures/input/list.output.bullet=-.text +++ /dev/null @@ -1,8 +0,0 @@ -# List bullets - -- One: - - Nested one; - - Nested two: - - Nested three. -- Two; -- Three. diff --git a/test/fixtures/input/list.output.bullet=-asterisk-.text b/test/fixtures/input/list.output.bullet=-asterisk-.text deleted file mode 100644 index 3dabda833..000000000 --- a/test/fixtures/input/list.output.bullet=-asterisk-.text +++ /dev/null @@ -1,8 +0,0 @@ -# List bullets - -* One: - * Nested one; - * Nested two: - * Nested three. -* Two; -* Three. diff --git a/test/fixtures/input/lists-with-code-and-rules.text b/test/fixtures/input/lists-with-code-and-rules.text deleted file mode 100644 index 0eba40598..000000000 --- a/test/fixtures/input/lists-with-code-and-rules.text +++ /dev/null @@ -1,53 +0,0 @@ -## foo - -1. bar: - - > - one - - two - - three - - four - - five - -1. foo: - - ``` - line 1 - line 2 - ``` - -1. foo: - - 1. foo `bar` bar: - - ``` erb - some code here - ``` - - 2. foo `bar` bar: - - ``` erb - foo - --- - bar - --- - foo - bar - ``` - - 3. foo `bar` bar: - - ``` html - --- - foo - foo - --- - bar - ``` - - 4. foo `bar` bar: - - foo - --- - bar - - 5. foo diff --git a/test/fixtures/input/literal-email.text b/test/fixtures/input/literal-email.text deleted file mode 100644 index 13f848d6b..000000000 --- a/test/fixtures/input/literal-email.text +++ /dev/null @@ -1,18 +0,0 @@ -example1 (1234567@example.com) -example1 (mailto:1234567@example.com) - -Lorem foo@bar.baz ipsum. - -alpha@bravo+charlie.delta isn’t valid, but echo+foxtrot@golf.hotel is. - -Valid: a.b-c_d@a.b - -Valid, but the dot is not part of the email: a.b-c_d@a.b. - -Not valid: a.b-c_d@a.b- - -Not valid: a.b-c_d@a.b_ - -Not valid: alpha@bravo. - -<foo@example.com diff --git a/test/fixtures/input/literal-url.text b/test/fixtures/input/literal-url.text deleted file mode 100644 index 03ccfde62..000000000 --- a/test/fixtures/input/literal-url.text +++ /dev/null @@ -1,57 +0,0 @@ -# Literal URLs - -## Extended www “autolinks” - -Here’s a URL: www.alpha.org. - -Visit www.bravo.org/help for more information. - -Dots cannot appear together: www..one.com and www.two..com. - -And www. is not a URL, neither are www.a nor www.b. - -Underscores cannot be used in the last two domain parts, so www.three.c_m, -and www.fo_ur.com are not URLs, but www.fi_ve.six.com is. - -Valid, and the dot is not part of the link: Visit www.charlie.org. - -Valid, and this dot isn’t part of the link either: Visit www.delta.org/a.b. - -Valid, but two dots are both not part of the URL: www.example.com.. - -Here are parens: www.echo.com/search?q=Markup+(business) - -The last two aren’t part of the -link: www.foxtrot.com/search?q=golf+(hotel))) - -These first and last ones aren’t -either: (www.india.com/search?q=juliett+(kilo)) - -This last one is: (www.lima.com/search?q=mike+(november) - -Paren counting is only done if the last character is a closing -paren: www.google.com/search?q=(business))+ok - -If it “looks” like an entity at the end, it isn’t included. - -This is a whole URL: www.entity.com/search?q=alpha&hl=en - -This is a without the semicolon: www.entity.com/search?q=bravo&; - -This one is without the “entity”: www.entity.com/search?q=charlie&hl; - -This one one too: www.entity.com/search?q=delta© - -Only “named” ones work, numericals don’t, so this one is only without the -semicolon: www.entity.com/search?q=delta∊ - -`<` immediately ends an autolink: www.alpha.org/heThis will make me fail the test because -markdown.js doesnt acknowledge arbitrary html blocks =/ - -* List Item 1 - -* List Item 2 - * New List Item 1 - Hi, this is a list item. - * New List Item 2 - Another item - Code goes here. - Lots of it... - * New List Item 3 - The last item - -* List Item 3 -The final item. - -* List Item 4 -The real final item. - -Paragraph. - -> * bq Item 1 -> * bq Item 2 -> * New bq Item 1 -> * New bq Item 2 -> Text here - -* * * - -> Another blockquote! -> I really need to get -> more creative with -> mockup text.. -> markdown.js breaks here again - -Another Heading -------------- - -Hello *world*. Here is a [link](//hello). -And an image ![alt](src "a title"). -And an image with an empty alt attribute ![](src). - - Code goes here. - Lots of it... diff --git a/test/fixtures/input/markdown-documentation-basics.text b/test/fixtures/input/markdown-documentation-basics.text deleted file mode 100644 index 486055ca7..000000000 --- a/test/fixtures/input/markdown-documentation-basics.text +++ /dev/null @@ -1,306 +0,0 @@ -Markdown: Basics -================ - - - - -Getting the Gist of Markdown's Formatting Syntax ------------------------------------------------- - -This page offers a brief overview of what it's like to use Markdown. -The [syntax page] [s] provides complete, detailed documentation for -every feature, but Markdown should be very easy to pick up simply by -looking at a few examples of it in action. The examples on this page -are written in a before/after style, showing example syntax and the -HTML output produced by Markdown. - -It's also helpful to simply try Markdown out; the [Dingus] [d] is a -web application that allows you type your own Markdown-formatted text -and translate it to XHTML. - -**Note:** This document is itself written using Markdown; you -can [see the source for it by adding '.text' to the URL] [src]. - - [s]: /projects/markdown/syntax "Markdown Syntax" - [d]: /projects/markdown/dingus "Markdown Dingus" - [src]: /projects/markdown/basics.text - - -## Paragraphs, Headers, Blockquotes ## - -A paragraph is simply one or more consecutive lines of text, separated -by one or more blank lines. (A blank line is any line that looks like a -blank line -- a line containing nothing spaces or tabs is considered -blank.) Normal paragraphs should not be intended with spaces or tabs. - -Markdown offers two styles of headers: *Setext* and *atx*. -Setext-style headers for `

` and `

` are created by -"underlining" with equal signs (`=`) and hyphens (`-`), respectively. -To create an atx-style header, you put 1-6 hash marks (`#`) at the -beginning of the line -- the number of hashes equals the resulting -HTML header level. - -Blockquotes are indicated using email-style '`>`' angle brackets. - -Markdown: - - A First Level Header - ==================== - - A Second Level Header - --------------------- - - Now is the time for all good men to come to - the aid of their country. This is just a - regular paragraph. - - The quick brown fox jumped over the lazy - dog's back. - - ### Header 3 - - > This is a blockquote. - > - > This is the second paragraph in the blockquote. - > - > ## This is an H2 in a blockquote - - -Output: - -

A First Level Header

- -

A Second Level Header

- -

Now is the time for all good men to come to - the aid of their country. This is just a - regular paragraph.

- -

The quick brown fox jumped over the lazy - dog's back.

- -

Header 3

- -
-

This is a blockquote.

- -

This is the second paragraph in the blockquote.

- -

This is an H2 in a blockquote

-
- - - -### Phrase Emphasis ### - -Markdown uses asterisks and underscores to indicate spans of emphasis. - -Markdown: - - Some of these words *are emphasized*. - Some of these words _are emphasized also_. - - Use two asterisks for **strong emphasis**. - Or, if you prefer, __use two underscores instead__. - -Output: - -

Some of these words are emphasized. - Some of these words are emphasized also.

- -

Use two asterisks for strong emphasis. - Or, if you prefer, use two underscores instead.

- - - -## Lists ## - -Unordered (bulleted) lists use asterisks, pluses, and hyphens (`*`, -`+`, and `-`) as list markers. These three markers are -interchangable; this: - - * Candy. - * Gum. - * Booze. - -this: - - + Candy. - + Gum. - + Booze. - -and this: - - - Candy. - - Gum. - - Booze. - -all produce the same output: - -
    -
  • Candy.
    • -
  • Gum.
    • -
  • Booze.
    • -
- -Ordered (numbered) lists use regular numbers, followed by periods, as -list markers: - - 1. Red - 2. Green - 3. Blue - -Output: - -
    -
  1. Red
    2. -
  2. Green
    3. -
  3. Blue
    4. -
- -If you put blank lines between items, you'll get `

` tags for the -list item text. You can create multi-paragraph list items by indenting -the paragraphs by 4 spaces or 1 tab: - - * A list item. - - With multiple paragraphs. - - * Another item in the list. - -Output: - -

    -

  • A list item.

    -

    With multiple paragraphs.

    • -

  • Another item in the list.

    • -
- - - -### Links ### - -Markdown supports two styles for creating links: *inline* and -*reference*. With both styles, you use square brackets to delimit the -text you want to turn into a link. - -Inline-style links use parentheses immediately after the link text. -For example: - - This is an [example link](http://example.com/). - -Output: - -

This is an - example link.

- -Optionally, you may include a title attribute in the parentheses: - - This is an [example link](http://example.com/ "With a Title"). - -Output: - -

This is an - example link.

- -Reference-style links allow you to refer to your links by names, which -you define elsewhere in your document: - - I get 10 times more traffic from [Google][1] than from - [Yahoo][2] or [MSN][3]. - - [1]: http://google.com/ "Google" - [2]: http://search.yahoo.com/ "Yahoo Search" - [3]: http://search.msn.com/ "MSN Search" - -Output: - -

I get 10 times more traffic from Google than from Yahoo or MSN.

- -The title attribute is optional. Link names may contain letters, -numbers and spaces, but are *not* case sensitive: - - I start my morning with a cup of coffee and - [The New York Times][NY Times]. - - [ny times]: http://www.nytimes.com/ - -Output: - -

I start my morning with a cup of coffee and - The New York Times.

- - -### Images ### - -Image syntax is very much like link syntax. - -Inline (titles are optional): - - ![alt text](/path/to/img.jpg "Title") - -Reference-style: - - ![alt text][id] - - [id]: /path/to/img.jpg "Title" - -Both of the above examples produce the same output: - - alt text - - - -### Code ### - -In a regular paragraph, you can create code span by wrapping text in -backtick quotes. Any ampersands (`&`) and angle brackets (`<` or -`>`) will automatically be translated into HTML entities. This makes -it easy to use Markdown to write about HTML example code: - - I strongly recommend against using any `` tags. - - I wish SmartyPants used named entities like `—` - instead of decimal-encoded entites like `—`. - -Output: - -

I strongly recommend against using any - <blink> tags.

- -

I wish SmartyPants used named entities like - &mdash; instead of decimal-encoded - entites like &#8212;.

- - -To specify an entire block of pre-formatted code, indent every line of -the block by 4 spaces or 1 tab. Just like with code spans, `&`, `<`, -and `>` characters will be escaped automatically. - -Markdown: - - If you want your page to validate under XHTML 1.0 Strict, - you've got to put paragraph tags in your blockquotes: - -
-

For example.

-
- -Output: - -

If you want your page to validate under XHTML 1.0 Strict, - you've got to put paragraph tags in your blockquotes:

- - 
<blockquote>
-        <p>For example.</p>
-    </blockquote>
-
diff --git a/test/fixtures/input/markdown-documentation-syntax.text b/test/fixtures/input/markdown-documentation-syntax.text deleted file mode 100644 index 8f3dac1c3..000000000 --- a/test/fixtures/input/markdown-documentation-syntax.text +++ /dev/null @@ -1,887 +0,0 @@ -Markdown: Syntax -================ - - - - -* [Overview](#overview) - * [Philosophy](#philosophy) - * [Inline HTML](#html) - * [Automatic Escaping for Special Characters](#autoescape) -* [Block Elements](#block) - * [Paragraphs and Line Breaks](#p) - * [Headers](#header) - * [Blockquotes](#blockquote) - * [Lists](#list) - * [Code Blocks](#precode) - * [Horizontal Rules](#hr) -* [Span Elements](#span) - * [Links](#link) - * [Emphasis](#em) - * [Code](#code) - * [Images](#img) -* [Miscellaneous](#misc) - * [Backslash Escapes](#backslash) - * [Automatic Links](#autolink) - - -**Note:** This document is itself written using Markdown; you -can [see the source for it by adding '.text' to the URL][src]. - - [src]: /projects/markdown/syntax.text - -* * * - -

Overview

- -

Philosophy

- -Markdown is intended to be as easy-to-read and easy-to-write as is feasible. - -Readability, however, is emphasized above all else. A Markdown-formatted -document should be publishable as-is, as plain text, without looking -like it's been marked up with tags or formatting instructions. While -Markdown's syntax has been influenced by several existing text-to-HTML -filters -- including [Setext] [1], [atx] [2], [Textile] [3], [reStructuredText] [4], -[Grutatext] [5], and [EtText] [6] -- the single biggest source of -inspiration for Markdown's syntax is the format of plain text email. - - [1]: http://docutils.sourceforge.net/mirror/setext.html - [2]: http://www.aaronsw.com/2002/atx/ - [3]: http://textism.com/tools/textile/ - [4]: http://docutils.sourceforge.net/rst.html - [5]: http://www.triptico.com/software/grutatxt.html - [6]: http://ettext.taint.org/doc/ - -To this end, Markdown's syntax is comprised entirely of punctuation -characters, which punctuation characters have been carefully chosen so -as to look like what they mean. E.g., asterisks around a word actually -look like \*emphasis\*. Markdown lists look like, well, lists. Even -blockquotes look like quoted passages of text, assuming you've ever -used email. - - - -

Inline HTML

- -Markdown's syntax is intended for one purpose: to be used as a -format for *writing* for the web. - -Markdown is not a replacement for HTML, or even close to it. Its -syntax is very small, corresponding only to a very small subset of -HTML tags. The idea is *not* to create a syntax that makes it easier -to insert HTML tags. In my opinion, HTML tags are already easy to -insert. The idea for Markdown is to make it easy to read, write, and -edit prose. HTML is a *publishing* format; Markdown is a *writing* -format. Thus, Markdown's formatting syntax only addresses issues that -can be conveyed in plain text. - -For any markup that is not covered by Markdown's syntax, you simply -use HTML itself. There's no need to preface it or delimit it to -indicate that you're switching from Markdown to HTML; you just use -the tags. - -The only restrictions are that block-level HTML elements -- e.g. `
`, -``, `
`, `
`, etc. -- must be separated from surrounding
-content by blank lines, and the start and end tags of the block should
-not be indented with tabs or spaces. Markdown is smart enough not
-to add extra (unwanted) `
` tags around HTML block-level tags.
-
-For example, to add an HTML table to a Markdown article:
-
-    This is a regular paragraph.
-
-
- - - -
Foo
- - This is another regular paragraph. - -Note that Markdown formatting syntax is not processed within block-level -HTML tags. E.g., you can't use Markdown-style `*emphasis*` inside an -HTML block. - -Span-level HTML tags -- e.g. ``, ``, or `` -- can be -used anywhere in a Markdown paragraph, list item, or header. If you -want, you can even use HTML tags instead of Markdown formatting; e.g. if -you'd prefer to use HTML `` or `` tags instead of Markdown's -link or image syntax, go right ahead. - -Unlike block-level HTML tags, Markdown syntax *is* processed within -span-level tags. - - -

Automatic Escaping for Special Characters

- -In HTML, there are two characters that demand special treatment: `<` -and `&`. Left angle brackets are used to start tags; ampersands are -used to denote HTML entities. If you want to use them as literal -characters, you must escape them as entities, e.g. `<`, and -`&`. - -Ampersands in particular are bedeviling for web writers. If you want to -write about 'AT&T', you need to write '`AT&T`'. You even need to -escape ampersands within URLs. Thus, if you want to link to: - - http://images.google.com/images?num=30&q=larry+bird - -you need to encode the URL as: - - http://images.google.com/images?num=30&q=larry+bird - -in your anchor tag `href` attribute. Needless to say, this is easy to -forget, and is probably the single most common source of HTML validation -errors in otherwise well-marked-up web sites. - -Markdown allows you to use these characters naturally, taking care of -all the necessary escaping for you. If you use an ampersand as part of -an HTML entity, it remains unchanged; otherwise it will be translated -into `&`. - -So, if you want to include a copyright symbol in your article, you can write: - - © - -and Markdown will leave it alone. But if you write: - - AT&T - -Markdown will translate it to: - - AT&T - -Similarly, because Markdown supports [inline HTML](#html), if you use -angle brackets as delimiters for HTML tags, Markdown will treat them as -such. But if you write: - - 4 < 5 - -Markdown will translate it to: - - 4 < 5 - -However, inside Markdown code spans and blocks, angle brackets and -ampersands are *always* encoded automatically. This makes it easy to use -Markdown to write about HTML code. (As opposed to raw HTML, which is a -terrible format for writing about HTML syntax, because every single `<` -and `&` in your example code needs to be escaped.) - - -* * * - - -

Block Elements

- -

Paragraphs and Line Breaks

- -A paragraph is simply one or more consecutive lines of text, separated -by one or more blank lines. (A blank line is any line that looks like a -blank line -- a line containing nothing but spaces or tabs is considered -blank.) Normal paragraphs should not be intended with spaces or tabs. - -The implication of the "one or more consecutive lines of text" rule is -that Markdown supports "hard-wrapped" text paragraphs. This differs -significantly from most other text-to-HTML formatters (including Movable -Type's "Convert Line Breaks" option) which translate every line break -character in a paragraph into a `
` tag. - -When you *do* want to insert a `
` break tag using Markdown, you -end a line with two or more spaces, then type return. - -Yes, this takes a tad more effort to create a `
`, but a simplistic -"every line break is a `
`" rule wouldn't work for Markdown. -Markdown's email-style [blockquoting][bq] and multi-paragraph [list items][l] -work best -- and look better -- when you format them with hard breaks. - - [bq]: #blockquote - [l]: #list - - - - - -Markdown supports two styles of headers, [Setext] [1] and [atx] [2]. - -Setext-style headers are "underlined" using equal signs (for first-level -headers) and dashes (for second-level headers). For example: - - This is an H1 - ============= - - This is an H2 - ------------- - -Any number of underlining `=`'s or `-`'s will work. - -Atx-style headers use 1-6 hash characters at the start of the line, -corresponding to header levels 1-6. For example: - - # This is an H1 - - ## This is an H2 - - ###### This is an H6 - -Optionally, you may "close" atx-style headers. This is purely -cosmetic -- you can use this if you think it looks better. The -closing hashes don't even need to match the number of hashes -used to open the header. (The number of opening hashes -determines the header level.) : - - # This is an H1 # - - ## This is an H2 ## - - ### This is an H3 ###### - - -

Blockquotes

- -Markdown uses email-style `>` characters for blockquoting. If you're -familiar with quoting passages of text in an email message, then you -know how to create a blockquote in Markdown. It looks best if you hard -wrap the text and put a `>` before every line: - - > This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet, - > consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus. - > Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus. - > - > Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse - > id sem consectetuer libero luctus adipiscing. - -Markdown allows you to be lazy and only put the `>` before the first -line of a hard-wrapped paragraph: - - > This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet, - consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus. - Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus. - - > Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse - id sem consectetuer libero luctus adipiscing. - -Blockquotes can be nested (i.e. a blockquote-in-a-blockquote) by -adding additional levels of `>`: - - > This is the first level of quoting. - > - > > This is nested blockquote. - > - > Back to the first level. - -Blockquotes can contain other Markdown elements, including headers, lists, -and code blocks: - - > ## This is a header. - > - > 1. This is the first list item. - > 2. This is the second list item. - > - > Here's some example code: - > - > return shell_exec("echo $input | $markdown_script"); - -Any decent text editor should make email-style quoting easy. For -example, with BBEdit, you can make a selection and choose Increase -Quote Level from the Text menu. - - -

Lists

- -Markdown supports ordered (numbered) and unordered (bulleted) lists. - -Unordered lists use asterisks, pluses, and hyphens -- interchangably --- as list markers: - - * Red - * Green - * Blue - -is equivalent to: - - + Red - + Green - + Blue - -and: - - - Red - - Green - - Blue - -Ordered lists use numbers followed by periods: - - 1. Bird - 2. McHale - 3. Parish - -It's important to note that the actual numbers you use to mark the -list have no effect on the HTML output Markdown produces. The HTML -Markdown produces from the above list is: - -
    -
  1. Bird
    2. -
  2. McHale
    3. -
  3. Parish
    4. -
- -If you instead wrote the list in Markdown like this: - - 1. Bird - 1. McHale - 1. Parish - -or even: - - 3. Bird - 1. McHale - 8. Parish - -you'd get the exact same HTML output. The point is, if you want to, -you can use ordinal numbers in your ordered Markdown lists, so that -the numbers in your source match the numbers in your published HTML. -But if you want to be lazy, you don't have to. - -If you do use lazy list numbering, however, you should still start the -list with the number 1. At some point in the future, Markdown may support -starting ordered lists at an arbitrary number. - -List markers typically start at the left margin, but may be indented by -up to three spaces. List markers must be followed by one or more spaces -or a tab. - -To make lists look nice, you can wrap items with hanging indents: - - * Lorem ipsum dolor sit amet, consectetuer adipiscing elit. - Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi, - viverra nec, fringilla in, laoreet vitae, risus. - * Donec sit amet nisl. Aliquam semper ipsum sit amet velit. - Suspendisse id sem consectetuer libero luctus adipiscing. - -But if you want to be lazy, you don't have to: - - * Lorem ipsum dolor sit amet, consectetuer adipiscing elit. - Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi, - viverra nec, fringilla in, laoreet vitae, risus. - * Donec sit amet nisl. Aliquam semper ipsum sit amet velit. - Suspendisse id sem consectetuer libero luctus adipiscing. - -If list items are separated by blank lines, Markdown will wrap the -items in `

` tags in the HTML output. For example, this input: - - * Bird - * Magic - -will turn into: - -

    -
  • Bird
    • -
  • Magic
    • -
- -But this: - - * Bird - - * Magic - -will turn into: - -
    -

  • Bird

    • -

  • Magic

    • -
- -List items may consist of multiple paragraphs. Each subsequent -paragraph in a list item must be intended by either 4 spaces -or one tab: - - 1. This is a list item with two paragraphs. Lorem ipsum dolor - sit amet, consectetuer adipiscing elit. Aliquam hendrerit - mi posuere lectus. - - Vestibulum enim wisi, viverra nec, fringilla in, laoreet - vitae, risus. Donec sit amet nisl. Aliquam semper ipsum - sit amet velit. - - 2. Suspendisse id sem consectetuer libero luctus adipiscing. - -It looks nice if you indent every line of the subsequent -paragraphs, but here again, Markdown will allow you to be -lazy: - - * This is a list item with two paragraphs. - - This is the second paragraph in the list item. You're - only required to indent the first line. Lorem ipsum dolor - sit amet, consectetuer adipiscing elit. - - * Another item in the same list. - -To put a blockquote within a list item, the blockquote's `>` -delimiters need to be indented: - - * A list item with a blockquote: - - > This is a blockquote - > inside a list item. - -To put a code block within a list item, the code block needs -to be indented *twice* -- 8 spaces or two tabs: - - * A list item with a code block: - - - - -It's worth noting that it's possible to trigger an ordered list by -accident, by writing something like this: - - 1986. What a great season. - -In other words, a *number-period-space* sequence at the beginning of a -line. To avoid this, you can backslash-escape the period: - - 1986\. What a great season. - - - -

Code Blocks

- -Pre-formatted code blocks are used for writing about programming or -markup source code. Rather than forming normal paragraphs, the lines -of a code block are interpreted literally. Markdown wraps a code block -in both `
` and `` tags.
-
-To produce a code block in Markdown, simply indent every line of the
-block by at least 4 spaces or 1 tab. For example, given this input:
-
-    This is a normal paragraph:
-
-        This is a code block.
-
-Markdown will generate:
-
-    
This is a normal paragraph:

-
-    
This is a code block.
-    

-
-One level of indentation -- 4 spaces or 1 tab -- is removed from each
-line of the code block. For example, this:
-
-    Here is an example of AppleScript:
-
-        tell application "Foo"
-            beep
-        end tell
-
-will turn into:
-
-    
Here is an example of AppleScript:

-
-    
tell application "Foo"
-        beep
-    end tell
-    

-
-A code block continues until it reaches a line that is not indented
-(or the end of the article).
-
-Within a code block, ampersands (`&`) and angle brackets (`<` and `>`)
-are automatically converted into HTML entities. This makes it very
-easy to include example HTML source code using Markdown -- just paste
-it and indent it, and Markdown will handle the hassle of encoding the
-ampersands and angle brackets. For example, this:
-
-        

-            © 2004 Foo Corporation
-        

-
-will turn into:
-
-    
<div class="footer">
-        &copy; 2004 Foo Corporation
-    </div>
-    

-
-Regular Markdown syntax is not processed within code blocks. E.g.,
-asterisks are just literal asterisks within a code block. This means
-it's also easy to use Markdown to write about Markdown's own syntax.
-
-
-
-
Horizontal Rules

-
-You can produce a horizontal rule tag (`
`) by placing three or
-more hyphens, asterisks, or underscores on a line by themselves. If you
-wish, you may use spaces between the hyphens or asterisks. Each of the
-following lines will produce a horizontal rule:
-
-    * * *
-
-    ***
-
-    *****
-	
-    - - -
-
-    ---------------------------------------
-
-	_ _ _
-
-
-* * *
-
-
Span Elements

-
-
-
-Markdown supports two style of links: *inline* and *reference*.
-
-In both styles, the link text is delimited by [square brackets].
-
-To create an inline link, use a set of regular parentheses immediately
-after the link text's closing square bracket. Inside the parentheses,
-put the URL where you want the link to point, along with an *optional*
-title for the link, surrounded in quotes. For example:
-
-    This is [an example](http://example.com/ "Title") inline link.
-
-    [This link](http://example.net/) has no title attribute.
-
-Will produce:
-
-    
This is 
-    an example inline link.

-
-    
This link has no
-    title attribute.

-
-If you're referring to a local resource on the same server, you can
-use relative paths:
-
-    See my [About](/about/) page for details.
-
-Reference-style links use a second set of square brackets, inside
-which you place a label of your choosing to identify the link:
-
-    This is [an example][id] reference-style link.
-
-You can optionally use a space to separate the sets of brackets:
-
-    This is [an example] [id] reference-style link.
-
-Then, anywhere in the document, you define your link label like this,
-on a line by itself:
-
-    [id]: http://example.com/  "Optional Title Here"
-
-That is:
-
-*   Square brackets containing the link identifier (optionally
-    indented from the left margin using up to three spaces);
-*   followed by a colon;
-*   followed by one or more spaces (or tabs);
-*   followed by the URL for the link;
-*   optionally followed by a title attribute for the link, enclosed
-    in double or single quotes.
-
-The link URL may, optionally, be surrounded by angle brackets:
-
-    [id]:   "Optional Title Here"
-
-You can put the title attribute on the next line and use extra spaces
-or tabs for padding, which tends to look better with longer URLs:
-
-    [id]: http://example.com/longish/path/to/resource/here
-        "Optional Title Here"
-
-Link definitions are only used for creating links during Markdown
-processing, and are stripped from your document in the HTML output.
-
-Link definition names may constist of letters, numbers, spaces, and punctuation -- but they are *not* case sensitive. E.g. these two links:
-
-	[link text][a]
-	[link text][A]
-
-are equivalent.
-
-The *implicit link name* shortcut allows you to omit the name of the
-link, in which case the link text itself is used as the name.
-Just use an empty set of square brackets -- e.g., to link the word
-"Google" to the google.com web site, you could simply write:
-
-	[Google][]
-
-And then define the link:
-
-	[Google]: http://google.com/
-
-Because link names may contain spaces, this shortcut even works for
-multiple words in the link text:
-
-	Visit [Daring Fireball][] for more information.
-
-And then define the link:
-	
-	[Daring Fireball]: http://daringfireball.net/
-
-Link definitions can be placed anywhere in your Markdown document. I
-tend to put them immediately after each paragraph in which they're
-used, but if you want, you can put them all at the end of your
-document, sort of like footnotes.
-
-Here's an example of reference links in action:
-
-    I get 10 times more traffic from [Google] [1] than from
-    [Yahoo] [2] or [MSN] [3].
-
-      [1]: http://google.com/        "Google"
-      [2]: http://search.yahoo.com/  "Yahoo Search"
-      [3]: http://search.msn.com/    "MSN Search"
-
-Using the implicit link name shortcut, you could instead write:
-
-    I get 10 times more traffic from [Google][] than from
-    [Yahoo][] or [MSN][].
-
-      [google]: http://google.com/        "Google"
-      [yahoo]:  http://search.yahoo.com/  "Yahoo Search"
-      [msn]:    http://search.msn.com/    "MSN Search"
-
-Both of the above examples will produce the following HTML output:
-
-    
I get 10 times more traffic from Google than from
-    Yahoo
-    or MSN.

-
-For comparison, here is the same paragraph written using
-Markdown's inline link style:
-
-    I get 10 times more traffic from [Google](http://google.com/ "Google")
-    than from [Yahoo](http://search.yahoo.com/ "Yahoo Search") or
-    [MSN](http://search.msn.com/ "MSN Search").
-
-The point of reference-style links is not that they're easier to
-write. The point is that with reference-style links, your document
-source is vastly more readable. Compare the above examples: using
-reference-style links, the paragraph itself is only 81 characters
-long; with inline-style links, it's 176 characters; and as raw HTML,
-it's 234 characters. In the raw HTML, there's more markup than there
-is text.
-
-With Markdown's reference-style links, a source document much more
-closely resembles the final output, as rendered in a browser. By
-allowing you to move the markup-related metadata out of the paragraph,
-you can add links without interrupting the narrative flow of your
-prose.
-
-
-
Emphasis

-
-Markdown treats asterisks (`*`) and underscores (`_`) as indicators of
-emphasis. Text wrapped with one `*` or `_` will be wrapped with an
-HTML `` tag; double `*`'s or `_`'s will be wrapped with an HTML
-`` tag. E.g., this input:
-
-    *single asterisks*
-
-    _single underscores_
-
-    **double asterisks**
-
-    __double underscores__
-
-will produce:
-
-    single asterisks
-
-    single underscores
-
-    double asterisks
-
-    double underscores
-
-You can use whichever style you prefer; the lone restriction is that
-the same character must be used to open and close an emphasis span.
-
-Emphasis can be used in the middle of a word:
-
-    un*fucking*believable
-
-But if you surround an `*` or `_` with spaces, it'll be treated as a
-literal asterisk or underscore.
-
-To produce a literal asterisk or underscore at a position where it
-would otherwise be used as an emphasis delimiter, you can backslash
-escape it:
-
-    \*this text is surrounded by literal asterisks\*
-
-
-
-
Code

-
-To indicate a span of code, wrap it with backtick quotes (`` ` ``).
-Unlike a pre-formatted code block, a code span indicates code within a
-normal paragraph. For example:
-
-    Use the `printf()` function.
-
-will produce:
-
-    
Use the printf() function.

-
-To include a literal backtick character within a code span, you can use
-multiple backticks as the opening and closing delimiters:
-
-    ``There is a literal backtick (`) here.``
-
-which will produce this:
-
-    
There is a literal backtick (`) here.

-
-The backtick delimiters surrounding a code span may include spaces --
-one after the opening, one before the closing. This allows you to place
-literal backtick characters at the beginning or end of a code span:
-
-	A single backtick in a code span: `` ` ``
-	
-	A backtick-delimited string in a code span: `` `foo` ``
-
-will produce:
-
-	
A single backtick in a code span: `

-	
-	
A backtick-delimited string in a code span: `foo`

-
-With a code span, ampersands and angle brackets are encoded as HTML
-entities automatically, which makes it easy to include example HTML
-tags. Markdown will turn this:
-
-    Please don't use any `` tags.
-
-into:
-
-    
Please don't use any <blink> tags.

-
-You can write this:
-
-    `—` is the decimal-encoded equivalent of `—`.
-
-to produce:
-
-    
&#8212; is the decimal-encoded
-    equivalent of &mdash;.

-
-
-
-
Images

-
-Admittedly, it's fairly difficult to devise a "natural" syntax for
-placing images into a plain text document format.
-
-Markdown uses an image syntax that is intended to resemble the syntax
-for links, allowing for two styles: *inline* and *reference*.
-
-Inline image syntax looks like this:
-
-    ![Alt text](/path/to/img.jpg)
-
-    ![Alt text](/path/to/img.jpg "Optional title")
-
-That is:
-
-*   An exclamation mark: `!`;
-*   followed by a set of square brackets, containing the `alt`
-    attribute text for the image;
-*   followed by a set of parentheses, containing the URL or path to
-    the image, and an optional `title` attribute enclosed in double
-    or single quotes.
-
-Reference-style image syntax looks like this:
-
-    ![Alt text][id]
-
-Where "id" is the name of a defined image reference. Image references
-are defined using syntax identical to link references:
-
-    [id]: url/to/image  "Optional title attribute"
-
-As of this writing, Markdown has no syntax for specifying the
-dimensions of an image; if this is important to you, you can simply
-use regular HTML `` tags.
-
-
-* * *
-
-
-
Miscellaneous

-
-
-
-Markdown supports a shortcut style for creating "automatic" links for URLs and email addresses: simply surround the URL or email address with angle brackets. What this means is that if you want to show the actual text of a URL or email address, and also have it be a clickable link, you can do this:
-
-    
-    
-Markdown will turn this into:
-
-    http://example.com/
-
-Automatic links for email addresses work similarly, except that
-Markdown will also perform a bit of randomized decimal and hex
-entity-encoding to help obscure your address from address-harvesting
-spambots. For example, Markdown will turn this:
-
-    
-
-into something like this:
-
-    address@exa
-    mple.com
-
-which will render in a browser as a clickable link to "address@example.com".
-
-(This sort of entity-encoding trick will indeed fool many, if not
-most, address-harvesting bots, but it definitely won't fool all of
-them. It's better than nothing, but an address published in this way
-will probably eventually start receiving spam.)
-
-
-
-
Backslash Escapes

-
-Markdown allows you to use backslash escapes to generate literal
-characters which would otherwise have special meaning in Markdown's
-formatting syntax. For example, if you wanted to surround a word with
-literal asterisks (instead of an HTML `` tag), you can backslashes
-before the asterisks, like this:
-
-    \*literal asterisks\*
-
-Markdown provides backslash escapes for the following characters:
-
-    \   backslash
-    `   backtick
-    *   asterisk
-    _   underscore
-    {}  curly braces
-    []  square brackets
-    ()  parentheses
-    #   hash mark
-	+	plus sign
-	-	minus sign (hyphen)
-    .   dot
-    !   exclamation mark
-
diff --git a/test/fixtures/input/mixed-indentation.text b/test/fixtures/input/mixed-indentation.text
deleted file mode 100644
index 3808a8426..000000000
--- a/test/fixtures/input/mixed-indentation.text
+++ /dev/null
@@ -1,13 +0,0 @@
-# Mixed spaces and tabs
-
-- Very long
-		paragraph
-
-1. Very long
-		paragraph
-
--	Very long
-		paragraph
-
-1.	Very long
-		paragraph
diff --git a/test/fixtures/input/nested-blockquotes.text b/test/fixtures/input/nested-blockquotes.text
deleted file mode 100644
index ed3c624ff..000000000
--- a/test/fixtures/input/nested-blockquotes.text
+++ /dev/null
@@ -1,5 +0,0 @@
-> foo
->
-> > bar
->
-> foo
diff --git a/test/fixtures/input/nested-code.text b/test/fixtures/input/nested-code.text
deleted file mode 100644
index 9293ad0f0..000000000
--- a/test/fixtures/input/nested-code.text
+++ /dev/null
@@ -1,3 +0,0 @@
-````` hi ther `` ok ``` `````
-
-`` `hi ther` ``
diff --git a/test/fixtures/input/nested-em.nooutput.text b/test/fixtures/input/nested-em.nooutput.text
deleted file mode 100644
index 550d0eb99..000000000
--- a/test/fixtures/input/nested-em.nooutput.text
+++ /dev/null
@@ -1,3 +0,0 @@
-*test **test** test*
-
-_test __test__ test_
diff --git a/test/fixtures/input/nested-references.text b/test/fixtures/input/nested-references.text
deleted file mode 100644
index 90ef97afe..000000000
--- a/test/fixtures/input/nested-references.text
+++ /dev/null
@@ -1,10 +0,0 @@
-This nested image should work:
-
-[![Foo][bar]][baz]
-
-This nested link should not work:
-
-[[Foo][bar]][baz]
-
-[bar]: https://bar.com "bar"
-[baz]: https://baz.com "baz"
diff --git a/test/fixtures/input/nested-square-link.text b/test/fixtures/input/nested-square-link.text
deleted file mode 100644
index 76a74c0fb..000000000
--- a/test/fixtures/input/nested-square-link.text
+++ /dev/null
@@ -1,7 +0,0 @@
-[the `]` character](/url)
-
-[the `` [ `` character](/url)
-
-[the `` [ ``` character](/url)
-
-[the `` ` `` character](/url)
diff --git a/test/fixtures/input/not-a-link.text b/test/fixtures/input/not-a-link.text
deleted file mode 100644
index 26f60437d..000000000
--- a/test/fixtures/input/not-a-link.text
+++ /dev/null
@@ -1 +0,0 @@
-\[test](not a link)
diff --git a/test/fixtures/input/ordered-and-unordered-lists.text b/test/fixtures/input/ordered-and-unordered-lists.text
deleted file mode 100644
index 7f3b49777..000000000
--- a/test/fixtures/input/ordered-and-unordered-lists.text
+++ /dev/null
@@ -1,131 +0,0 @@
-## Unordered
-
-Asterisks tight:
-
-*	asterisk 1
-*	asterisk 2
-*	asterisk 3
-
-
-Asterisks loose:
-
-*	asterisk 1
-
-*	asterisk 2
-
-*	asterisk 3
-
-* * *
-
-Pluses tight:
-
-+	Plus 1
-+	Plus 2
-+	Plus 3
-
-
-Pluses loose:
-
-+	Plus 1
-
-+	Plus 2
-
-+	Plus 3
-
-* * *
-
-
-Minuses tight:
-
--	Minus 1
--	Minus 2
--	Minus 3
-
-
-Minuses loose:
-
--	Minus 1
-
--	Minus 2
-
--	Minus 3
-
-
-## Ordered
-
-Tight:
-
-1.	First
-2.	Second
-3.	Third
-
-and:
-
-1. One
-2. Two
-3. Three
-
-
-Loose using tabs:
-
-1.	First
-
-2.	Second
-
-3.	Third
-
-and using spaces:
-
-1. One
-
-2. Two
-
-3. Three
-
-Multiple paragraphs:
-
-1.	Item 1, graf one.
-
-	Item 2. graf two. The quick brown fox jumped over the lazy dog's
-	back.
-	
-2.	Item 2.
-
-3.	Item 3.
-
-
-
-## Nested
-
-*	Tab
-	*	Tab
-		*	Tab
-
-Here's another:
-
-1. First
-2. Second:
-	* Fee
-	* Fie
-	* Foe
-3. Third
-
-Same thing but with paragraphs:
-
-1. First
-
-2. Second:
-	* Fee
-	* Fie
-	* Foe
-
-3. Third
-
-
-This was an error in Markdown 1.0.1:
-
-*	this
-
-	*	sub
-
-	that
diff --git a/test/fixtures/input/ordered-different-types.nooutput.text b/test/fixtures/input/ordered-different-types.nooutput.text
deleted file mode 100644
index db513d8ba..000000000
--- a/test/fixtures/input/ordered-different-types.nooutput.text
+++ /dev/null
@@ -1,3 +0,0 @@
-1. foo
-2. bar
-3) baz
diff --git a/test/fixtures/input/ordered-with-parentheses.text b/test/fixtures/input/ordered-with-parentheses.text
deleted file mode 100644
index abed47796..000000000
--- a/test/fixtures/input/ordered-with-parentheses.text
+++ /dev/null
@@ -1,40 +0,0 @@
-## Ordered
-
-Tight:
-
-1)	First
-2)	Second
-3)	Third
-
-and:
-
-1) One
-2) Two
-3) Three
-
-Loose using tabs:
-
-1)	First
-
-2)	Second
-
-3)	Third
-
-and using spaces:
-
-1) One
-
-2) Two
-
-3) Three
-
-Multiple paragraphs:
-
-1)	Item 1, graf one.
-
-	Item 2. graf two. The quick brown fox jumped over the lazy dog's
-	back.
-	
-2)	Item 2.
-
-3)	Item 3.
diff --git a/test/fixtures/input/paragraphs-and-indentation.text b/test/fixtures/input/paragraphs-and-indentation.text
deleted file mode 100644
index 81d9cb394..000000000
--- a/test/fixtures/input/paragraphs-and-indentation.text
+++ /dev/null
@@ -1,36 +0,0 @@
-# Without lines.
-
-This is a paragraph
-    and this is further text
-
-This is a paragraph
-   and this is further text
-
-This is a paragraph
-    
-and this is a new paragraph
-
-This is a paragraph with some asterisks
-    ***
-
-This is a paragraph followed by a horizontal rule
-   ***
-
-# With lines.
-
-This is a paragraph
-
-    and this is code
-
-This is a paragraph
-
-   and this is a new paragraph
-
-This is a paragraph with some asterisks in a code block
-
-    ***
-
-This is a paragraph followed by a horizontal rule
-
-   ***
-
diff --git a/test/fixtures/input/paragraphs-empty.text b/test/fixtures/input/paragraphs-empty.text
deleted file mode 100644
index a409646fc..000000000
--- a/test/fixtures/input/paragraphs-empty.text
+++ /dev/null
@@ -1,12 +0,0 @@
-  
-
-aaa
-  
-
-# aaa
-
-  
-
-bbb
-  
-ccc
\ No newline at end of file
diff --git a/test/fixtures/input/ref-paren.text b/test/fixtures/input/ref-paren.text
deleted file mode 100644
index aa97c91ae..000000000
--- a/test/fixtures/input/ref-paren.text
+++ /dev/null
@@ -1,3 +0,0 @@
-[hi]
-
-[hi]: /url (there)
diff --git a/test/fixtures/input/reference-image-empty-alt.text b/test/fixtures/input/reference-image-empty-alt.text
deleted file mode 100644
index 806cd2c64..000000000
--- a/test/fixtures/input/reference-image-empty-alt.text
+++ /dev/null
@@ -1,3 +0,0 @@
-![][1]
-
-[1]: /xyz.png
diff --git a/test/fixtures/input/reference-link-escape.nooutput.text b/test/fixtures/input/reference-link-escape.nooutput.text
deleted file mode 100644
index 837cad417..000000000
--- a/test/fixtures/input/reference-link-escape.nooutput.text
+++ /dev/null
@@ -1,5 +0,0 @@
-[a][b\*r*], [b\*r*][], [b\*r*].
-
-![foo][b\*r*], ![b\*r*][], ![b\*r*].
-
-[b\*r*]: http://google.com
diff --git a/test/fixtures/input/reference-link-not-closed.text b/test/fixtures/input/reference-link-not-closed.text
deleted file mode 100644
index 143332dd7..000000000
--- a/test/fixtures/input/reference-link-not-closed.text
+++ /dev/null
@@ -1,5 +0,0 @@
-[bar][bar
-
-[bar][
-
-[bar]
diff --git a/test/fixtures/input/reference-link-with-angle-brackets.text b/test/fixtures/input/reference-link-with-angle-brackets.text
deleted file mode 100644
index 95e2435f9..000000000
--- a/test/fixtures/input/reference-link-with-angle-brackets.text
+++ /dev/null
@@ -1,3 +0,0 @@
-[foo]
-
-[foo]: <./url with spaces>
diff --git a/test/fixtures/input/reference-link-with-multiple-definitions.text b/test/fixtures/input/reference-link-with-multiple-definitions.text
deleted file mode 100644
index 04c90513a..000000000
--- a/test/fixtures/input/reference-link-with-multiple-definitions.text
+++ /dev/null
@@ -1,4 +0,0 @@
-[foo]
-
-[foo]: first
-[foo]: second
diff --git a/test/fixtures/input/remarkjs-remark-lint-gh-111.text b/test/fixtures/input/remarkjs-remark-lint-gh-111.text
deleted file mode 100644
index 7b35a8aa8..000000000
--- a/test/fixtures/input/remarkjs-remark-lint-gh-111.text
+++ /dev/null
@@ -1,8 +0,0 @@
-1. **Fork**
-2. **Clone**
-
-        git clone 
-3. **Configure remotes**
-
-        cd 
-        git remote add upstream 
diff --git a/test/fixtures/input/same-bullet.nooutput.text b/test/fixtures/input/same-bullet.nooutput.text
deleted file mode 100644
index 27a89675a..000000000
--- a/test/fixtures/input/same-bullet.nooutput.text
+++ /dev/null
@@ -1,3 +0,0 @@
-* test
-+ test
-- test
diff --git a/test/fixtures/input/stringify-escape.text b/test/fixtures/input/stringify-escape.text
deleted file mode 100644
index 22dcd79d7..000000000
--- a/test/fixtures/input/stringify-escape.text
+++ /dev/null
@@ -1,87 +0,0 @@
-Characters that should be escaped in general:
-
-\\ \` \* \[
-
-Characters that shouldn't:
-
-{}]()#+-.!>"$%',/:;=?@^~
-
-Underscores are \_escaped\_ unless they appear in_the_middle_of_a_word.
-or **_here**, or here__
-
-Ampersands are escaped only when they would otherwise start an entity:
-
--   \©cat \& \&
--   &copycat &amp; &#x26
--   But: ©cat; `≬` &foo; & AT&T &c
-
-Open parenthesis should be escaped after a shortcut reference:
-
-[ref]\(text)
-
-And after a shortcut reference and a space (for GitHub):
-
-[ref] \(text)
-
-Hyphen should be escaped at the beginning of a line:
-
-\- not a list item
-\- not a list item
-  \+ not a list item
-
-Same for angle brackets:
-
-\> not a block quote
-
-And hash signs:
-
-\# not a heading
-  \## not a subheading
-
-Text under a shortcut reference should be preserved verbatim:
-
--   [two*three]
--   [two\*three]
--   [a\a]
--   [a\\a]
--   [a\\\a]
--   [a_a\_a]
-
-**GFM:**
-
-Colon should be escaped in URLs:
-
--   http\://user:password@host:port/path?key=value#fragment
--   https\://user:password@host:port/path?key=value#fragment
--   http://user:password@host:port/path?key=value#fragment
--   https://user:password@host:port/path?key=value#fragment
-
-Double tildes should be \~~escaped\~~.
-And here: foo~~.
-
-Pipes should not be escaped here: |
-
-| here   | they     |
-| ------ | -------- |
-| should | tho\|ugh |
-
-And here:
-
-| here   | they   |
-\| ---- \| ----- \|
-| should | though |
-
-And here:
-
-here   | they
-\---- \| ------
-should | though
-
-**Commonmark:**
-
-Open angle bracket should be escaped:
-
--   \
\

--   \
--   <div></div>
--   <http:google.com>
diff --git a/test/fixtures/input/strong-and-em-together-one.text b/test/fixtures/input/strong-and-em-together-one.text
deleted file mode 100644
index 95ee690db..000000000
--- a/test/fixtures/input/strong-and-em-together-one.text
+++ /dev/null
@@ -1,7 +0,0 @@
-***This is strong and em.***
-
-So is ***this*** word.
-
-___This is strong and em.___
-
-So is ___this___ word.
diff --git a/test/fixtures/input/strong-and-em-together-two.nooutput.text b/test/fixtures/input/strong-and-em-together-two.nooutput.text
deleted file mode 100644
index 28ab9e45e..000000000
--- a/test/fixtures/input/strong-and-em-together-two.nooutput.text
+++ /dev/null
@@ -1,7 +0,0 @@
-perform_complicated_task
-
-do_this_and_do_that_and_another_thing
-
-perform*complicated*task
-
-do*this*and*do*that*and*another*thing
diff --git a/test/fixtures/input/strong-emphasis.text b/test/fixtures/input/strong-emphasis.text
deleted file mode 100644
index f72a5df63..000000000
--- a/test/fixtures/input/strong-emphasis.text
+++ /dev/null
@@ -1,3 +0,0 @@
-Foo **bar** __baz__.
-
-Foo __bar__ **baz**.
\ No newline at end of file
diff --git a/test/fixtures/input/strong-initial-white-space.text b/test/fixtures/input/strong-initial-white-space.text
deleted file mode 100644
index 45e6c9eab..000000000
--- a/test/fixtures/input/strong-initial-white-space.text
+++ /dev/null
@@ -1,4 +0,0 @@
-** bar **.
-
-
-__ bar __.
\ No newline at end of file
diff --git a/test/fixtures/input/tabs-and-spaces.text b/test/fixtures/input/tabs-and-spaces.text
deleted file mode 100644
index 589d1136e..000000000
--- a/test/fixtures/input/tabs-and-spaces.text
+++ /dev/null
@@ -1,21 +0,0 @@
-+	this is a list item
-	indented with tabs
-
-+   this is a list item
-    indented with spaces
-
-Code:
-
-	this code block is indented by one tab
-
-And:
-
-		this code block is indented by two tabs
-
-And:
-
-	+	this is an example list item
-		indented with tabs
-	
-	+   this is an example list item
-	    indented with spaces
diff --git a/test/fixtures/input/tabs.text b/test/fixtures/input/tabs.text
deleted file mode 100644
index 589d1136e..000000000
--- a/test/fixtures/input/tabs.text
+++ /dev/null
@@ -1,21 +0,0 @@
-+	this is a list item
-	indented with tabs
-
-+   this is a list item
-    indented with spaces
-
-Code:
-
-	this code block is indented by one tab
-
-And:
-
-		this code block is indented by two tabs
-
-And:
-
-	+	this is an example list item
-		indented with tabs
-	
-	+   this is an example list item
-	    indented with spaces
diff --git a/test/fixtures/input/tidyness.text b/test/fixtures/input/tidyness.text
deleted file mode 100644
index 5f18b8da2..000000000
--- a/test/fixtures/input/tidyness.text
+++ /dev/null
@@ -1,5 +0,0 @@
-> A list within a blockquote:
-> 
-> *	asterisk 1
-> *	asterisk 2
-> *	asterisk 3
diff --git a/test/fixtures/input/title-attributes.text b/test/fixtures/input/title-attributes.text
deleted file mode 100644
index 049af7731..000000000
--- a/test/fixtures/input/title-attributes.text
+++ /dev/null
@@ -1,99 +0,0 @@
-# Links
-
-| Implementation | Characters | Nested | Mismatched | Escaped | Named Entities | Numbered Entities |
-| -------------- | ---------- |------- | ---------- | ------- | -------------- | ----------------- |
-| Markdown.pl    | `"`        | Yes    | Yes        | No      | Yes            | Yes               |
-| GitHub         | `"`        | Yes    | Yes        | No      | No             | No                |
-| CommonMark     | `"`        | No     | No         | Yes     | Yes            | Yes               |
-| Markdown.pl    | `'`        | Yes    | Yes        | No      | Yes            | Yes               |
-| GitHub         | `'`        | Yes    | Yes        | No      | No             | No                |
-| CommonMark     | `'`        | No     | No         | Yes     | Yes            | Yes               |
-| Markdown.pl    | `()`       | -      | -          | -       | -              | -                 |
-| GitHub         | `()`       | -      | -          | -       | -              | -                 |
-| CommonMark     | `()`       | No     | Yes        | Yes     | Yes            | Yes               |
-
-## Double quotes
-
-[Hello](./world.html "and text")
-
-[Hello](./world.html "and "matching delimiters"")
-
-[Hello](./world.html "and "mismatched delimiters")
-
-[Hello](./world.html "and \"escapes\"")
-
-[Hello](./world.html "and "named entities"")
-
-[Hello](./world.html "and "numbered entities"")
-
-## Single quotes
-
-[Hello](./world.html 'and text')
-
-[Hello](./world.html 'and 'matching delimiters'')
-
-[Hello](./world.html 'and 'mismatched delimiters')
-
-[Hello](./world.html 'and \'escapes\'')
-
-[Hello](./world.html 'and 'named entities'')
-
-[Hello](./world.html 'and 'numbered entities'')
-
-## Parentheses
-
-[Hello](./world.html (and text))
-
-[Hello](./world.html (and (matching delimiters)))
-
-[Hello](./world.html (and (mismatched delimiters))
-
-[Hello](./world.html (and \(escapes\)))
-
-[Hello](./world.html (and (named entities)))
-
-[Hello](./world.html (and (numbered entities)))
-
-# Images
-
-## Double quotes
-
-![Hello](./world.png "and text")
-
-![Hello](./world.png "and "matching delimiters"")
-
-![Hello](./world.png "and "mismatched delimiters")
-
-![Hello](./world.png "and \"escapes\"")
-
-![Hello](./world.png "and "named entities"")
-
-![Hello](./world.png "and "numbered entities"")
-
-## Single quotes
-
-![Hello](./world.png 'and text')
-
-![Hello](./world.png 'and 'matching delimiters'')
-
-![Hello](./world.png 'and 'mismatched delimiters')
-
-![Hello](./world.png 'and \'escapes\'')
-
-![Hello](./world.png 'and 'named entities'')
-
-![Hello](./world.png 'and 'numbered entities'')
-
-## Parentheses
-
-![Hello](./world.png (and text))
-
-![Hello](./world.png (and (matching delimiters)))
-
-![Hello](./world.png (and (mismatched delimiters))
-
-![Hello](./world.png (and \(escapes\)))
-
-![Hello](./world.png (and (named entities)))
-
-![Hello](./world.png (and (numbered entities)))
diff --git a/test/fixtures/input/toplevel-paragraphs.nooutput.text b/test/fixtures/input/toplevel-paragraphs.nooutput.text
deleted file mode 100644
index 66366c07c..000000000
--- a/test/fixtures/input/toplevel-paragraphs.nooutput.text
+++ /dev/null
@@ -1,37 +0,0 @@
-hello world
-    how are you
-    how are you
-
-hello world
-```
-how are you
-```
-
-hello world
-* * *
-
-hello world
-# how are you
-
-hello world
-how are you
-===========
-
-hello world
-> how are you
-
-hello world
-* how are you
-
-hello world
-
how are you

-
-hello world
-how are you
-
-hello [world][how]
-[how]: /are/you
-
-
hello

-
-hello
diff --git a/test/fixtures/input/tricky-list.text b/test/fixtures/input/tricky-list.text
deleted file mode 100644
index 9aa76ceb9..000000000
--- a/test/fixtures/input/tricky-list.text
+++ /dev/null
@@ -1,15 +0,0 @@
-**hello** _world_
-
-* hello world
-
-**hello** _world_
-
-* hello world
-
-**hello** _world_
-
-* Hello world
-
-**hello** _world_
-
-* hello world
diff --git a/test/fixtures/tree/amps-and-angles-encoding.json b/test/fixtures/tree/amps-and-angles-encoding.json
deleted file mode 100644
index 7472757f7..000000000
--- a/test/fixtures/tree/amps-and-angles-encoding.json
+++ /dev/null
@@ -1,558 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "AT&T has an ampersand in their name.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 37,
-              "offset": 36
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 37,
-          "offset": 36
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "AT&T is another way to write it.",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 38
-            },
-            "end": {
-              "line": 3,
-              "column": 37,
-              "offset": 74
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 38
-        },
-        "end": {
-          "line": 3,
-          "column": 37,
-          "offset": 74
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This & that.",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 76
-            },
-            "end": {
-              "line": 5,
-              "column": 13,
-              "offset": 88
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 76
-        },
-        "end": {
-          "line": 5,
-          "column": 13,
-          "offset": 88
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "4 < 5.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 90
-            },
-            "end": {
-              "line": 7,
-              "column": 7,
-              "offset": 96
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 90
-        },
-        "end": {
-          "line": 7,
-          "column": 7,
-          "offset": 96
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "6 > 5.",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 98
-            },
-            "end": {
-              "line": 9,
-              "column": 7,
-              "offset": 104
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 98
-        },
-        "end": {
-          "line": 9,
-          "column": 7,
-          "offset": 104
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here's a [link] ",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 106
-            },
-            "end": {
-              "line": 11,
-              "column": 17,
-              "offset": 122
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "1",
-              "position": {
-                "start": {
-                  "line": 11,
-                  "column": 18,
-                  "offset": 123
-                },
-                "end": {
-                  "line": 11,
-                  "column": 19,
-                  "offset": 124
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 17,
-              "offset": 122
-            },
-            "end": {
-              "line": 11,
-              "column": 20,
-              "offset": 125
-            }
-          },
-          "label": "1",
-          "identifier": "1",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": " with an ampersand in the URL.",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 20,
-              "offset": 125
-            },
-            "end": {
-              "line": 11,
-              "column": 50,
-              "offset": 155
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 106
-        },
-        "end": {
-          "line": 11,
-          "column": 50,
-          "offset": 155
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here's a link with an amersand in the link text: [AT&T] ",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 1,
-              "offset": 157
-            },
-            "end": {
-              "line": 13,
-              "column": 57,
-              "offset": 213
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "2",
-              "position": {
-                "start": {
-                  "line": 13,
-                  "column": 58,
-                  "offset": 214
-                },
-                "end": {
-                  "line": 13,
-                  "column": 59,
-                  "offset": 215
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 57,
-              "offset": 213
-            },
-            "end": {
-              "line": 13,
-              "column": 60,
-              "offset": 216
-            }
-          },
-          "label": "2",
-          "identifier": "2",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 60,
-              "offset": 216
-            },
-            "end": {
-              "line": 13,
-              "column": 61,
-              "offset": 217
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 157
-        },
-        "end": {
-          "line": 13,
-          "column": 61,
-          "offset": 217
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here's an inline ",
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 1,
-              "offset": 219
-            },
-            "end": {
-              "line": 15,
-              "column": 18,
-              "offset": 236
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "/script?foo=1&bar=2",
-          "children": [
-            {
-              "type": "text",
-              "value": "link",
-              "position": {
-                "start": {
-                  "line": 15,
-                  "column": 19,
-                  "offset": 237
-                },
-                "end": {
-                  "line": 15,
-                  "column": 23,
-                  "offset": 241
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 18,
-              "offset": 236
-            },
-            "end": {
-              "line": 15,
-              "column": 45,
-              "offset": 263
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 15,
-              "column": 45,
-              "offset": 263
-            },
-            "end": {
-              "line": 15,
-              "column": 46,
-              "offset": 264
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 219
-        },
-        "end": {
-          "line": 15,
-          "column": 46,
-          "offset": 264
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here's an inline ",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 266
-            },
-            "end": {
-              "line": 17,
-              "column": 18,
-              "offset": 283
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "/script?foo=1&bar=2",
-          "children": [
-            {
-              "type": "text",
-              "value": "link",
-              "position": {
-                "start": {
-                  "line": 17,
-                  "column": 19,
-                  "offset": 284
-                },
-                "end": {
-                  "line": 17,
-                  "column": 23,
-                  "offset": 288
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 18,
-              "offset": 283
-            },
-            "end": {
-              "line": 17,
-              "column": 47,
-              "offset": 312
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 47,
-              "offset": 312
-            },
-            "end": {
-              "line": 17,
-              "column": 48,
-              "offset": 313
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 266
-        },
-        "end": {
-          "line": 17,
-          "column": 48,
-          "offset": 313
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "1",
-      "label": "1",
-      "title": null,
-      "url": "http://example.com/?foo=1&bar=2",
-      "position": {
-        "start": {
-          "line": 20,
-          "column": 1,
-          "offset": 316
-        },
-        "end": {
-          "line": 20,
-          "column": 37,
-          "offset": 352
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "2",
-      "label": "2",
-      "title": "AT&T",
-      "url": "http://att.com/",
-      "position": {
-        "start": {
-          "line": 21,
-          "column": 1,
-          "offset": 353
-        },
-        "end": {
-          "line": 21,
-          "column": 29,
-          "offset": 381
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 22,
-      "column": 1,
-      "offset": 382
-    }
-  }
-}
diff --git a/test/fixtures/tree/auto-link-invalid.json b/test/fixtures/tree/auto-link-invalid.json
deleted file mode 100644
index f0c70ec4b..000000000
--- a/test/fixtures/tree/auto-link-invalid.json
+++ /dev/null
@@ -1,201 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 35,
-              "offset": 300
-            },
-            "end": {
-              "line": 15,
-              "column": 58,
-              "offset": 323
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 266
-        },
-        "end": {
-          "line": 15,
-          "column": 58,
-          "offset": 323
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "or here: ",
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 325
-        },
-        "end": {
-          "line": 17,
-          "column": 32,
-          "offset": 356
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 18,
-      "column": 1,
-      "offset": 357
-    }
-  }
-}
diff --git a/test/fixtures/tree/backslash-escapes.json b/test/fixtures/tree/backslash-escapes.json
deleted file mode 100644
index 3022e1f1b..000000000
--- a/test/fixtures/tree/backslash-escapes.json
+++ /dev/null
@@ -1,3598 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "These should all get escaped:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 30,
-              "offset": 29
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 30,
-          "offset": 29
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Backslash: \\",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 31
-            },
-            "end": {
-              "line": 3,
-              "column": 14,
-              "offset": 44
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 31
-        },
-        "end": {
-          "line": 3,
-          "column": 14,
-          "offset": 44
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Backtick: `",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 46
-            },
-            "end": {
-              "line": 5,
-              "column": 13,
-              "offset": 58
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 46
-        },
-        "end": {
-          "line": 5,
-          "column": 13,
-          "offset": 58
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Asterisk: *",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 60
-            },
-            "end": {
-              "line": 7,
-              "column": 13,
-              "offset": 72
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 60
-        },
-        "end": {
-          "line": 7,
-          "column": 13,
-          "offset": 72
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Underscore: _",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 74
-            },
-            "end": {
-              "line": 9,
-              "column": 15,
-              "offset": 88
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 74
-        },
-        "end": {
-          "line": 9,
-          "column": 15,
-          "offset": 88
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Left brace: {",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 90
-            },
-            "end": {
-              "line": 11,
-              "column": 15,
-              "offset": 104
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 90
-        },
-        "end": {
-          "line": 11,
-          "column": 15,
-          "offset": 104
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Right brace: }",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 1,
-              "offset": 106
-            },
-            "end": {
-              "line": 13,
-              "column": 16,
-              "offset": 121
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 106
-        },
-        "end": {
-          "line": 13,
-          "column": 16,
-          "offset": 121
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Left bracket: [",
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 1,
-              "offset": 123
-            },
-            "end": {
-              "line": 15,
-              "column": 17,
-              "offset": 139
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 123
-        },
-        "end": {
-          "line": 15,
-          "column": 17,
-          "offset": 139
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Right bracket: ]",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 141
-            },
-            "end": {
-              "line": 17,
-              "column": 18,
-              "offset": 158
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 141
-        },
-        "end": {
-          "line": 17,
-          "column": 18,
-          "offset": 158
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Left paren: (",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 1,
-              "offset": 160
-            },
-            "end": {
-              "line": 19,
-              "column": 15,
-              "offset": 174
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 1,
-          "offset": 160
-        },
-        "end": {
-          "line": 19,
-          "column": 15,
-          "offset": 174
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Right paren: )",
-          "position": {
-            "start": {
-              "line": 21,
-              "column": 1,
-              "offset": 176
-            },
-            "end": {
-              "line": 21,
-              "column": 16,
-              "offset": 191
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 21,
-          "column": 1,
-          "offset": 176
-        },
-        "end": {
-          "line": 21,
-          "column": 16,
-          "offset": 191
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Greater-than: >",
-          "position": {
-            "start": {
-              "line": 23,
-              "column": 1,
-              "offset": 193
-            },
-            "end": {
-              "line": 23,
-              "column": 17,
-              "offset": 209
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 23,
-          "column": 1,
-          "offset": 193
-        },
-        "end": {
-          "line": 23,
-          "column": 17,
-          "offset": 209
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Hash: #",
-          "position": {
-            "start": {
-              "line": 25,
-              "column": 1,
-              "offset": 211
-            },
-            "end": {
-              "line": 25,
-              "column": 9,
-              "offset": 219
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 25,
-          "column": 1,
-          "offset": 211
-        },
-        "end": {
-          "line": 25,
-          "column": 9,
-          "offset": 219
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Period: .",
-          "position": {
-            "start": {
-              "line": 27,
-              "column": 1,
-              "offset": 221
-            },
-            "end": {
-              "line": 27,
-              "column": 11,
-              "offset": 231
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 27,
-          "column": 1,
-          "offset": 221
-        },
-        "end": {
-          "line": 27,
-          "column": 11,
-          "offset": 231
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Bang: !",
-          "position": {
-            "start": {
-              "line": 29,
-              "column": 1,
-              "offset": 233
-            },
-            "end": {
-              "line": 29,
-              "column": 9,
-              "offset": 241
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 29,
-          "column": 1,
-          "offset": 233
-        },
-        "end": {
-          "line": 29,
-          "column": 9,
-          "offset": 241
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Plus: +",
-          "position": {
-            "start": {
-              "line": 31,
-              "column": 1,
-              "offset": 243
-            },
-            "end": {
-              "line": 31,
-              "column": 9,
-              "offset": 251
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
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-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 196,
-          "column": 1,
-          "offset": 1573
-        },
-        "end": {
-          "line": 196,
-          "column": 16,
-          "offset": 1588
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Single quote: ",
-          "position": {
-            "start": {
-              "line": 198,
-              "column": 1,
-              "offset": 1590
-            },
-            "end": {
-              "line": 198,
-              "column": 15,
-              "offset": 1604
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\'",
-          "position": {
-            "start": {
-              "line": 198,
-              "column": 15,
-              "offset": 1604
-            },
-            "end": {
-              "line": 198,
-              "column": 19,
-              "offset": 1608
-            }
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-          "offset": 1608
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Comma: ",
-          "position": {
-            "start": {
-              "line": 200,
-              "column": 1,
-              "offset": 1610
-            },
-            "end": {
-              "line": 200,
-              "column": 8,
-              "offset": 1617
-            }
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-        {
-          "type": "inlineCode",
-          "value": "\\,",
-          "position": {
-            "start": {
-              "line": 200,
-              "column": 8,
-              "offset": 1617
-            },
-            "end": {
-              "line": 200,
-              "column": 12,
-              "offset": 1621
-            }
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-        }
-      ],
-      "position": {
-        "start": {
-          "line": 200,
-          "column": 1,
-          "offset": 1610
-        },
-        "end": {
-          "line": 200,
-          "column": 12,
-          "offset": 1621
-        }
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-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Forward slash: ",
-          "position": {
-            "start": {
-              "line": 202,
-              "column": 1,
-              "offset": 1623
-            },
-            "end": {
-              "line": 202,
-              "column": 16,
-              "offset": 1638
-            }
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-        },
-        {
-          "type": "inlineCode",
-          "value": "\\/",
-          "position": {
-            "start": {
-              "line": 202,
-              "column": 16,
-              "offset": 1638
-            },
-            "end": {
-              "line": 202,
-              "column": 20,
-              "offset": 1642
-            }
-          }
-        }
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-      "position": {
-        "start": {
-          "line": 202,
-          "column": 1,
-          "offset": 1623
-        },
-        "end": {
-          "line": 202,
-          "column": 20,
-          "offset": 1642
-        }
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-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Colon: ",
-          "position": {
-            "start": {
-              "line": 204,
-              "column": 1,
-              "offset": 1644
-            },
-            "end": {
-              "line": 204,
-              "column": 8,
-              "offset": 1651
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\:",
-          "position": {
-            "start": {
-              "line": 204,
-              "column": 8,
-              "offset": 1651
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-            "end": {
-              "line": 204,
-              "column": 12,
-              "offset": 1655
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 204,
-          "column": 1,
-          "offset": 1644
-        },
-        "end": {
-          "line": 204,
-          "column": 12,
-          "offset": 1655
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Semicolon: ",
-          "position": {
-            "start": {
-              "line": 206,
-              "column": 1,
-              "offset": 1657
-            },
-            "end": {
-              "line": 206,
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-              "offset": 1668
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\;",
-          "position": {
-            "start": {
-              "line": 206,
-              "column": 12,
-              "offset": 1668
-            },
-            "end": {
-              "line": 206,
-              "column": 16,
-              "offset": 1672
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 206,
-          "column": 1,
-          "offset": 1657
-        },
-        "end": {
-          "line": 206,
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-          "offset": 1672
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Less-than: ",
-          "position": {
-            "start": {
-              "line": 208,
-              "column": 1,
-              "offset": 1674
-            },
-            "end": {
-              "line": 208,
-              "column": 12,
-              "offset": 1685
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\<",
-          "position": {
-            "start": {
-              "line": 208,
-              "column": 12,
-              "offset": 1685
-            },
-            "end": {
-              "line": 208,
-              "column": 16,
-              "offset": 1689
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 208,
-          "column": 1,
-          "offset": 1674
-        },
-        "end": {
-          "line": 208,
-          "column": 16,
-          "offset": 1689
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Equals: ",
-          "position": {
-            "start": {
-              "line": 210,
-              "column": 1,
-              "offset": 1691
-            },
-            "end": {
-              "line": 210,
-              "column": 9,
-              "offset": 1699
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\=",
-          "position": {
-            "start": {
-              "line": 210,
-              "column": 9,
-              "offset": 1699
-            },
-            "end": {
-              "line": 210,
-              "column": 13,
-              "offset": 1703
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 210,
-          "column": 1,
-          "offset": 1691
-        },
-        "end": {
-          "line": 210,
-          "column": 13,
-          "offset": 1703
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Question mark: ",
-          "position": {
-            "start": {
-              "line": 212,
-              "column": 1,
-              "offset": 1705
-            },
-            "end": {
-              "line": 212,
-              "column": 16,
-              "offset": 1720
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\?",
-          "position": {
-            "start": {
-              "line": 212,
-              "column": 16,
-              "offset": 1720
-            },
-            "end": {
-              "line": 212,
-              "column": 20,
-              "offset": 1724
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 212,
-          "column": 1,
-          "offset": 1705
-        },
-        "end": {
-          "line": 212,
-          "column": 20,
-          "offset": 1724
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "At-sign: ",
-          "position": {
-            "start": {
-              "line": 214,
-              "column": 1,
-              "offset": 1726
-            },
-            "end": {
-              "line": 214,
-              "column": 10,
-              "offset": 1735
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\@",
-          "position": {
-            "start": {
-              "line": 214,
-              "column": 10,
-              "offset": 1735
-            },
-            "end": {
-              "line": 214,
-              "column": 14,
-              "offset": 1739
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 214,
-          "column": 1,
-          "offset": 1726
-        },
-        "end": {
-          "line": 214,
-          "column": 14,
-          "offset": 1739
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Caret: ",
-          "position": {
-            "start": {
-              "line": 216,
-              "column": 1,
-              "offset": 1741
-            },
-            "end": {
-              "line": 216,
-              "column": 8,
-              "offset": 1748
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\^",
-          "position": {
-            "start": {
-              "line": 216,
-              "column": 8,
-              "offset": 1748
-            },
-            "end": {
-              "line": 216,
-              "column": 12,
-              "offset": 1752
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 216,
-          "column": 1,
-          "offset": 1741
-        },
-        "end": {
-          "line": 216,
-          "column": 12,
-          "offset": 1752
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "New line: ",
-          "position": {
-            "start": {
-              "line": 218,
-              "column": 1,
-              "offset": 1754
-            },
-            "end": {
-              "line": 218,
-              "column": 11,
-              "offset": 1764
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\\n",
-          "position": {
-            "start": {
-              "line": 218,
-              "column": 11,
-              "offset": 1764
-            },
-            "end": {
-              "line": 219,
-              "column": 2,
-              "offset": 1768
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": " only works in paragraphs.",
-          "position": {
-            "start": {
-              "line": 219,
-              "column": 2,
-              "offset": 1768
-            },
-            "end": {
-              "line": 219,
-              "column": 28,
-              "offset": 1794
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 218,
-          "column": 1,
-          "offset": 1754
-        },
-        "end": {
-          "line": 219,
-          "column": 28,
-          "offset": 1794
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "These should get escaped, even though they're matching pairs for\nother Markdown constructs:",
-          "position": {
-            "start": {
-              "line": 221,
-              "column": 1,
-              "offset": 1796
-            },
-            "end": {
-              "line": 222,
-              "column": 27,
-              "offset": 1887
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 221,
-          "column": 1,
-          "offset": 1796
-        },
-        "end": {
-          "line": 222,
-          "column": 27,
-          "offset": 1887
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "*asterisks*",
-          "position": {
-            "start": {
-              "line": 224,
-              "column": 1,
-              "offset": 1889
-            },
-            "end": {
-              "line": 224,
-              "column": 14,
-              "offset": 1902
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 224,
-          "column": 1,
-          "offset": 1889
-        },
-        "end": {
-          "line": 224,
-          "column": 14,
-          "offset": 1902
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "_underscores_",
-          "position": {
-            "start": {
-              "line": 226,
-              "column": 1,
-              "offset": 1904
-            },
-            "end": {
-              "line": 226,
-              "column": 16,
-              "offset": 1919
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 226,
-          "column": 1,
-          "offset": 1904
-        },
-        "end": {
-          "line": 226,
-          "column": 16,
-          "offset": 1919
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "`backticks`",
-          "position": {
-            "start": {
-              "line": 228,
-              "column": 1,
-              "offset": 1921
-            },
-            "end": {
-              "line": 228,
-              "column": 14,
-              "offset": 1934
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 228,
-          "column": 1,
-          "offset": 1921
-        },
-        "end": {
-          "line": 228,
-          "column": 14,
-          "offset": 1934
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a code span with a literal backslash-backtick sequence: ",
-          "position": {
-            "start": {
-              "line": 230,
-              "column": 1,
-              "offset": 1936
-            },
-            "end": {
-              "line": 230,
-              "column": 65,
-              "offset": 2000
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\\`",
-          "position": {
-            "start": {
-              "line": 230,
-              "column": 65,
-              "offset": 2000
-            },
-            "end": {
-              "line": 230,
-              "column": 73,
-              "offset": 2008
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 230,
-          "column": 1,
-          "offset": 1936
-        },
-        "end": {
-          "line": 230,
-          "column": 73,
-          "offset": 2008
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a tag with unescaped backticks ",
-          "position": {
-            "start": {
-              "line": 232,
-              "column": 1,
-              "offset": 2010
-            },
-            "end": {
-              "line": 232,
-              "column": 40,
-              "offset": 2049
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 232,
-              "column": 40,
-              "offset": 2049
-            },
-            "end": {
-              "line": 232,
-              "column": 61,
-              "offset": 2070
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "bar",
-          "position": {
-            "start": {
-              "line": 232,
-              "column": 61,
-              "offset": 2070
-            },
-            "end": {
-              "line": 232,
-              "column": 64,
-              "offset": 2073
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 232,
-              "column": 64,
-              "offset": 2073
-            },
-            "end": {
-              "line": 232,
-              "column": 71,
-              "offset": 2080
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 232,
-              "column": 71,
-              "offset": 2080
-            },
-            "end": {
-              "line": 232,
-              "column": 72,
-              "offset": 2081
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 232,
-          "column": 1,
-          "offset": 2010
-        },
-        "end": {
-          "line": 232,
-          "column": 72,
-          "offset": 2081
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a tag with backslashes ",
-          "position": {
-            "start": {
-              "line": 234,
-              "column": 1,
-              "offset": 2083
-            },
-            "end": {
-              "line": 234,
-              "column": 32,
-              "offset": 2114
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 234,
-              "column": 32,
-              "offset": 2114
-            },
-            "end": {
-              "line": 234,
-              "column": 61,
-              "offset": 2143
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "bar",
-          "position": {
-            "start": {
-              "line": 234,
-              "column": 61,
-              "offset": 2143
-            },
-            "end": {
-              "line": 234,
-              "column": 64,
-              "offset": 2146
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 234,
-              "column": 64,
-              "offset": 2146
-            },
-            "end": {
-              "line": 234,
-              "column": 71,
-              "offset": 2153
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 234,
-              "column": 71,
-              "offset": 2153
-            },
-            "end": {
-              "line": 234,
-              "column": 72,
-              "offset": 2154
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 234,
-          "column": 1,
-          "offset": 2083
-        },
-        "end": {
-          "line": 234,
-          "column": 72,
-          "offset": 2154
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 235,
-      "column": 1,
-      "offset": 2155
-    }
-  }
-}
diff --git a/test/fixtures/tree/block-elements.json b/test/fixtures/tree/block-elements.json
deleted file mode 100644
index d7e625b05..000000000
--- a/test/fixtures/tree/block-elements.json
+++ /dev/null
@@ -1,616 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Different lists should receive two newline characters\nbetween them.",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 5,
-                      "offset": 4
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 18,
-                      "offset": 75
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                },
-                "end": {
-                  "line": 2,
-                  "column": 18,
-                  "offset": 75
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 2,
-              "column": 18,
-              "offset": 75
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "This is another list.",
-                  "position": {
-                    "start": {
-                      "line": 5,
-                      "column": 5,
-                      "offset": 82
-                    },
-                    "end": {
-                      "line": 5,
-                      "column": 26,
-                      "offset": 103
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 5,
-                  "offset": 82
-                },
-                "end": {
-                  "line": 5,
-                  "column": 26,
-                  "offset": 103
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 78
-            },
-            "end": {
-              "line": 5,
-              "column": 26,
-              "offset": 103
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 5,
-          "column": 26,
-          "offset": 103
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "list",
-          "ordered": false,
-          "start": null,
-          "spread": true,
-          "children": [
-            {
-              "type": "listItem",
-              "spread": false,
-              "checked": null,
-              "children": [
-                {
-                  "type": "paragraph",
-                  "children": [
-                    {
-                      "type": "text",
-                      "value": "The same goes for lists in block quotes.",
-                      "position": {
-                        "start": {
-                          "line": 7,
-                          "column": 8,
-                          "offset": 112
-                        },
-                        "end": {
-                          "line": 7,
-                          "column": 48,
-                          "offset": 152
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 7,
-                      "column": 8,
-                      "offset": 112
-                    },
-                    "end": {
-                      "line": 7,
-                      "column": 48,
-                      "offset": 152
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 4,
-                  "offset": 108
-                },
-                "end": {
-                  "line": 7,
-                  "column": 48,
-                  "offset": 152
-                }
-              }
-            },
-            {
-              "type": "listItem",
-              "spread": false,
-              "checked": null,
-              "children": [
-                {
-                  "type": "paragraph",
-                  "children": [
-                    {
-                      "type": "text",
-                      "value": "This is another list.",
-                      "position": {
-                        "start": {
-                          "line": 10,
-                          "column": 8,
-                          "offset": 164
-                        },
-                        "end": {
-                          "line": 10,
-                          "column": 29,
-                          "offset": 185
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 10,
-                      "column": 8,
-                      "offset": 164
-                    },
-                    "end": {
-                      "line": 10,
-                      "column": 29,
-                      "offset": 185
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 10,
-                  "column": 4,
-                  "offset": 160
-                },
-                "end": {
-                  "line": 10,
-                  "column": 29,
-                  "offset": 185
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 4,
-              "offset": 108
-            },
-            "end": {
-              "line": 10,
-              "column": 29,
-              "offset": 185
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 105
-        },
-        "end": {
-          "line": 10,
-          "column": 29,
-          "offset": 185
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "And for lists in lists:",
-                  "position": {
-                    "start": {
-                      "line": 12,
-                      "column": 5,
-                      "offset": 191
-                    },
-                    "end": {
-                      "line": 12,
-                      "column": 28,
-                      "offset": 214
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 12,
-                  "column": 5,
-                  "offset": 191
-                },
-                "end": {
-                  "line": 12,
-                  "column": 28,
-                  "offset": 214
-                }
-              }
-            },
-            {
-              "type": "list",
-              "ordered": true,
-              "start": 1,
-              "spread": true,
-              "children": [
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "First sublist.",
-                          "position": {
-                            "start": {
-                              "line": 14,
-                              "column": 10,
-                              "offset": 225
-                            },
-                            "end": {
-                              "line": 14,
-                              "column": 24,
-                              "offset": 239
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 14,
-                          "column": 10,
-                          "offset": 225
-                        },
-                        "end": {
-                          "line": 14,
-                          "column": 24,
-                          "offset": 239
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 14,
-                      "column": 5,
-                      "offset": 220
-                    },
-                    "end": {
-                      "line": 14,
-                      "column": 24,
-                      "offset": 239
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "Second sublist.",
-                          "position": {
-                            "start": {
-                              "line": 17,
-                              "column": 10,
-                              "offset": 251
-                            },
-                            "end": {
-                              "line": 17,
-                              "column": 25,
-                              "offset": 266
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 17,
-                          "column": 10,
-                          "offset": 251
-                        },
-                        "end": {
-                          "line": 17,
-                          "column": 25,
-                          "offset": 266
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 17,
-                      "column": 5,
-                      "offset": 246
-                    },
-                    "end": {
-                      "line": 17,
-                      "column": 25,
-                      "offset": 266
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 14,
-                  "column": 5,
-                  "offset": 220
-                },
-                "end": {
-                  "line": 17,
-                  "column": 25,
-                  "offset": 266
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 12,
-              "column": 1,
-              "offset": 187
-            },
-            "end": {
-              "line": 17,
-              "column": 25,
-              "offset": 266
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 187
-        },
-        "end": {
-          "line": 17,
-          "column": 25,
-          "offset": 266
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "And for lists followed by indented code blocks:",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 1,
-              "offset": 268
-            },
-            "end": {
-              "line": 19,
-              "column": 48,
-              "offset": 315
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 1,
-          "offset": 268
-        },
-        "end": {
-          "line": 19,
-          "column": 48,
-          "offset": 315
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "This is a paragraph in a list",
-                  "position": {
-                    "start": {
-                      "line": 21,
-                      "column": 5,
-                      "offset": 321
-                    },
-                    "end": {
-                      "line": 21,
-                      "column": 34,
-                      "offset": 350
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 21,
-                  "column": 5,
-                  "offset": 321
-                },
-                "end": {
-                  "line": 21,
-                  "column": 34,
-                  "offset": 350
-                }
-              }
-            },
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "And this is code();",
-                  "position": {
-                    "start": {
-                      "line": 24,
-                      "column": 5,
-                      "offset": 357
-                    },
-                    "end": {
-                      "line": 24,
-                      "column": 24,
-                      "offset": 376
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 24,
-                  "column": 5,
-                  "offset": 357
-                },
-                "end": {
-                  "line": 24,
-                  "column": 24,
-                  "offset": 376
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 21,
-              "column": 1,
-              "offset": 317
-            },
-            "end": {
-              "line": 24,
-              "column": 24,
-              "offset": 376
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 21,
-          "column": 1,
-          "offset": 317
-        },
-        "end": {
-          "line": 24,
-          "column": 24,
-          "offset": 376
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 25,
-      "column": 1,
-      "offset": 377
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquote-indented.json b/test/fixtures/tree/blockquote-indented.json
deleted file mode 100644
index c0a017416..000000000
--- a/test/fixtures/tree/blockquote-indented.json
+++ /dev/null
@@ -1,67 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "bar\nbaz",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 6,
-                  "offset": 5
-                },
-                "end": {
-                  "line": 2,
-                  "column": 7,
-                  "offset": 15
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 6,
-              "offset": 5
-            },
-            "end": {
-              "line": 2,
-              "column": 7,
-              "offset": 15
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 4,
-          "offset": 3
-        },
-        "end": {
-          "line": 2,
-          "column": 7,
-          "offset": 15
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 1,
-      "offset": 16
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquote-lazy-code.json b/test/fixtures/tree/blockquote-lazy-code.json
deleted file mode 100644
index 2f8cd54f0..000000000
--- a/test/fixtures/tree/blockquote-lazy-code.json
+++ /dev/null
@@ -1,70 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "code",
-          "lang": null,
-          "meta": null,
-          "value": "foo",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 10,
-              "offset": 9
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 10,
-          "offset": 9
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "bar",
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 10
-        },
-        "end": {
-          "line": 2,
-          "column": 8,
-          "offset": 17
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 1,
-      "offset": 18
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquote-lazy-fence.json b/test/fixtures/tree/blockquote-lazy-fence.json
deleted file mode 100644
index f82010bac..000000000
--- a/test/fixtures/tree/blockquote-lazy-fence.json
+++ /dev/null
@@ -1,408 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "code",
-          "lang": null,
-          "meta": null,
-          "value": "aNormalCodeBlockInABlockqoute();",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 3,
-              "column": 6,
-              "offset": 46
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 6,
-          "offset": 46
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "A paragraph.",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 48
-            },
-            "end": {
-              "line": 5,
-              "column": 13,
-              "offset": 60
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 48
-        },
-        "end": {
-          "line": 5,
-          "column": 13,
-          "offset": 60
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "code",
-          "lang": null,
-          "meta": null,
-          "value": "",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 3,
-              "offset": 64
-            },
-            "end": {
-              "line": 7,
-              "column": 6,
-              "offset": 67
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 62
-        },
-        "end": {
-          "line": 7,
-          "column": 6,
-          "offset": 67
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "thisIsAlsoSomeCodeInABlockquote();",
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 68
-            },
-            "end": {
-              "line": 8,
-              "column": 35,
-              "offset": 102
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 68
-        },
-        "end": {
-          "line": 8,
-          "column": 35,
-          "offset": 102
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "code",
-          "lang": null,
-          "meta": null,
-          "value": "",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 3,
-              "offset": 105
-            },
-            "end": {
-              "line": 9,
-              "column": 6,
-              "offset": 108
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 103
-        },
-        "end": {
-          "line": 9,
-          "column": 6,
-          "offset": 108
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "A paragraph.",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 110
-            },
-            "end": {
-              "line": 11,
-              "column": 13,
-              "offset": 122
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 110
-        },
-        "end": {
-          "line": 11,
-          "column": 13,
-          "offset": 122
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "code",
-          "lang": null,
-          "meta": null,
-          "value": "",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 3,
-              "offset": 126
-            },
-            "end": {
-              "line": 13,
-              "column": 6,
-              "offset": 129
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 124
-        },
-        "end": {
-          "line": 13,
-          "column": 6,
-          "offset": 129
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "aNonTerminatedCodeBlockInABlockquote();",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 1,
-              "offset": 130
-            },
-            "end": {
-              "line": 14,
-              "column": 40,
-              "offset": 169
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 130
-        },
-        "end": {
-          "line": 14,
-          "column": 40,
-          "offset": 169
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "aNewCodeBlockFollowingTheBlockQuote();",
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 170
-        },
-        "end": {
-          "line": 17,
-          "column": 4,
-          "offset": 216
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "A paragraph.",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 1,
-              "offset": 218
-            },
-            "end": {
-              "line": 19,
-              "column": 13,
-              "offset": 230
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 1,
-          "offset": 218
-        },
-        "end": {
-          "line": 19,
-          "column": 13,
-          "offset": 230
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Something in a blockquote.",
-              "position": {
-                "start": {
-                  "line": 21,
-                  "column": 3,
-                  "offset": 234
-                },
-                "end": {
-                  "line": 21,
-                  "column": 29,
-                  "offset": 260
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 21,
-              "column": 3,
-              "offset": 234
-            },
-            "end": {
-              "line": 21,
-              "column": 29,
-              "offset": 260
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 21,
-          "column": 1,
-          "offset": 232
-        },
-        "end": {
-          "line": 21,
-          "column": 29,
-          "offset": 260
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "aNewCodeBlock();",
-      "position": {
-        "start": {
-          "line": 22,
-          "column": 1,
-          "offset": 261
-        },
-        "end": {
-          "line": 24,
-          "column": 4,
-          "offset": 285
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 25,
-      "column": 1,
-      "offset": 286
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquote-lazy-list.json b/test/fixtures/tree/blockquote-lazy-list.json
deleted file mode 100644
index 7f66f0603..000000000
--- a/test/fixtures/tree/blockquote-lazy-list.json
+++ /dev/null
@@ -1,139 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "This is a blockquote.",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 24,
-                  "offset": 23
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 24,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 24,
-          "offset": 23
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "And in normal mode this is an internal list, but in commonmark this is a top level list.",
-                  "position": {
-                    "start": {
-                      "line": 2,
-                      "column": 3,
-                      "offset": 26
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 91,
-                      "offset": 114
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 2,
-                  "column": 3,
-                  "offset": 26
-                },
-                "end": {
-                  "line": 2,
-                  "column": 91,
-                  "offset": 114
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 24
-            },
-            "end": {
-              "line": 2,
-              "column": 91,
-              "offset": 114
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 24
-        },
-        "end": {
-          "line": 2,
-          "column": 91,
-          "offset": 114
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 1,
-      "offset": 115
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquote-lazy-rule.json b/test/fixtures/tree/blockquote-lazy-rule.json
deleted file mode 100644
index 8c2e7f49e..000000000
--- a/test/fixtures/tree/blockquote-lazy-rule.json
+++ /dev/null
@@ -1,82 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "This is a blockquote. Followed by a rule.",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 44,
-                  "offset": 43
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 44,
-              "offset": 43
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 44,
-          "offset": 43
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 44
-        },
-        "end": {
-          "line": 2,
-          "column": 6,
-          "offset": 49
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 1,
-      "offset": 50
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquote-list-item.json b/test/fixtures/tree/blockquote-list-item.json
deleted file mode 100644
index 0575f34df..000000000
--- a/test/fixtures/tree/blockquote-list-item.json
+++ /dev/null
@@ -1,172 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This fails in markdown.pl and upskirt:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 39,
-              "offset": 38
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 39,
-          "offset": 38
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "hello",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 3,
-                      "offset": 42
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 8,
-                      "offset": 47
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 42
-                },
-                "end": {
-                  "line": 3,
-                  "column": 8,
-                  "offset": 47
-                }
-              }
-            },
-            {
-              "type": "blockquote",
-              "children": [
-                {
-                  "type": "paragraph",
-                  "children": [
-                    {
-                      "type": "text",
-                      "value": "world",
-                      "position": {
-                        "start": {
-                          "line": 4,
-                          "column": 5,
-                          "offset": 52
-                        },
-                        "end": {
-                          "line": 4,
-                          "column": 10,
-                          "offset": 57
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 4,
-                      "column": 5,
-                      "offset": 52
-                    },
-                    "end": {
-                      "line": 4,
-                      "column": 10,
-                      "offset": 57
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 3,
-                  "offset": 50
-                },
-                "end": {
-                  "line": 4,
-                  "column": 10,
-                  "offset": 57
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 40
-            },
-            "end": {
-              "line": 4,
-              "column": 10,
-              "offset": 57
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 40
-        },
-        "end": {
-          "line": 4,
-          "column": 10,
-          "offset": 57
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 5,
-      "column": 1,
-      "offset": 58
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquotes-empty-lines.output.json b/test/fixtures/tree/blockquotes-empty-lines.output.json
deleted file mode 100644
index adcac5aa6..000000000
--- a/test/fixtures/tree/blockquotes-empty-lines.output.json
+++ /dev/null
@@ -1,100 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Note there is no space on the following line.",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 48,
-                  "offset": 47
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 48,
-              "offset": 47
-            }
-          }
-        },
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Note there is no space on the preceding line.",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 52
-                },
-                "end": {
-                  "line": 3,
-                  "column": 48,
-                  "offset": 97
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 3,
-              "offset": 52
-            },
-            "end": {
-              "line": 3,
-              "column": 48,
-              "offset": 97
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 48,
-          "offset": 97
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 98
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquotes-with-code-blocks.json b/test/fixtures/tree/blockquotes-with-code-blocks.json
deleted file mode 100644
index f01a0889a..000000000
--- a/test/fixtures/tree/blockquotes-with-code-blocks.json
+++ /dev/null
@@ -1,136 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Example:",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 11,
-                  "offset": 10
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            }
-          }
-        },
-        {
-          "type": "code",
-          "lang": null,
-          "meta": null,
-          "value": "sub status {\n    print \"working\";\n}",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 3,
-              "offset": 16
-            },
-            "end": {
-              "line": 5,
-              "column": 8,
-              "offset": 67
-            }
-          }
-        },
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Or:",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 3,
-                  "offset": 73
-                },
-                "end": {
-                  "line": 7,
-                  "column": 6,
-                  "offset": 76
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 3,
-              "offset": 73
-            },
-            "end": {
-              "line": 7,
-              "column": 6,
-              "offset": 76
-            }
-          }
-        },
-        {
-          "type": "code",
-          "lang": null,
-          "meta": null,
-          "value": "sub status {\n    return \"working\";\n}",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 3,
-              "offset": 82
-            },
-            "end": {
-              "line": 11,
-              "column": 8,
-              "offset": 134
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 11,
-          "column": 8,
-          "offset": 134
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 12,
-      "column": 1,
-      "offset": 135
-    }
-  }
-}
diff --git a/test/fixtures/tree/blockquotes.json b/test/fixtures/tree/blockquotes.json
deleted file mode 100644
index dce2caa78..000000000
--- a/test/fixtures/tree/blockquotes.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "This is a blockquote.",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 24,
-                  "offset": 23
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 24,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 24,
-          "offset": 23
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "This is, in commonmark mode and gfm mode, another blockquote.",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 27
-                },
-                "end": {
-                  "line": 3,
-                  "column": 64,
-                  "offset": 88
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 3,
-              "offset": 27
-            },
-            "end": {
-              "line": 3,
-              "column": 64,
-              "offset": 88
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 25
-        },
-        "end": {
-          "line": 3,
-          "column": 64,
-          "offset": 88
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 89
-    }
-  }
-}
diff --git a/test/fixtures/tree/bom.json b/test/fixtures/tree/bom.json
deleted file mode 100644
index 4d935d628..000000000
--- a/test/fixtures/tree/bom.json
+++ /dev/null
@@ -1,84 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Hello from a BOM",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 19,
-              "offset": 18
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 19,
-          "offset": 18
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Be careful when editing this file!",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 20
-            },
-            "end": {
-              "line": 3,
-              "column": 35,
-              "offset": 54
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 20
-        },
-        "end": {
-          "line": 3,
-          "column": 35,
-          "offset": 54
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 55
-    }
-  }
-}
diff --git a/test/fixtures/tree/breaks-hard.json b/test/fixtures/tree/breaks-hard.json
deleted file mode 100644
index 0866751b8..000000000
--- a/test/fixtures/tree/breaks-hard.json
+++ /dev/null
@@ -1,403 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "These are not breaks:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 22,
-              "offset": 21
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 22,
-          "offset": 21
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Look at the\npretty line\nbreaks.",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 23
-            },
-            "end": {
-              "line": 5,
-              "column": 8,
-              "offset": 54
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 23
-        },
-        "end": {
-          "line": 5,
-          "column": 8,
-          "offset": 54
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "These are breaks:",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 56
-            },
-            "end": {
-              "line": 7,
-              "column": 18,
-              "offset": 73
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 56
-        },
-        "end": {
-          "line": 7,
-          "column": 18,
-          "offset": 73
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Look at the",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 75
-            },
-            "end": {
-              "line": 9,
-              "column": 12,
-              "offset": 86
-            }
-          }
-        },
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-            }
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-        {
-          "type": "text",
-          "value": "pretty line",
-          "position": {
-            "start": {
-              "line": 10,
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-            },
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-            "end": {
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-              "offset": 103
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "breaks.",
-          "position": {
-            "start": {
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-              "column": 1,
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-        }
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-          "type": "text",
-          "value": "In ",
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-            "start": {
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-            }
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-          "type": "text",
-          "value": " mode, an escaped newline character is exposed as a ",
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-            },
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-            }
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-          "type": "text",
-          "value": "pretty line",
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-            "start": {
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-            },
-            "end": {
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-            }
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-            }
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-        {
-          "type": "text",
-          "value": "breaks.",
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-            }
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-    }
-  }
-}
diff --git a/test/fixtures/tree/case-insensitive-refs.json b/test/fixtures/tree/case-insensitive-refs.json
deleted file mode 100644
index 1048387f6..000000000
--- a/test/fixtures/tree/case-insensitive-refs.json
+++ /dev/null
@@ -1,89 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "hi",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 5,
-              "offset": 4
-            }
-          },
-          "label": "hi",
-          "identifier": "hi",
-          "referenceType": "shortcut"
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 5,
-          "offset": 4
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "hi",
-      "label": "HI",
-      "title": null,
-      "url": "/url",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 6
-        },
-        "end": {
-          "line": 3,
-          "column": 11,
-          "offset": 16
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 17
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-block-indentation.nooutput.json b/test/fixtures/tree/code-block-indentation.nooutput.json
deleted file mode 100644
index aee34cdc5..000000000
--- a/test/fixtures/tree/code-block-indentation.nooutput.json
+++ /dev/null
@@ -1,170 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Fenced code blocks are normally not exdented, however,\nwhen the initial fence is indented by spaces, the value of\nthe code is exdented by up to that amount of spaces.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 3,
-              "column": 53,
-              "offset": 166
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 53,
-          "offset": 166
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "    This is a code block...\n        \n    ...which is not exdented.",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 168
-        },
-        "end": {
-          "line": 9,
-          "column": 4,
-          "offset": 242
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "But...",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 244
-            },
-            "end": {
-              "line": 11,
-              "column": 7,
-              "offset": 250
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 244
-        },
-        "end": {
-          "line": 11,
-          "column": 7,
-          "offset": 250
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "  This one...\n      \n  ...is.",
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 3,
-          "offset": 254
-        },
-        "end": {
-          "line": 17,
-          "column": 6,
-          "offset": 299
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "And...",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 1,
-              "offset": 301
-            },
-            "end": {
-              "line": 19,
-              "column": 7,
-              "offset": 307
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 1,
-          "offset": 301
-        },
-        "end": {
-          "line": 19,
-          "column": 7,
-          "offset": 307
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "So is this...\n      \n  ...one.",
-      "position": {
-        "start": {
-          "line": 21,
-          "column": 2,
-          "offset": 310
-        },
-        "end": {
-          "line": 25,
-          "column": 5,
-          "offset": 351
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 26,
-      "column": 1,
-      "offset": 352
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-block-nesting-bug.json b/test/fixtures/tree/code-block-nesting-bug.json
deleted file mode 100644
index 8600a8cab..000000000
--- a/test/fixtures/tree/code-block-nesting-bug.json
+++ /dev/null
@@ -1,305 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "GitHub, thus RedCarpet, has a bug where “nested” fenced code blocks,\neven with shorter fences, can exit their actual “parent” block.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 2,
-              "column": 64,
-              "offset": 132
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 64,
-          "offset": 132
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Note: not any more! ",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 134
-            },
-            "end": {
-              "line": 4,
-              "column": 21,
-              "offset": 154
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "https://github.com/remarkjs/remark/issues/323",
-          "children": [
-            {
-              "type": "text",
-              "value": "https://github.com/remarkjs/remark/issues/323",
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 22,
-                  "offset": 155
-                },
-                "end": {
-                  "line": 4,
-                  "column": 67,
-                  "offset": 200
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 21,
-              "offset": 154
-            },
-            "end": {
-              "line": 4,
-              "column": 68,
-              "offset": 201
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 68,
-              "offset": 201
-            },
-            "end": {
-              "line": 4,
-              "column": 69,
-              "offset": 202
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 134
-        },
-        "end": {
-          "line": 4,
-          "column": 69,
-          "offset": 202
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Note that this bug does not occur on indented code-blocks.",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 204
-            },
-            "end": {
-              "line": 6,
-              "column": 59,
-              "offset": 262
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 204
-        },
-        "end": {
-          "line": 6,
-          "column": 59,
-          "offset": 262
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "foo",
-      "meta": null,
-      "value": "```bar\nbaz\n```",
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 264
-        },
-        "end": {
-          "line": 12,
-          "column": 5,
-          "offset": 291
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Even with a different fence marker:",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 1,
-              "offset": 293
-            },
-            "end": {
-              "line": 14,
-              "column": 36,
-              "offset": 328
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 293
-        },
-        "end": {
-          "line": 14,
-          "column": 36,
-          "offset": 328
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "foo",
-      "meta": null,
-      "value": "~~~bar\nbaz\n~~~",
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 330
-        },
-        "end": {
-          "line": 20,
-          "column": 5,
-          "offset": 357
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "And reversed:",
-          "position": {
-            "start": {
-              "line": 22,
-              "column": 1,
-              "offset": 359
-            },
-            "end": {
-              "line": 22,
-              "column": 14,
-              "offset": 372
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 22,
-          "column": 1,
-          "offset": 359
-        },
-        "end": {
-          "line": 22,
-          "column": 14,
-          "offset": 372
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "foo",
-      "meta": null,
-      "value": "~~~bar\nbaz\n~~~",
-      "position": {
-        "start": {
-          "line": 24,
-          "column": 1,
-          "offset": 374
-        },
-        "end": {
-          "line": 28,
-          "column": 5,
-          "offset": 401
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "foo",
-      "meta": null,
-      "value": "```bar\nbaz\n```",
-      "position": {
-        "start": {
-          "line": 30,
-          "column": 1,
-          "offset": 403
-        },
-        "end": {
-          "line": 34,
-          "column": 5,
-          "offset": 430
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 35,
-      "column": 1,
-      "offset": 431
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-block.output.fence=`.json b/test/fixtures/tree/code-block.output.fence=`.json
deleted file mode 100644
index b9d72d134..000000000
--- a/test/fixtures/tree/code-block.output.fence=`.json
+++ /dev/null
@@ -1,68 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Ticks:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 7,
-          "offset": 6
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "javascript",
-      "meta": null,
-      "value": "alert('Hello World!');",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 8
-        },
-        "end": {
-          "line": 5,
-          "column": 4,
-          "offset": 48
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 49
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-block.output.fence=~.json b/test/fixtures/tree/code-block.output.fence=~.json
deleted file mode 100644
index f67b77fa3..000000000
--- a/test/fixtures/tree/code-block.output.fence=~.json
+++ /dev/null
@@ -1,68 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Tildes:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 8,
-              "offset": 7
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 8,
-          "offset": 7
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "javascript",
-      "meta": null,
-      "value": "alert('Hello World!');",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 9
-        },
-        "end": {
-          "line": 5,
-          "column": 4,
-          "offset": 49
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 50
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-blocks.json b/test/fixtures/tree/code-blocks.json
deleted file mode 100644
index 5e2dcd079..000000000
--- a/test/fixtures/tree/code-blocks.json
+++ /dev/null
@@ -1,188 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "code block on the first line",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 2,
-          "offset": 31
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Regular text.",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 32
-            },
-            "end": {
-              "line": 3,
-              "column": 14,
-              "offset": 45
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 32
-        },
-        "end": {
-          "line": 3,
-          "column": 14,
-          "offset": 45
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "code block indented by spaces",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 47
-        },
-        "end": {
-          "line": 5,
-          "column": 34,
-          "offset": 80
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Regular text.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 82
-            },
-            "end": {
-              "line": 7,
-              "column": 14,
-              "offset": 95
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 82
-        },
-        "end": {
-          "line": 7,
-          "column": 14,
-          "offset": 95
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "the lines in this block  \nall contain trailing spaces  ",
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 97
-        },
-        "end": {
-          "line": 10,
-          "column": 31,
-          "offset": 154
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Regular Text.",
-          "position": {
-            "start": {
-              "line": 12,
-              "column": 1,
-              "offset": 156
-            },
-            "end": {
-              "line": 12,
-              "column": 14,
-              "offset": 169
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 156
-        },
-        "end": {
-          "line": 12,
-          "column": 14,
-          "offset": 169
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "code block on the last line",
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 171
-        },
-        "end": {
-          "line": 14,
-          "column": 29,
-          "offset": 199
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 15,
-      "column": 1,
-      "offset": 200
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-blocks.output.fences.json b/test/fixtures/tree/code-blocks.output.fences.json
deleted file mode 100644
index 83b6321b7..000000000
--- a/test/fixtures/tree/code-blocks.output.fences.json
+++ /dev/null
@@ -1,68 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "A code block using fences:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 27,
-              "offset": 26
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 27,
-          "offset": 26
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "alert('Hello World!');",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 28
-        },
-        "end": {
-          "line": 5,
-          "column": 4,
-          "offset": 58
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 59
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-blocks.output.json b/test/fixtures/tree/code-blocks.output.json
deleted file mode 100644
index 50466d216..000000000
--- a/test/fixtures/tree/code-blocks.output.json
+++ /dev/null
@@ -1,68 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "A code block NOT using fences:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 31,
-              "offset": 30
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 31,
-          "offset": 30
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "alert('Hello World!');",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 32
-        },
-        "end": {
-          "line": 3,
-          "column": 27,
-          "offset": 58
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 59
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-inline-whitespace.json b/test/fixtures/tree/code-inline-whitespace.json
deleted file mode 100644
index 945a98574..000000000
--- a/test/fixtures/tree/code-inline-whitespace.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Markdown strips regular whitespaces: ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 38,
-              "offset": 37
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "  hello  ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 38,
-              "offset": 37
-            },
-            "end": {
-              "line": 1,
-              "column": 51,
-              "offset": 50
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "\nIncluding tabs: ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 51,
-              "offset": 50
-            },
-            "end": {
-              "line": 2,
-              "column": 17,
-              "offset": 67
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\thello\t",
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 17,
-              "offset": 67
-            },
-            "end": {
-              "line": 2,
-              "column": 26,
-              "offset": 76
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "\nHowever it preserves non-breaking whitespaces: ",
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 26,
-              "offset": 76
-            },
-            "end": {
-              "line": 3,
-              "column": 48,
-              "offset": 124
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "   hello   ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 48,
-              "offset": 124
-            },
-            "end": {
-              "line": 3,
-              "column": 61,
-              "offset": 137
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 61,
-          "offset": 137
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 138
-    }
-  }
-}
diff --git a/test/fixtures/tree/code-spans.json b/test/fixtures/tree/code-spans.json
deleted file mode 100644
index 5657145aa..000000000
--- a/test/fixtures/tree/code-spans.json
+++ /dev/null
@@ -1,798 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "inlineCode",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 34,
-              "offset": 33
-            },
-            "end": {
-              "line": 1,
-              "column": 38,
-              "offset": 37
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 38,
-          "offset": 37
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Fix for backticks within HTML tag: ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 39
-            },
-            "end": {
-              "line": 3,
-              "column": 36,
-              "offset": 74
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 36,
-              "offset": 74
-            },
-            "end": {
-              "line": 3,
-              "column": 57,
-              "offset": 95
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "like this",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 57,
-              "offset": 95
-            },
-            "end": {
-              "line": 3,
-              "column": 66,
-              "offset": 104
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 66,
-              "offset": 104
-            },
-            "end": {
-              "line": 3,
-              "column": 73,
-              "offset": 111
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 39
-        },
-        "end": {
-          "line": 3,
-          "column": 73,
-          "offset": 111
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here's how you put ",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 113
-            },
-            "end": {
-              "line": 5,
-              "column": 20,
-              "offset": 132
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "`backticks`",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 20,
-              "offset": 132
-            },
-            "end": {
-              "line": 5,
-              "column": 37,
-              "offset": 149
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": " in a code span.",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 37,
-              "offset": 149
-            },
-            "end": {
-              "line": 5,
-              "column": 53,
-              "offset": 165
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 113
-        },
-        "end": {
-          "line": 5,
-          "column": 53,
-          "offset": 165
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Empty code spans are not supported: ``.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 167
-            },
-            "end": {
-              "line": 7,
-              "column": 40,
-              "offset": 206
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 167
-        },
-        "end": {
-          "line": 7,
-          "column": 40,
-          "offset": 206
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here’s an example, ",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 208
-            },
-            "end": {
-              "line": 9,
-              "column": 20,
-              "offset": 227
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "foo ` bar ",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 20,
-              "offset": 227
-            },
-            "end": {
-              "line": 9,
-              "column": 36,
-              "offset": 243
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 36,
-              "offset": 243
-            },
-            "end": {
-              "line": 9,
-              "column": 37,
-              "offset": 244
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 208
-        },
-        "end": {
-          "line": 9,
-          "column": 37,
-          "offset": 244
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "And here, ",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 246
-            },
-            "end": {
-              "line": 11,
-              "column": 11,
-              "offset": 256
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "``",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 11,
-              "offset": 256
-            },
-            "end": {
-              "line": 11,
-              "column": 17,
-              "offset": 262
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 17,
-              "offset": 262
-            },
-            "end": {
-              "line": 11,
-              "column": 18,
-              "offset": 263
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 246
-        },
-        "end": {
-          "line": 11,
-          "column": 18,
-          "offset": 263
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "inlineCode",
-          "value": "// this is also inline code",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 1,
-              "offset": 265
-            },
-            "end": {
-              "line": 15,
-              "column": 3,
-              "offset": 298
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 265
-        },
-        "end": {
-          "line": 15,
-          "column": 3,
-          "offset": 298
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "So is this ",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 300
-            },
-            "end": {
-              "line": 17,
-              "column": 12,
-              "offset": 311
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "foo   bar\n  baz",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 12,
-              "offset": 311
-            },
-            "end": {
-              "line": 18,
-              "column": 7,
-              "offset": 328
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 7,
-              "offset": 328
-            },
-            "end": {
-              "line": 18,
-              "column": 8,
-              "offset": 329
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 300
-        },
-        "end": {
-          "line": 18,
-          "column": 8,
-          "offset": 329
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "And this ",
-          "position": {
-            "start": {
-              "line": 20,
-              "column": 1,
-              "offset": 331
-            },
-            "end": {
-              "line": 20,
-              "column": 10,
-              "offset": 340
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "foo `` bar",
-          "position": {
-            "start": {
-              "line": 20,
-              "column": 10,
-              "offset": 340
-            },
-            "end": {
-              "line": 20,
-              "column": 22,
-              "offset": 352
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 20,
-          "column": 1,
-          "offset": 331
-        },
-        "end": {
-          "line": 20,
-          "column": 22,
-          "offset": 352
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "And ",
-          "position": {
-            "start": {
-              "line": 22,
-              "column": 1,
-              "offset": 354
-            },
-            "end": {
-              "line": 22,
-              "column": 5,
-              "offset": 358
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "this\\",
-          "position": {
-            "start": {
-              "line": 22,
-              "column": 5,
-              "offset": 358
-            },
-            "end": {
-              "line": 22,
-              "column": 12,
-              "offset": 365
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "but this is text`.",
-          "position": {
-            "start": {
-              "line": 22,
-              "column": 12,
-              "offset": 365
-            },
-            "end": {
-              "line": 22,
-              "column": 30,
-              "offset": 383
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 22,
-          "column": 1,
-          "offset": 354
-        },
-        "end": {
-          "line": 22,
-          "column": 30,
-          "offset": 383
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Whitespace only: ",
-          "position": {
-            "start": {
-              "line": 24,
-              "column": 1,
-              "offset": 385
-            },
-            "end": {
-              "line": 24,
-              "column": 18,
-              "offset": 402
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": " ",
-          "position": {
-            "start": {
-              "line": 24,
-              "column": 18,
-              "offset": 402
-            },
-            "end": {
-              "line": 24,
-              "column": 21,
-              "offset": 405
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 24,
-              "column": 21,
-              "offset": 405
-            },
-            "end": {
-              "line": 24,
-              "column": 22,
-              "offset": 406
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 24,
-          "column": 1,
-          "offset": 385
-        },
-        "end": {
-          "line": 24,
-          "column": 22,
-          "offset": 406
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Whitespace only: ",
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 1,
-              "offset": 408
-            },
-            "end": {
-              "line": 26,
-              "column": 18,
-              "offset": 425
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "    ",
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 18,
-              "offset": 425
-            },
-            "end": {
-              "line": 26,
-              "column": 24,
-              "offset": 431
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 24,
-              "offset": 431
-            },
-            "end": {
-              "line": 26,
-              "column": 25,
-              "offset": 432
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 26,
-          "column": 1,
-          "offset": 408
-        },
-        "end": {
-          "line": 26,
-          "column": 25,
-          "offset": 432
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Whitespace only: ",
-          "position": {
-            "start": {
-              "line": 28,
-              "column": 1,
-              "offset": 434
-            },
-            "end": {
-              "line": 28,
-              "column": 18,
-              "offset": 451
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "\n",
-          "position": {
-            "start": {
-              "line": 28,
-              "column": 18,
-              "offset": 451
-            },
-            "end": {
-              "line": 29,
-              "column": 2,
-              "offset": 454
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 29,
-              "column": 2,
-              "offset": 454
-            },
-            "end": {
-              "line": 29,
-              "column": 3,
-              "offset": 455
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 28,
-          "column": 1,
-          "offset": 434
-        },
-        "end": {
-          "line": 29,
-          "column": 3,
-          "offset": 455
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 30,
-      "column": 1,
-      "offset": 456
-    }
-  }
-}
diff --git a/test/fixtures/tree/def-blocks.json b/test/fixtures/tree/def-blocks.json
deleted file mode 100644
index 8c1db9cbb..000000000
--- a/test/fixtures/tree/def-blocks.json
+++ /dev/null
@@ -1,344 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "hello\n[1]: hello",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 2,
-                  "column": 13,
-                  "offset": 20
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 2,
-              "column": 13,
-              "offset": 20
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 13,
-          "offset": 20
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 22
-        },
-        "end": {
-          "line": 4,
-          "column": 6,
-          "offset": 27
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "hello\n[2]: hello",
-              "position": {
-                "start": {
-                  "line": 6,
-                  "column": 3,
-                  "offset": 31
-                },
-                "end": {
-                  "line": 7,
-                  "column": 11,
-                  "offset": 47
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 3,
-              "offset": 31
-            },
-            "end": {
-              "line": 7,
-              "column": 11,
-              "offset": 47
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 29
-        },
-        "end": {
-          "line": 7,
-          "column": 11,
-          "offset": 47
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "hello",
-                  "position": {
-                    "start": {
-                      "line": 10,
-                      "column": 3,
-                      "offset": 52
-                    },
-                    "end": {
-                      "line": 10,
-                      "column": 8,
-                      "offset": 57
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 10,
-                  "column": 3,
-                  "offset": 52
-                },
-                "end": {
-                  "line": 10,
-                  "column": 8,
-                  "offset": 57
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 50
-            },
-            "end": {
-              "line": 10,
-              "column": 8,
-              "offset": 57
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "definition",
-              "identifier": "3",
-              "label": "3",
-              "title": null,
-              "url": "hello",
-              "position": {
-                "start": {
-                  "line": 11,
-                  "column": 3,
-                  "offset": 60
-                },
-                "end": {
-                  "line": 11,
-                  "column": 13,
-                  "offset": 70
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 58
-            },
-            "end": {
-              "line": 11,
-              "column": 13,
-              "offset": 70
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "hello\n[4]: hello",
-                  "position": {
-                    "start": {
-                      "line": 14,
-                      "column": 3,
-                      "offset": 75
-                    },
-                    "end": {
-                      "line": 15,
-                      "column": 11,
-                      "offset": 91
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 14,
-                  "column": 3,
-                  "offset": 75
-                },
-                "end": {
-                  "line": 15,
-                  "column": 11,
-                  "offset": 91
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 1,
-              "offset": 73
-            },
-            "end": {
-              "line": 15,
-              "column": 11,
-              "offset": 91
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 50
-        },
-        "end": {
-          "line": 15,
-          "column": 11,
-          "offset": 91
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "foo\nbar\n[1]: foo\nbar",
-              "position": {
-                "start": {
-                  "line": 18,
-                  "column": 3,
-                  "offset": 96
-                },
-                "end": {
-                  "line": 21,
-                  "column": 6,
-                  "offset": 120
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 3,
-              "offset": 96
-            },
-            "end": {
-              "line": 21,
-              "column": 6,
-              "offset": 120
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 94
-        },
-        "end": {
-          "line": 21,
-          "column": 6,
-          "offset": 120
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 22,
-      "column": 1,
-      "offset": 121
-    }
-  }
-}
diff --git a/test/fixtures/tree/definition-in-list-and-blockquote.json b/test/fixtures/tree/definition-in-list-and-blockquote.json
deleted file mode 100644
index 02c2aa667..000000000
--- a/test/fixtures/tree/definition-in-list-and-blockquote.json
+++ /dev/null
@@ -1,298 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "alpha",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            }
-          },
-          "label": "1",
-          "identifier": "1",
-          "referenceType": "full"
-        },
-        {
-          "type": "text",
-          "value": ", ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            },
-            "end": {
-              "line": 1,
-              "column": 13,
-              "offset": 12
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "bravo",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 14,
-                  "offset": 13
-                },
-                "end": {
-                  "line": 1,
-                  "column": 19,
-                  "offset": 18
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 13,
-              "offset": 12
-            },
-            "end": {
-              "line": 1,
-              "column": 23,
-              "offset": 22
-            }
-          },
-          "label": "2",
-          "identifier": "2",
-          "referenceType": "full"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 23,
-              "offset": 22
-            },
-            "end": {
-              "line": 1,
-              "column": 24,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 24,
-          "offset": 23
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Definition in list:",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 3,
-                      "offset": 27
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 22,
-                      "offset": 46
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 27
-                },
-                "end": {
-                  "line": 3,
-                  "column": 22,
-                  "offset": 46
-                }
-              }
-            },
-            {
-              "type": "definition",
-              "identifier": "1",
-              "label": "1",
-              "title": null,
-              "url": "alpha",
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 3,
-                  "offset": 50
-                },
-                "end": {
-                  "line": 5,
-                  "column": 13,
-                  "offset": 60
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 25
-            },
-            "end": {
-              "line": 5,
-              "column": 13,
-              "offset": 60
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 25
-        },
-        "end": {
-          "line": 5,
-          "column": 13,
-          "offset": 60
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Definition in blockquote:",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 3,
-                  "offset": 64
-                },
-                "end": {
-                  "line": 7,
-                  "column": 28,
-                  "offset": 89
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 3,
-              "offset": 64
-            },
-            "end": {
-              "line": 7,
-              "column": 28,
-              "offset": 89
-            }
-          }
-        },
-        {
-          "type": "definition",
-          "identifier": "2",
-          "label": "2",
-          "title": null,
-          "url": "bravo",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 3,
-              "offset": 94
-            },
-            "end": {
-              "line": 9,
-              "column": 13,
-              "offset": 104
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 62
-        },
-        "end": {
-          "line": 9,
-          "column": 13,
-          "offset": 104
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 10,
-      "column": 1,
-      "offset": 105
-    }
-  }
-}
diff --git a/test/fixtures/tree/definition-newline.json b/test/fixtures/tree/definition-newline.json
deleted file mode 100644
index 3430c632a..000000000
--- a/test/fixtures/tree/definition-newline.json
+++ /dev/null
@@ -1,200 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "definition",
-      "identifier": "baz",
-      "label": "baz",
-      "title": "\n",
-      "url": "/url",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 2,
-          "offset": 15
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "foo",
-      "label": "foo",
-      "title": "\n",
-      "url": "/url",
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 17
-        },
-        "end": {
-          "line": 5,
-          "column": 2,
-          "offset": 32
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "bar",
-      "label": "bar",
-      "title": "\n",
-      "url": "/url",
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 34
-        },
-        "end": {
-          "line": 8,
-          "column": 2,
-          "offset": 49
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "baz",
-      "label": "baz",
-      "title": "foo\nbar",
-      "url": "/url",
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 50
-        },
-        "end": {
-          "line": 10,
-          "column": 5,
-          "offset": 71
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "baz",
-      "label": "baz",
-      "title": "foo\nbar",
-      "url": "/url",
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 73
-        },
-        "end": {
-          "line": 13,
-          "column": 5,
-          "offset": 94
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "baz",
-      "label": "baz",
-      "title": "foo\nbar",
-      "url": "/url",
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 96
-        },
-        "end": {
-          "line": 16,
-          "column": 5,
-          "offset": 117
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "baz",
-              "position": {
-                "start": {
-                  "line": 18,
-                  "column": 2,
-                  "offset": 120
-                },
-                "end": {
-                  "line": 18,
-                  "column": 5,
-                  "offset": 123
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 1,
-              "offset": 119
-            },
-            "end": {
-              "line": 18,
-              "column": 6,
-              "offset": 124
-            }
-          },
-          "label": "baz",
-          "identifier": "baz",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ": /url 'foo",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 6,
-              "offset": 124
-            },
-            "end": {
-              "line": 18,
-              "column": 17,
-              "offset": 135
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 119
-        },
-        "end": {
-          "line": 18,
-          "column": 17,
-          "offset": 135
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 18,
-      "column": 17,
-      "offset": 135
-    }
-  }
-}
diff --git a/test/fixtures/tree/definition-unclosed-attribute.json b/test/fixtures/tree/definition-unclosed-attribute.json
deleted file mode 100644
index 9e5fbedde..000000000
--- a/test/fixtures/tree/definition-unclosed-attribute.json
+++ /dev/null
@@ -1,410 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[baz]: /url (there",
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 1
-            },
-            "end": {
-              "line": 2,
-              "column": 19,
-              "offset": 19
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 1
-        },
-        "end": {
-          "line": 2,
-          "column": 19,
-          "offset": 19
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[foo]: /url \"there",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 21
-            },
-            "end": {
-              "line": 4,
-              "column": 19,
-              "offset": 39
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 21
-        },
-        "end": {
-          "line": 4,
-          "column": 19,
-          "offset": 39
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[bar]: /url 'there",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 41
-            },
-            "end": {
-              "line": 6,
-              "column": 19,
-              "offset": 59
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 41
-        },
-        "end": {
-          "line": 6,
-          "column": 19,
-          "offset": 59
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[baz]: url (",
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 61
-            },
-            "end": {
-              "line": 8,
-              "column": 13,
-              "offset": 73
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 61
-        },
-        "end": {
-          "line": 8,
-          "column": 13,
-          "offset": 73
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[foo]: url \"",
-          "position": {
-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 75
-            },
-            "end": {
-              "line": 10,
-              "column": 13,
-              "offset": 87
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 75
-        },
-        "end": {
-          "line": 10,
-          "column": 13,
-          "offset": 87
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[bar]: /url '",
-          "position": {
-            "start": {
-              "line": 12,
-              "column": 1,
-              "offset": 89
-            },
-            "end": {
-              "line": 12,
-              "column": 14,
-              "offset": 102
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 89
-        },
-        "end": {
-          "line": 12,
-          "column": 14,
-          "offset": 102
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[baz]: ",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 1,
-              "offset": 104
-            },
-            "end": {
-              "line": 14,
-              "column": 8,
-              "offset": 111
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 8,
-              "offset": 111
-            },
-            "end": {
-              "line": 14,
-              "column": 13,
-              "offset": 116
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "(",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 13,
-              "offset": 116
-            },
-            "end": {
-              "line": 14,
-              "column": 14,
-              "offset": 117
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 104
-        },
-        "end": {
-          "line": 14,
-          "column": 14,
-          "offset": 117
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[foo]: ",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 1,
-              "offset": 119
-            },
-            "end": {
-              "line": 16,
-              "column": 8,
-              "offset": 126
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 8,
-              "offset": 126
-            },
-            "end": {
-              "line": 16,
-              "column": 13,
-              "offset": 131
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "\"",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 13,
-              "offset": 131
-            },
-            "end": {
-              "line": 16,
-              "column": 14,
-              "offset": 132
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 119
-        },
-        "end": {
-          "line": 16,
-          "column": 14,
-          "offset": 132
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[bar]: ",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 1,
-              "offset": 134
-            },
-            "end": {
-              "line": 18,
-              "column": 8,
-              "offset": 141
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 8,
-              "offset": 141
-            },
-            "end": {
-              "line": 18,
-              "column": 13,
-              "offset": 146
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "'",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 13,
-              "offset": 146
-            },
-            "end": {
-              "line": 18,
-              "column": 14,
-              "offset": 147
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 134
-        },
-        "end": {
-          "line": 18,
-          "column": 14,
-          "offset": 147
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 18,
-      "column": 14,
-      "offset": 147
-    }
-  }
-}
diff --git a/test/fixtures/tree/definition-unclosed.json b/test/fixtures/tree/definition-unclosed.json
deleted file mode 100644
index cc15242f9..000000000
--- a/test/fixtures/tree/definition-unclosed.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[foo]:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 7,
-          "offset": 6
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[bar]: Already linked: http://example.com/.
",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 78,
-          "offset": 77
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Already linked: ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 79
-            },
-            "end": {
-              "line": 3,
-              "column": 17,
-              "offset": 95
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "http://example.com/",
-          "children": [
-            {
-              "type": "text",
-              "value": "http://example.com/",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 18,
-                  "offset": 96
-                },
-                "end": {
-                  "line": 3,
-                  "column": 37,
-                  "offset": 115
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 17,
-              "offset": 95
-            },
-            "end": {
-              "line": 3,
-              "column": 59,
-              "offset": 137
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 59,
-              "offset": 137
-            },
-            "end": {
-              "line": 3,
-              "column": 60,
-              "offset": 138
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 79
-        },
-        "end": {
-          "line": 3,
-          "column": 60,
-          "offset": 138
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Already linked: ",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 140
-            },
-            "end": {
-              "line": 5,
-              "column": 17,
-              "offset": 156
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 17,
-              "offset": 156
-            },
-            "end": {
-              "line": 5,
-              "column": 47,
-              "offset": 186
-            }
-          }
-        },
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "text",
-              "value": "http://example.com/",
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 49,
-                  "offset": 188
-                },
-                "end": {
-                  "line": 5,
-                  "column": 68,
-                  "offset": 207
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 47,
-              "offset": 186
-            },
-            "end": {
-              "line": 5,
-              "column": 70,
-              "offset": 209
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 70,
-              "offset": 209
-            },
-            "end": {
-              "line": 5,
-              "column": 74,
-              "offset": 213
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 74,
-              "offset": 213
-            },
-            "end": {
-              "line": 5,
-              "column": 75,
-              "offset": 214
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 140
-        },
-        "end": {
-          "line": 5,
-          "column": 75,
-          "offset": 214
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 215
-    }
-  }
-}
diff --git a/test/fixtures/tree/emphasis-empty.json b/test/fixtures/tree/emphasis-empty.json
deleted file mode 100644
index e22237f19..000000000
--- a/test/fixtures/tree/emphasis-empty.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Hello ** ** world.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 19,
-              "offset": 18
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 19,
-          "offset": 18
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Hello __\t__ world.",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 20
-            },
-            "end": {
-              "line": 3,
-              "column": 19,
-              "offset": 38
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 20
-        },
-        "end": {
-          "line": 3,
-          "column": 19,
-          "offset": 38
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Hello *\t* world.",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 40
-            },
-            "end": {
-              "line": 5,
-              "column": 17,
-              "offset": 56
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 40
-        },
-        "end": {
-          "line": 5,
-          "column": 17,
-          "offset": 56
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Hello _\t_ world.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 58
-            },
-            "end": {
-              "line": 7,
-              "column": 17,
-              "offset": 74
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 58
-        },
-        "end": {
-          "line": 7,
-          "column": 17,
-          "offset": 74
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 8,
-      "column": 1,
-      "offset": 75
-    }
-  }
-}
diff --git a/test/fixtures/tree/emphasis-escaped-final-marker.json b/test/fixtures/tree/emphasis-escaped-final-marker.json
deleted file mode 100644
index 775723f6c..000000000
--- a/test/fixtures/tree/emphasis-escaped-final-marker.json
+++ /dev/null
@@ -1,215 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "*bar*",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 7,
-          "offset": 6
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "*",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 8
-            },
-            "end": {
-              "line": 3,
-              "column": 2,
-              "offset": 9
-            }
-          }
-        },
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "bar*",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 10
-                },
-                "end": {
-                  "line": 3,
-                  "column": 8,
-                  "offset": 15
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 2,
-              "offset": 9
-            },
-            "end": {
-              "line": 3,
-              "column": 9,
-              "offset": 16
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 8
-        },
-        "end": {
-          "line": 3,
-          "column": 9,
-          "offset": 16
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "_bar_",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 18
-            },
-            "end": {
-              "line": 5,
-              "column": 7,
-              "offset": 24
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 18
-        },
-        "end": {
-          "line": 5,
-          "column": 7,
-          "offset": 24
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "_",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 26
-            },
-            "end": {
-              "line": 7,
-              "column": 2,
-              "offset": 27
-            }
-          }
-        },
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "bar_",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 3,
-                  "offset": 28
-                },
-                "end": {
-                  "line": 7,
-                  "column": 8,
-                  "offset": 33
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 2,
-              "offset": 27
-            },
-            "end": {
-              "line": 7,
-              "column": 9,
-              "offset": 34
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 26
-        },
-        "end": {
-          "line": 7,
-          "column": 9,
-          "offset": 34
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 8,
-      "column": 1,
-      "offset": 35
-    }
-  }
-}
diff --git a/test/fixtures/tree/emphasis-internal.json b/test/fixtures/tree/emphasis-internal.json
deleted file mode 100644
index 078fa8976..000000000
--- a/test/fixtures/tree/emphasis-internal.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "These words should_not_be_emphasized.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 38,
-              "offset": 37
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 38,
-          "offset": 37
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 38
-    }
-  }
-}
diff --git a/test/fixtures/tree/emphasis.output.emphasis=-asterisk-.strong=_.json b/test/fixtures/tree/emphasis.output.emphasis=-asterisk-.strong=_.json
deleted file mode 100644
index ebb65e2c8..000000000
--- a/test/fixtures/tree/emphasis.output.emphasis=-asterisk-.strong=_.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "emphasis",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 10,
-                  "offset": 9
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            },
-            "end": {
-              "line": 1,
-              "column": 12,
-              "offset": 11
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 12,
-          "offset": 11
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "text",
-              "value": "strong",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 15
-                },
-                "end": {
-                  "line": 3,
-                  "column": 9,
-                  "offset": 21
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 13
-            },
-            "end": {
-              "line": 3,
-              "column": 11,
-              "offset": 23
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 11,
-              "offset": 23
-            },
-            "end": {
-              "line": 3,
-              "column": 12,
-              "offset": 24
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 13
-        },
-        "end": {
-          "line": 3,
-          "column": 12,
-          "offset": 24
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 25
-    }
-  }
-}
diff --git a/test/fixtures/tree/emphasis.output.emphasis=_.strong=-asterisk-.json b/test/fixtures/tree/emphasis.output.emphasis=_.strong=-asterisk-.json
deleted file mode 100644
index ebb65e2c8..000000000
--- a/test/fixtures/tree/emphasis.output.emphasis=_.strong=-asterisk-.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "emphasis",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 10,
-                  "offset": 9
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            },
-            "end": {
-              "line": 1,
-              "column": 12,
-              "offset": 11
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 12,
-          "offset": 11
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "text",
-              "value": "strong",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 15
-                },
-                "end": {
-                  "line": 3,
-                  "column": 9,
-                  "offset": 21
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 13
-            },
-            "end": {
-              "line": 3,
-              "column": 11,
-              "offset": 23
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 11,
-              "offset": 23
-            },
-            "end": {
-              "line": 3,
-              "column": 12,
-              "offset": 24
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 13
-        },
-        "end": {
-          "line": 3,
-          "column": 12,
-          "offset": 24
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 25
-    }
-  }
-}
diff --git a/test/fixtures/tree/empty.json b/test/fixtures/tree/empty.json
deleted file mode 100644
index 49ccd7eb5..000000000
--- a/test/fixtures/tree/empty.json
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-  "type": "root",
-  "children": [],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    }
-  }
-}
diff --git a/test/fixtures/tree/entities-advanced.json b/test/fixtures/tree/entities-advanced.json
deleted file mode 100644
index cc45e17a7..000000000
--- a/test/fixtures/tree/entities-advanced.json
+++ /dev/null
@@ -1,862 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "However, &MadeUpEntities; are kept in the document.",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 54,
-                  "offset": 53
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 54,
-              "offset": 53
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 54,
-          "offset": 53
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Entities even work in the language flag of fenced code blocks:",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 57
-                },
-                "end": {
-                  "line": 3,
-                  "column": 65,
-                  "offset": 119
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 3,
-              "offset": 57
-            },
-            "end": {
-              "line": 3,
-              "column": 65,
-              "offset": 119
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 55
-        },
-        "end": {
-          "line": 3,
-          "column": 65,
-          "offset": 119
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "code",
-          "lang": "some©language",
-          "meta": null,
-          "value": "alert('Hello');",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 3,
-              "offset": 123
-            },
-            "end": {
-              "line": 7,
-              "column": 6,
-              "offset": 168
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 121
-        },
-        "end": {
-          "line": 7,
-          "column": 6,
-          "offset": 168
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "And in an auto-link: ",
-              "position": {
-                "start": {
-                  "line": 9,
-                  "column": 3,
-                  "offset": 172
-                },
-                "end": {
-                  "line": 9,
-                  "column": 24,
-                  "offset": 193
-                }
-              }
-            },
-            {
-              "type": "link",
-              "title": null,
-              "url": "http://example©xample.com",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "http://example©xample.com",
-                  "position": {
-                    "start": {
-                      "line": 9,
-                      "column": 25,
-                      "offset": 194
-                    },
-                    "end": {
-                      "line": 9,
-                      "column": 55,
-                      "offset": 224
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 9,
-                  "column": 24,
-                  "offset": 193
-                },
-                "end": {
-                  "line": 9,
-                  "column": 56,
-                  "offset": 225
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 3,
-              "offset": 172
-            },
-            "end": {
-              "line": 9,
-              "column": 56,
-              "offset": 225
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 170
-        },
-        "end": {
-          "line": 9,
-          "column": 56,
-          "offset": 225
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Foo and bar and http://example©xample.com and baz.",
-              "position": {
-                "start": {
-                  "line": 11,
-                  "column": 3,
-                  "offset": 229
-                },
-                "end": {
-                  "line": 11,
-                  "column": 58,
-                  "offset": 284
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 3,
-              "offset": 229
-            },
-            "end": {
-              "line": 11,
-              "column": 58,
-              "offset": 284
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 227
-        },
-        "end": {
-          "line": 11,
-          "column": 58,
-          "offset": 284
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Or in ",
-              "position": {
-                "start": {
-                  "line": 13,
-                  "column": 3,
-                  "offset": 288
-                },
-                "end": {
-                  "line": 13,
-                  "column": 9,
-                  "offset": 294
-                }
-              }
-            },
-            {
-              "type": "link",
-              "title": "in some pl©ce",
-              "url": "~/some©file",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "l©nks",
-                  "position": {
-                    "start": {
-                      "line": 13,
-                      "column": 10,
-                      "offset": 295
-                    },
-                    "end": {
-                      "line": 13,
-                      "column": 20,
-                      "offset": 305
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 13,
-                  "column": 9,
-                  "offset": 294
-                },
-                "end": {
-                  "line": 14,
-                  "column": 43,
-                  "offset": 350
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 3,
-              "offset": 288
-            },
-            "end": {
-              "line": 14,
-              "column": 43,
-              "offset": 350
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 286
-        },
-        "end": {
-          "line": 14,
-          "column": 43,
-          "offset": 350
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Or in ",
-              "position": {
-                "start": {
-                  "line": 16,
-                  "column": 3,
-                  "offset": 354
-                },
-                "end": {
-                  "line": 16,
-                  "column": 9,
-                  "offset": 360
-                }
-              }
-            },
-            {
-              "type": "link",
-              "title": "in some pl©ce",
-              "url": "~/some©file",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "l©lnks",
-                  "position": {
-                    "start": {
-                      "line": 16,
-                      "column": 10,
-                      "offset": 361
-                    },
-                    "end": {
-                      "line": 16,
-                      "column": 21,
-                      "offset": 372
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 16,
-                  "column": 9,
-                  "offset": 360
-                },
-                "end": {
-                  "line": 18,
-                  "column": 26,
-                  "offset": 423
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 3,
-              "offset": 354
-            },
-            "end": {
-              "line": 18,
-              "column": 26,
-              "offset": 423
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 352
-        },
-        "end": {
-          "line": 18,
-          "column": 26,
-          "offset": 423
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Or in ",
-              "position": {
-                "start": {
-                  "line": 20,
-                  "column": 3,
-                  "offset": 427
-                },
-                "end": {
-                  "line": 20,
-                  "column": 9,
-                  "offset": 433
-                }
-              }
-            },
-            {
-              "type": "image",
-              "title": "in some pl©ce",
-              "url": "~/some©file",
-              "alt": "\nl©nks\n",
-              "position": {
-                "start": {
-                  "line": 20,
-                  "column": 9,
-                  "offset": 433
-                },
-                "end": {
-                  "line": 23,
-                  "column": 43,
-                  "offset": 498
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 20,
-              "column": 3,
-              "offset": 427
-            },
-            "end": {
-              "line": 23,
-              "column": 43,
-              "offset": 498
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 20,
-          "column": 1,
-          "offset": 425
-        },
-        "end": {
-          "line": 23,
-          "column": 43,
-          "offset": 498
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 25,
-          "column": 1,
-          "offset": 500
-        },
-        "end": {
-          "line": 25,
-          "column": 4,
-          "offset": 503
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Or in ",
-              "position": {
-                "start": {
-                  "line": 27,
-                  "column": 3,
-                  "offset": 507
-                },
-                "end": {
-                  "line": 27,
-                  "column": 9,
-                  "offset": 513
-                }
-              }
-            },
-            {
-              "type": "image",
-              "title": "in some pl©ce",
-              "url": "~/some©file",
-              "alt": "l©lnks",
-              "position": {
-                "start": {
-                  "line": 27,
-                  "column": 9,
-                  "offset": 513
-                },
-                "end": {
-                  "line": 29,
-                  "column": 26,
-                  "offset": 577
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 27,
-              "column": 3,
-              "offset": 507
-            },
-            "end": {
-              "line": 29,
-              "column": 26,
-              "offset": 577
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 27,
-          "column": 1,
-          "offset": 505
-        },
-        "end": {
-          "line": 29,
-          "column": 26,
-          "offset": 577
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "Or in ![\nl©nks\n][12]",
-              "position": {
-                "start": {
-                  "line": 31,
-                  "column": 3,
-                  "offset": 581
-                },
-                "end": {
-                  "line": 33,
-                  "column": 8,
-                  "offset": 612
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 31,
-              "column": 3,
-              "offset": 581
-            },
-            "end": {
-              "line": 33,
-              "column": 8,
-              "offset": 612
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 31,
-          "column": 1,
-          "offset": 579
-        },
-        "end": {
-          "line": 33,
-          "column": 8,
-          "offset": 612
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "definition",
-          "identifier": "1",
-          "label": "1",
-          "title": "in some\npl©ce",
-          "url": "http://example©xample.com",
-          "position": {
-            "start": {
-              "line": 35,
-              "column": 3,
-              "offset": 616
-            },
-            "end": {
-              "line": 36,
-              "column": 14,
-              "offset": 674
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 35,
-          "column": 1,
-          "offset": 614
-        },
-        "end": {
-          "line": 36,
-          "column": 14,
-          "offset": 674
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "definition",
-          "identifier": "1",
-          "label": "\n  1\n",
-          "title": "in some\npl©ce",
-          "url": "http://example©xample.com",
-          "position": {
-            "start": {
-              "line": 38,
-              "column": 3,
-              "offset": 678
-            },
-            "end": {
-              "line": 41,
-              "column": 14,
-              "offset": 744
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 38,
-          "column": 1,
-          "offset": 676
-        },
-        "end": {
-          "line": 41,
-          "column": 14,
-          "offset": 744
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 43,
-          "column": 1,
-          "offset": 746
-        },
-        "end": {
-          "line": 43,
-          "column": 4,
-          "offset": 749
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "But, entities are not interpreted in ",
-              "position": {
-                "start": {
-                  "line": 45,
-                  "column": 3,
-                  "offset": 753
-                },
-                "end": {
-                  "line": 45,
-                  "column": 40,
-                  "offset": 790
-                }
-              }
-            },
-            {
-              "type": "inlineCode",
-              "value": "inline cöde",
-              "position": {
-                "start": {
-                  "line": 45,
-                  "column": 40,
-                  "offset": 790
-                },
-                "end": {
-                  "line": 45,
-                  "column": 58,
-                  "offset": 808
-                }
-              }
-            },
-            {
-              "type": "text",
-              "value": ", or in\ncode blocks:",
-              "position": {
-                "start": {
-                  "line": 45,
-                  "column": 58,
-                  "offset": 808
-                },
-                "end": {
-                  "line": 46,
-                  "column": 15,
-                  "offset": 830
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 45,
-              "column": 3,
-              "offset": 753
-            },
-            "end": {
-              "line": 46,
-              "column": 15,
-              "offset": 830
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 45,
-          "column": 1,
-          "offset": 751
-        },
-        "end": {
-          "line": 46,
-          "column": 15,
-          "offset": 830
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "code",
-          "lang": null,
-          "meta": null,
-          "value": "CÖDE block.",
-          "position": {
-            "start": {
-              "line": 48,
-              "column": 3,
-              "offset": 834
-            },
-            "end": {
-              "line": 48,
-              "column": 23,
-              "offset": 854
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 48,
-          "column": 1,
-          "offset": 832
-        },
-        "end": {
-          "line": 48,
-          "column": 23,
-          "offset": 854
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 49,
-      "column": 1,
-      "offset": 855
-    }
-  }
-}
diff --git a/test/fixtures/tree/entities.json b/test/fixtures/tree/entities.json
deleted file mode 100644
index 22eb9d7a3..000000000
--- a/test/fixtures/tree/entities.json
+++ /dev/null
@@ -1,336 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Lots of entities are supported in mdast:  , &, ©, Æ,\nĎ, ¾, ℋ, ⅆ,\n∲, &c.  Even some entities with a missing\nterminal semicolon are parsed correctly (as per the HTML5 spec):\nÿ, á, ©, and &.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 5,
-              "column": 33,
-              "offset": 290
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 5,
-          "column": 33,
-          "offset": 290
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "However, &MadeUpEntities; are kept in the document.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 292
-            },
-            "end": {
-              "line": 7,
-              "column": 52,
-              "offset": 343
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 292
-        },
-        "end": {
-          "line": 7,
-          "column": 52,
-          "offset": 343
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Entities even work in the language flag of fenced code blocks:",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 345
-            },
-            "end": {
-              "line": 9,
-              "column": 63,
-              "offset": 407
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 345
-        },
-        "end": {
-          "line": 9,
-          "column": 63,
-          "offset": 407
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "some—language",
-      "meta": null,
-      "value": "alert('Hello');",
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 409
-        },
-        "end": {
-          "line": 13,
-          "column": 4,
-          "offset": 451
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Or in ",
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 1,
-              "offset": 453
-            },
-            "end": {
-              "line": 15,
-              "column": 7,
-              "offset": 459
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": "in some plæce",
-          "url": "~/some—file",
-          "children": [
-            {
-              "type": "text",
-              "value": "línks",
-              "position": {
-                "start": {
-                  "line": 15,
-                  "column": 8,
-                  "offset": 460
-                },
-                "end": {
-                  "line": 15,
-                  "column": 20,
-                  "offset": 472
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 7,
-              "offset": 459
-            },
-            "end": {
-              "line": 15,
-              "column": 62,
-              "offset": 514
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 453
-        },
-        "end": {
-          "line": 15,
-          "column": 62,
-          "offset": 514
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Or in ",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 516
-            },
-            "end": {
-              "line": 17,
-              "column": 7,
-              "offset": 522
-            }
-          }
-        },
-        {
-          "type": "image",
-          "title": "© Someone",
-          "url": "~/an–image.png",
-          "alt": "ímages",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 7,
-              "offset": 522
-            },
-            "end": {
-              "line": 17,
-              "column": 62,
-              "offset": 577
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 516
-        },
-        "end": {
-          "line": 17,
-          "column": 62,
-          "offset": 577
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "But, entities are not interpreted in ",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 1,
-              "offset": 579
-            },
-            "end": {
-              "line": 19,
-              "column": 38,
-              "offset": 616
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "inline cöde",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 38,
-              "offset": 616
-            },
-            "end": {
-              "line": 19,
-              "column": 56,
-              "offset": 634
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ", or in\ncode blocks:",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 56,
-              "offset": 634
-            },
-            "end": {
-              "line": 20,
-              "column": 13,
-              "offset": 654
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 1,
-          "offset": 579
-        },
-        "end": {
-          "line": 20,
-          "column": 13,
-          "offset": 654
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "CÖDE block.",
-      "position": {
-        "start": {
-          "line": 22,
-          "column": 1,
-          "offset": 656
-        },
-        "end": {
-          "line": 22,
-          "column": 18,
-          "offset": 673
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 23,
-      "column": 1,
-      "offset": 674
-    }
-  }
-}
diff --git a/test/fixtures/tree/escaped-angles.json b/test/fixtures/tree/escaped-angles.json
deleted file mode 100644
index 2348dc368..000000000
--- a/test/fixtures/tree/escaped-angles.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": ">",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 3,
-          "offset": 2
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 3
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code-empty.json b/test/fixtures/tree/fenced-code-empty.json
deleted file mode 100644
index 4277a2b72..000000000
--- a/test/fixtures/tree/fenced-code-empty.json
+++ /dev/null
@@ -1,221 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Normal with language tag:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 26,
-              "offset": 25
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 26,
-          "offset": 25
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "js",
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 27
-        },
-        "end": {
-          "line": 4,
-          "column": 4,
-          "offset": 36
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With white space:",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 38
-            },
-            "end": {
-              "line": 6,
-              "column": 18,
-              "offset": 55
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 38
-        },
-        "end": {
-          "line": 6,
-          "column": 18,
-          "offset": 55
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "bash",
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 57
-        },
-        "end": {
-          "line": 9,
-          "column": 4,
-          "offset": 69
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With very long fences:",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 71
-            },
-            "end": {
-              "line": 11,
-              "column": 23,
-              "offset": 93
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 71
-        },
-        "end": {
-          "line": 11,
-          "column": 23,
-          "offset": 93
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 95
-        },
-        "end": {
-          "line": 14,
-          "column": 7,
-          "offset": 108
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With nothing:",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 1,
-              "offset": 110
-            },
-            "end": {
-              "line": 16,
-              "column": 14,
-              "offset": 123
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 110
-        },
-        "end": {
-          "line": 16,
-          "column": 14,
-          "offset": 123
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 125
-        },
-        "end": {
-          "line": 19,
-          "column": 4,
-          "offset": 132
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 20,
-      "column": 1,
-      "offset": 133
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code-info-string.json b/test/fixtures/tree/fenced-code-info-string.json
deleted file mode 100644
index faf93a1a8..000000000
--- a/test/fixtures/tree/fenced-code-info-string.json
+++ /dev/null
@@ -1,374 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Normal with language tag:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 26,
-              "offset": 25
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 26,
-          "offset": 25
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "js",
-      "meta": "this is an info string",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 27
-        },
-        "end": {
-          "line": 4,
-          "column": 4,
-          "offset": 59
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With white space:",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 61
-            },
-            "end": {
-              "line": 6,
-              "column": 18,
-              "offset": 78
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 61
-        },
-        "end": {
-          "line": 6,
-          "column": 18,
-          "offset": 78
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "bash",
-      "meta": "info",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 80
-        },
-        "end": {
-          "line": 9,
-          "column": 4,
-          "offset": 97
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With curly braces:",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 99
-            },
-            "end": {
-              "line": 11,
-              "column": 19,
-              "offset": 117
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 99
-        },
-        "end": {
-          "line": 11,
-          "column": 19,
-          "offset": 117
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "lang{info}",
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 119
-        },
-        "end": {
-          "line": 14,
-          "column": 7,
-          "offset": 142
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With nothing:",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 1,
-              "offset": 144
-            },
-            "end": {
-              "line": 16,
-              "column": 14,
-              "offset": 157
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 144
-        },
-        "end": {
-          "line": 16,
-          "column": 14,
-          "offset": 157
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 159
-        },
-        "end": {
-          "line": 19,
-          "column": 4,
-          "offset": 166
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With several streaks of white space:",
-          "position": {
-            "start": {
-              "line": 21,
-              "column": 1,
-              "offset": 168
-            },
-            "end": {
-              "line": 21,
-              "column": 37,
-              "offset": 204
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 21,
-          "column": 1,
-          "offset": 168
-        },
-        "end": {
-          "line": 21,
-          "column": 37,
-          "offset": 204
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "bash",
-      "meta": "info string",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 23,
-          "column": 1,
-          "offset": 206
-        },
-        "end": {
-          "line": 24,
-          "column": 4,
-          "offset": 230
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With tabs as white space:",
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 1,
-              "offset": 232
-            },
-            "end": {
-              "line": 26,
-              "column": 26,
-              "offset": 257
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 26,
-          "column": 1,
-          "offset": 232
-        },
-        "end": {
-          "line": 26,
-          "column": 26,
-          "offset": 257
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "bash",
-      "meta": "info",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 28,
-          "column": 1,
-          "offset": 259
-        },
-        "end": {
-          "line": 29,
-          "column": 4,
-          "offset": 277
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With spaces as white space:",
-          "position": {
-            "start": {
-              "line": 31,
-              "column": 1,
-              "offset": 279
-            },
-            "end": {
-              "line": 31,
-              "column": 28,
-              "offset": 306
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 31,
-          "column": 1,
-          "offset": 279
-        },
-        "end": {
-          "line": 31,
-          "column": 28,
-          "offset": 306
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "bash",
-      "meta": "info",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 33,
-          "column": 1,
-          "offset": 308
-        },
-        "end": {
-          "line": 34,
-          "column": 4,
-          "offset": 326
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 35,
-      "column": 1,
-      "offset": 327
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code-info-with-marker.json b/test/fixtures/tree/fenced-code-info-with-marker.json
deleted file mode 100644
index 49021f8cc..000000000
--- a/test/fixtures/tree/fenced-code-info-with-marker.json
+++ /dev/null
@@ -1,368 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "If the info string comes after a backtick fence, it may not contain any backtick\ncharacters.\nThe reason for this restriction is that otherwise some inline code would be\nincorrectly interpreted as the beginning of a fenced code block.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 4,
-              "column": 65,
-              "offset": 233
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 4,
-          "column": 65,
-          "offset": 233
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Tildes in info strings are fine:",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 235
-            },
-            "end": {
-              "line": 6,
-              "column": 33,
-              "offset": 267
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 235
-        },
-        "end": {
-          "line": 6,
-          "column": 33,
-          "offset": 267
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "js",
-      "meta": "filename=~/.bashrc",
-      "value": "console.log(1)",
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 269
-        },
-        "end": {
-          "line": 10,
-          "column": 4,
-          "offset": 312
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Tildes in info strings are fine after tilde fences:",
-          "position": {
-            "start": {
-              "line": 12,
-              "column": 1,
-              "offset": 314
-            },
-            "end": {
-              "line": 12,
-              "column": 52,
-              "offset": 365
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 314
-        },
-        "end": {
-          "line": 12,
-          "column": 52,
-          "offset": 365
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "js",
-      "meta": "filename=~/.bashrc",
-      "value": "console.log(1)",
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 367
-        },
-        "end": {
-          "line": 16,
-          "column": 4,
-          "offset": 410
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Backticks in info strings are fine after tilde fences:",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 1,
-              "offset": 412
-            },
-            "end": {
-              "line": 18,
-              "column": 55,
-              "offset": 466
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 412
-        },
-        "end": {
-          "line": 18,
-          "column": 55,
-          "offset": 466
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "js",
-      "meta": "title=`.bashrc`",
-      "value": "console.log(1)",
-      "position": {
-        "start": {
-          "line": 20,
-          "column": 1,
-          "offset": 468
-        },
-        "end": {
-          "line": 22,
-          "column": 4,
-          "offset": 508
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Backticks in info strings are ",
-          "position": {
-            "start": {
-              "line": 24,
-              "column": 1,
-              "offset": 510
-            },
-            "end": {
-              "line": 24,
-              "column": 31,
-              "offset": 540
-            }
-          }
-        },
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "text",
-              "value": "not",
-              "position": {
-                "start": {
-                  "line": 24,
-                  "column": 33,
-                  "offset": 542
-                },
-                "end": {
-                  "line": 24,
-                  "column": 36,
-                  "offset": 545
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 24,
-              "column": 31,
-              "offset": 540
-            },
-            "end": {
-              "line": 24,
-              "column": 38,
-              "offset": 547
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": " fine after backtick fences:",
-          "position": {
-            "start": {
-              "line": 24,
-              "column": 38,
-              "offset": 547
-            },
-            "end": {
-              "line": 24,
-              "column": 66,
-              "offset": 575
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 24,
-          "column": 1,
-          "offset": 510
-        },
-        "end": {
-          "line": 24,
-          "column": 66,
-          "offset": 575
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "```js title=",
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 1,
-              "offset": 577
-            },
-            "end": {
-              "line": 26,
-              "column": 13,
-              "offset": 589
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": ".bashrc",
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 13,
-              "offset": 589
-            },
-            "end": {
-              "line": 26,
-              "column": 22,
-              "offset": 598
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "\nconsole.log(1)",
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 22,
-              "offset": 598
-            },
-            "end": {
-              "line": 27,
-              "column": 15,
-              "offset": 613
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 26,
-          "column": 1,
-          "offset": 577
-        },
-        "end": {
-          "line": 27,
-          "column": 15,
-          "offset": 613
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 28,
-          "column": 1,
-          "offset": 614
-        },
-        "end": {
-          "line": 29,
-          "column": 1,
-          "offset": 618
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 29,
-      "column": 1,
-      "offset": 618
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code-initial-final-newlines.json b/test/fixtures/tree/fenced-code-initial-final-newlines.json
deleted file mode 100644
index a606faa22..000000000
--- a/test/fixtures/tree/fenced-code-initial-final-newlines.json
+++ /dev/null
@@ -1,170 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Initial:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 9,
-              "offset": 8
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 9,
-          "offset": 8
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "\n\n123",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 10
-        },
-        "end": {
-          "line": 7,
-          "column": 4,
-          "offset": 23
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Final:",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 25
-            },
-            "end": {
-              "line": 9,
-              "column": 7,
-              "offset": 31
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 25
-        },
-        "end": {
-          "line": 9,
-          "column": 7,
-          "offset": 31
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "123\n\n",
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 33
-        },
-        "end": {
-          "line": 15,
-          "column": 4,
-          "offset": 46
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Both:",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 48
-            },
-            "end": {
-              "line": 17,
-              "column": 6,
-              "offset": 53
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 48
-        },
-        "end": {
-          "line": 17,
-          "column": 6,
-          "offset": 53
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "\n\n123\n\n",
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 1,
-          "offset": 55
-        },
-        "end": {
-          "line": 25,
-          "column": 4,
-          "offset": 70
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 26,
-      "column": 1,
-      "offset": 71
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code-lang-unescape.json b/test/fixtures/tree/fenced-code-lang-unescape.json
deleted file mode 100644
index 0a8eba1a7..000000000
--- a/test/fixtures/tree/fenced-code-lang-unescape.json
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "code",
-      "lang": "\\[awd",
-      "meta": null,
-      "value": "dwa",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 4,
-          "offset": 18
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 19
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code-trailing-characters-2.nooutput.json b/test/fixtures/tree/fenced-code-trailing-characters-2.nooutput.json
deleted file mode 100644
index d5e48a8d2..000000000
--- a/test/fixtures/tree/fenced-code-trailing-characters-2.nooutput.json
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "``` aaa",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 4,
-          "offset": 15
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 16
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code-trailing-characters.nooutput.json b/test/fixtures/tree/fenced-code-trailing-characters.nooutput.json
deleted file mode 100644
index b9db8c349..000000000
--- a/test/fixtures/tree/fenced-code-trailing-characters.nooutput.json
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "code",
-      "lang": "js",
-      "meta": null,
-      "value": "foo();\n```bash",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 4,
-          "column": 4,
-          "offset": 24
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 5,
-      "column": 1,
-      "offset": 25
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code-white-space-after-flag.json b/test/fixtures/tree/fenced-code-white-space-after-flag.json
deleted file mode 100644
index 6daffa172..000000000
--- a/test/fixtures/tree/fenced-code-white-space-after-flag.json
+++ /dev/null
@@ -1,53 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "code",
-      "lang": "js",
-      "meta": null,
-      "value": "foo();",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 4,
-          "offset": 18
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "bash",
-      "meta": null,
-      "value": "echo \"hello, ${WORLD}\"",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 20
-        },
-        "end": {
-          "line": 7,
-          "column": 6,
-          "offset": 60
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 8,
-      "column": 1,
-      "offset": 61
-    }
-  }
-}
diff --git a/test/fixtures/tree/fenced-code.json b/test/fixtures/tree/fenced-code.json
deleted file mode 100644
index 067d5b227..000000000
--- a/test/fixtures/tree/fenced-code.json
+++ /dev/null
@@ -1,89 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "code",
-      "lang": "js",
-      "meta": null,
-      "value": "var a = 'hello';\nconsole.log(a + ' world');",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 4,
-          "column": 4,
-          "offset": 54
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "bash",
-      "meta": null,
-      "value": "echo \"hello, ${WORLD}\"",
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 56
-        },
-        "end": {
-          "line": 8,
-          "column": 4,
-          "offset": 90
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "longfence",
-      "meta": null,
-      "value": "Q: What do you call a tall person who sells stolen goods?",
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 92
-        },
-        "end": {
-          "line": 12,
-          "column": 8,
-          "offset": 174
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": "ManyTildes",
-      "meta": null,
-      "value": "A longfence!",
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 176
-        },
-        "end": {
-          "line": 16,
-          "column": 11,
-          "offset": 222
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 17,
-      "column": 1,
-      "offset": 223
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-218.json b/test/fixtures/tree/gh-218.json
deleted file mode 100644
index d9fc69aac..000000000
--- a/test/fixtures/tree/gh-218.json
+++ /dev/null
@@ -1,156 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "first header\n==========",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 4,
-                      "offset": 3
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 11,
-                      "offset": 26
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 2,
-                  "column": 11,
-                  "offset": 26
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 2,
-              "column": 11,
-              "offset": 26
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "second header",
-                  "position": {
-                    "start": {
-                      "line": 4,
-                      "column": 4,
-                      "offset": 31
-                    },
-                    "end": {
-                      "line": 4,
-                      "column": 17,
-                      "offset": 44
-                    }
-                  }
-                }
-              ],
-              "position": {
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-                },
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-                  "line": 4,
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-                  "offset": 44
-                }
-              }
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-          ],
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-              "offset": 28
-            },
-            "end": {
-              "line": 4,
-              "column": 17,
-              "offset": 44
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 4,
-          "column": 17,
-          "offset": 44
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 45
-        },
-        "end": {
-          "line": 5,
-          "column": 16,
-          "offset": 60
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 61
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-324.json b/test/fixtures/tree/gh-324.json
deleted file mode 100644
index 18e6b015e..000000000
--- a/test/fixtures/tree/gh-324.json
+++ /dev/null
@@ -1,85 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[1]",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 4,
-              "offset": 3
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "http://example.com",
-          "children": [
-            {
-              "type": "text",
-              "value": "Test Text",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                },
-                "end": {
-                  "line": 1,
-                  "column": 14,
-                  "offset": 13
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 4,
-              "offset": 3
-            },
-            "end": {
-              "line": 1,
-              "column": 35,
-              "offset": 34
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 35,
-          "offset": 34
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 35
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-398.json b/test/fixtures/tree/gh-398.json
deleted file mode 100644
index 1e59b909b..000000000
--- a/test/fixtures/tree/gh-398.json
+++ /dev/null
@@ -1,133 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "foo ",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 6,
-                  "offset": 5
-                }
-              }
-            },
-            {
-              "type": "emphasis",
-              "children": [
-                {
-                  "type": "strong",
-                  "children": [
-                    {
-                      "type": "text",
-                      "value": "bar",
-                      "position": {
-                        "start": {
-                          "line": 1,
-                          "column": 9,
-                          "offset": 8
-                        },
-                        "end": {
-                          "line": 1,
-                          "column": 12,
-                          "offset": 11
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 7,
-                      "offset": 6
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 14,
-                      "offset": 13
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 6,
-                  "offset": 5
-                },
-                "end": {
-                  "line": 1,
-                  "column": 15,
-                  "offset": 14
-                }
-              }
-            },
-            {
-              "type": "text",
-              "value": " baz",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 15,
-                  "offset": 14
-                },
-                "end": {
-                  "line": 1,
-                  "column": 19,
-                  "offset": 18
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 20,
-              "offset": 19
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 20,
-          "offset": 19
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 20
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-402.json b/test/fixtures/tree/gh-402.json
deleted file mode 100644
index 04a2c8001..000000000
--- a/test/fixtures/tree/gh-402.json
+++ /dev/null
@@ -1,107 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "One\nTwo",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 4,
-                      "offset": 3
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 7,
-                      "offset": 13
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 2,
-                  "column": 7,
-                  "offset": 13
-                }
-              }
-            },
-            {
-              "type": "code",
-              "lang": "bash",
-              "meta": null,
-              "value": "npm install --save sqlite3",
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 2,
-                  "offset": 16
-                },
-                "end": {
-                  "line": 6,
-                  "column": 5,
-                  "offset": 57
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 6,
-              "column": 5,
-              "offset": 57
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 6,
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-          "offset": 57
-        }
-      }
-    }
-  ],
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-    "start": {
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-      "offset": 0
-    },
-    "end": {
-      "line": 7,
-      "column": 1,
-      "offset": 58
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-407.json b/test/fixtures/tree/gh-407.json
deleted file mode 100644
index b95a193ca..000000000
--- a/test/fixtures/tree/gh-407.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "foo\n*",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 2,
-              "column": 2,
-              "offset": 5
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 2,
-          "offset": 5
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "foo\n+",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 7
-            },
-            "end": {
-              "line": 5,
-              "column": 2,
-              "offset": 12
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 4,
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-          "offset": 7
-        },
-        "end": {
-          "line": 5,
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-          "offset": 12
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "foo\n1.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 14
-            },
-            "end": {
-              "line": 8,
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-      ],
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-  ],
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-      "offset": 0
-    },
-    "end": {
-      "line": 9,
-      "column": 1,
-      "offset": 21
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-450.json b/test/fixtures/tree/gh-450.json
deleted file mode 100644
index abd4d8b88..000000000
--- a/test/fixtures/tree/gh-450.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[ ] brackets with white space inside",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 37,
-              "offset": 36
-            }
-          }
-        }
-      ],
-      "position": {
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-          "offset": 0
-        },
-        "end": {
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-          "offset": 36
-        }
-      }
-    }
-  ],
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-      "offset": 0
-    },
-    "end": {
-      "line": 2,
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-      "offset": 37
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-459.json b/test/fixtures/tree/gh-459.json
deleted file mode 100644
index f77d67a10..000000000
--- a/test/fixtures/tree/gh-459.json
+++ /dev/null
@@ -1,155 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "link",
-              "title": null,
-              "url": "https://**",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Link",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 4,
-                      "offset": 3
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 8,
-                      "offset": 7
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-              ],
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-                "end": {
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-      }
-    },
-    {
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-      "children": [
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "link",
-              "title": null,
-              "url": "https://__",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Link",
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-                    "start": {
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-                      "offset": 27
-                    },
-                    "end": {
-                      "line": 3,
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-  }
-}
diff --git a/test/fixtures/tree/gh-493.json b/test/fixtures/tree/gh-493.json
deleted file mode 100644
index aa1cb3199..000000000
--- a/test/fixtures/tree/gh-493.json
+++ /dev/null
@@ -1,213 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "aa_bb ",
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-          "value": "aa_bb",
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-              "column": 8,
-              "offset": 54
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "aa**bb",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 8,
-              "offset": 54
-            },
-            "end": {
-              "line": 7,
-              "column": 16,
-              "offset": 62
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 47
-        },
-        "end": {
-          "line": 7,
-          "column": 16,
-          "offset": 62
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 8,
-      "column": 1,
-      "offset": 63
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-494.json b/test/fixtures/tree/gh-494.json
deleted file mode 100644
index 2da164fde..000000000
--- a/test/fixtures/tree/gh-494.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "inlineCode",
-          "value": " a",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 3,
-              "column": 2,
-              "offset": 6
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 2,
-          "offset": 6
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 7
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-497.json b/test/fixtures/tree/gh-497.json
deleted file mode 100644
index 2c07d1c80..000000000
--- a/test/fixtures/tree/gh-497.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[one]\n[two]\n[three]\n[four]\n[five]",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 5,
-              "column": 7,
-              "offset": 33
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 5,
-          "column": 7,
-          "offset": 33
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 34
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-504.json b/test/fixtures/tree/gh-504.json
deleted file mode 100644
index c3af96457..000000000
--- a/test/fixtures/tree/gh-504.json
+++ /dev/null
@@ -1,100 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "strong",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "bold-italic",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 4,
-                      "offset": 3
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 15,
-                      "offset": 14
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 17,
-                  "offset": 16
-                }
-              }
-            },
-            {
-              "type": "text",
-              "value": " italic",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 17,
-                  "offset": 16
-                },
-                "end": {
-                  "line": 1,
-                  "column": 24,
-                  "offset": 23
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 25,
-              "offset": 24
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 25,
-          "offset": 24
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 25
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-517.json b/test/fixtures/tree/gh-517.json
deleted file mode 100644
index a094f65e8..000000000
--- a/test/fixtures/tree/gh-517.json
+++ /dev/null
@@ -1,89 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "test",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 5,
-                      "offset": 4
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 9,
-                      "offset": 8
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                },
-                "end": {
-                  "line": 1,
-                  "column": 9,
-                  "offset": 8
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 2,
-              "offset": 1
-            },
-            "end": {
-              "line": 1,
-              "column": 9,
-              "offset": 8
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 2,
-          "offset": 1
-        },
-        "end": {
-          "line": 1,
-          "column": 9,
-          "offset": 8
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 9
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-521.output.json b/test/fixtures/tree/gh-521.output.json
deleted file mode 100644
index 5cd46f60e..000000000
--- a/test/fixtures/tree/gh-521.output.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "1. test",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 9,
-              "offset": 8
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 9,
-          "offset": 8
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 9
-    }
-  }
-}
diff --git a/test/fixtures/tree/gh-523.json b/test/fixtures/tree/gh-523.json
deleted file mode 100644
index 1ed844e50..000000000
--- a/test/fixtures/tree/gh-523.json
+++ /dev/null
@@ -1,161 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Test",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 3,
-                      "offset": 2
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 7,
-                      "offset": 6
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            },
-            {
-              "type": "list",
-              "ordered": false,
-              "start": null,
-              "spread": false,
-              "children": [
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "Test\nTest",
-                          "position": {
-                            "start": {
-                              "line": 2,
-                              "column": 7,
-                              "offset": 13
-                            },
-                            "end": {
-                              "line": 3,
-                              "column": 5,
-                              "offset": 22
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 2,
-                          "column": 7,
-                          "offset": 13
-                        },
-                        "end": {
-                          "line": 3,
-                          "column": 5,
-                          "offset": 22
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 2,
-                      "column": 5,
-                      "offset": 11
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 5,
-                      "offset": 22
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 2,
-                  "column": 5,
-                  "offset": 11
-                },
-                "end": {
-                  "line": 3,
-                  "column": 5,
-                  "offset": 22
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 3,
-              "column": 5,
-              "offset": 22
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 5,
-          "offset": 22
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 23
-    }
-  }
-}
diff --git a/test/fixtures/tree/hard-wrapped-paragraphs-with-list-like-lines.json b/test/fixtures/tree/hard-wrapped-paragraphs-with-list-like-lines.json
deleted file mode 100644
index d0b6ed3e4..000000000
--- a/test/fixtures/tree/hard-wrapped-paragraphs-with-list-like-lines.json
+++ /dev/null
@@ -1,501 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "In Markdown 1.0.0 and earlier. Version\n8. This line turns into a list item.\nBecause a hard-wrapped line in the\n123. middle of a paragraph looked like a\nlist item.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 5,
-              "column": 11,
-              "offset": 162
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 5,
-          "column": 11,
-          "offset": 162
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here's one with a bullet.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 164
-            },
-            "end": {
-              "line": 7,
-              "column": 26,
-              "offset": 189
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 164
-        },
-        "end": {
-          "line": 7,
-          "column": 26,
-          "offset": 189
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "criminey.",
-                  "position": {
-                    "start": {
-                      "line": 8,
-                      "column": 3,
-                      "offset": 192
-                    },
-                    "end": {
-                      "line": 8,
-                      "column": 12,
-                      "offset": 201
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 8,
-                  "column": 3,
-                  "offset": 192
-                },
-                "end": {
-                  "line": 8,
-                  "column": 12,
-                  "offset": 201
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 190
-            },
-            "end": {
-              "line": 8,
-              "column": 12,
-              "offset": 201
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 190
-        },
-        "end": {
-          "line": 8,
-          "column": 12,
-          "offset": 201
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Non-GFM does not create a list for either.\nGFM does not create a list for ",
-          "position": {
-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 203
-            },
-            "end": {
-              "line": 11,
-              "column": 32,
-              "offset": 277
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "8.",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 32,
-              "offset": 277
-            },
-            "end": {
-              "line": 11,
-              "column": 36,
-              "offset": 281
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ", but does for ",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 36,
-              "offset": 281
-            },
-            "end": {
-              "line": 11,
-              "column": 51,
-              "offset": 296
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "*",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 51,
-              "offset": 296
-            },
-            "end": {
-              "line": 11,
-              "column": 54,
-              "offset": 299
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".\nCommonMark creates a list for both.\nAll versions create lists for the following.",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 54,
-              "offset": 299
-            },
-            "end": {
-              "line": 13,
-              "column": 45,
-              "offset": 381
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 203
-        },
-        "end": {
-          "line": 13,
-          "column": 45,
-          "offset": 381
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Here's one with a bullet.",
-                  "position": {
-                    "start": {
-                      "line": 15,
-                      "column": 3,
-                      "offset": 385
-                    },
-                    "end": {
-                      "line": 15,
-                      "column": 28,
-                      "offset": 410
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 15,
-                  "column": 3,
-                  "offset": 385
-                },
-                "end": {
-                  "line": 15,
-                  "column": 28,
-                  "offset": 410
-                }
-              }
-            },
-            {
-              "type": "list",
-              "ordered": false,
-              "start": null,
-              "spread": false,
-              "children": [
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "criminey.",
-                          "position": {
-                            "start": {
-                              "line": 16,
-                              "column": 5,
-                              "offset": 415
-                            },
-                            "end": {
-                              "line": 16,
-                              "column": 14,
-                              "offset": 424
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 16,
-                          "column": 5,
-                          "offset": 415
-                        },
-                        "end": {
-                          "line": 16,
-                          "column": 14,
-                          "offset": 424
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 16,
-                      "column": 3,
-                      "offset": 413
-                    },
-                    "end": {
-                      "line": 16,
-                      "column": 14,
-                      "offset": 424
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 16,
-                  "column": 3,
-                  "offset": 413
-                },
-                "end": {
-                  "line": 16,
-                  "column": 14,
-                  "offset": 424
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 1,
-              "offset": 383
-            },
-            "end": {
-              "line": 16,
-              "column": 14,
-              "offset": 424
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 383
-        },
-        "end": {
-          "line": 16,
-          "column": 14,
-          "offset": 424
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "...and the following:",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 1,
-              "offset": 426
-            },
-            "end": {
-              "line": 18,
-              "column": 22,
-              "offset": 447
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 426
-        },
-        "end": {
-          "line": 18,
-          "column": 22,
-          "offset": 447
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "In Markdown 1.0.0 and earlier. Version\n8. This line turns into a list item.",
-                  "position": {
-                    "start": {
-                      "line": 20,
-                      "column": 4,
-                      "offset": 452
-                    },
-                    "end": {
-                      "line": 21,
-                      "column": 40,
-                      "offset": 530
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 20,
-                  "column": 4,
-                  "offset": 452
-                },
-                "end": {
-                  "line": 21,
-                  "column": 40,
-                  "offset": 530
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 20,
-              "column": 1,
-              "offset": 449
-            },
-            "end": {
-              "line": 21,
-              "column": 40,
-              "offset": 530
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 20,
-          "column": 1,
-          "offset": 449
-        },
-        "end": {
-          "line": 21,
-          "column": 40,
-          "offset": 530
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 22,
-      "column": 1,
-      "offset": 531
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading-atx-closed-trailing-white-space.json b/test/fixtures/tree/heading-atx-closed-trailing-white-space.json
deleted file mode 100644
index 926d355b1..000000000
--- a/test/fixtures/tree/heading-atx-closed-trailing-white-space.json
+++ /dev/null
@@ -1,85 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Foo",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 6,
-              "offset": 5
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 9,
-          "offset": 8
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "Bar",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 4,
-              "offset": 13
-            },
-            "end": {
-              "line": 3,
-              "column": 7,
-              "offset": 16
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 10
-        },
-        "end": {
-          "line": 3,
-          "column": 11,
-          "offset": 20
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 21
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading-atx-empty.json b/test/fixtures/tree/heading-atx-empty.json
deleted file mode 100644
index 43f557b04..000000000
--- a/test/fixtures/tree/heading-atx-empty.json
+++ /dev/null
@@ -1,119 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 4,
-          "offset": 3
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 5
-        },
-        "end": {
-          "line": 3,
-          "column": 3,
-          "offset": 7
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 3,
-      "children": [],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 9
-        },
-        "end": {
-          "line": 5,
-          "column": 8,
-          "offset": 16
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 4,
-      "children": [],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 18
-        },
-        "end": {
-          "line": 7,
-          "column": 5,
-          "offset": 22
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 5,
-      "children": [],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 24
-        },
-        "end": {
-          "line": 9,
-          "column": 12,
-          "offset": 35
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 6,
-      "children": [],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 37
-        },
-        "end": {
-          "line": 11,
-          "column": 7,
-          "offset": 43
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 12,
-      "column": 1,
-      "offset": 44
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading-atx-no-space-before-trailing-number-sign.json b/test/fixtures/tree/heading-atx-no-space-before-trailing-number-sign.json
deleted file mode 100644
index d833d6c78..000000000
--- a/test/fixtures/tree/heading-atx-no-space-before-trailing-number-sign.json
+++ /dev/null
@@ -1,85 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "awd#",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 7,
-          "offset": 6
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "dwa###",
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 4,
-              "offset": 10
-            },
-            "end": {
-              "line": 2,
-              "column": 10,
-              "offset": 16
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 7
-        },
-        "end": {
-          "line": 2,
-          "column": 10,
-          "offset": 16
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 1,
-      "offset": 17
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading-in-blockquote.json b/test/fixtures/tree/heading-in-blockquote.json
deleted file mode 100644
index 9709ab7a8..000000000
--- a/test/fixtures/tree/heading-in-blockquote.json
+++ /dev/null
@@ -1,216 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "A blockquote\nwith some more text.",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 2,
-                  "column": 21,
-                  "offset": 35
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 2,
-              "column": 21,
-              "offset": 35
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 21,
-          "offset": 35
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "A normal paragraph.",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 37
-            },
-            "end": {
-              "line": 4,
-              "column": 20,
-              "offset": 56
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 37
-        },
-        "end": {
-          "line": 4,
-          "column": 20,
-          "offset": 56
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "A blockquote followed by a horizontal rule (in CommonMark).",
-              "position": {
-                "start": {
-                  "line": 6,
-                  "column": 3,
-                  "offset": 60
-                },
-                "end": {
-                  "line": 6,
-                  "column": 62,
-                  "offset": 119
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 3,
-              "offset": 60
-            },
-            "end": {
-              "line": 6,
-              "column": 62,
-              "offset": 119
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 58
-        },
-        "end": {
-          "line": 6,
-          "column": 62,
-          "offset": 119
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 120
-        },
-        "end": {
-          "line": 7,
-          "column": 4,
-          "offset": 123
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "heading",
-          "depth": 2,
-          "children": [
-            {
-              "type": "text",
-              "value": "A heading in a blockquote",
-              "position": {
-                "start": {
-                  "line": 9,
-                  "column": 3,
-                  "offset": 127
-                },
-                "end": {
-                  "line": 9,
-                  "column": 28,
-                  "offset": 152
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 3,
-              "offset": 127
-            },
-            "end": {
-              "line": 10,
-              "column": 6,
-              "offset": 158
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 125
-        },
-        "end": {
-          "line": 10,
-          "column": 6,
-          "offset": 158
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 11,
-      "column": 1,
-      "offset": 159
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading-in-paragraph.json b/test/fixtures/tree/heading-in-paragraph.json
deleted file mode 100644
index 836ff6450..000000000
--- a/test/fixtures/tree/heading-in-paragraph.json
+++ /dev/null
@@ -1,51 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Hello\nWorld",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 2,
-              "column": 6,
-              "offset": 11
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 4,
-          "offset": 15
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 16
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading-not-atx.json b/test/fixtures/tree/heading-not-atx.json
deleted file mode 100644
index c9a7f6a2b..000000000
--- a/test/fixtures/tree/heading-not-atx.json
+++ /dev/null
@@ -1,285 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "#This is not a heading, per CommonMark: ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 41,
-              "offset": 40
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "http://spec.commonmark.org/0.17/#example-25",
-          "children": [
-            {
-              "type": "text",
-              "value": "http://spec.commonmark.org/0.17/#example-25",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 42,
-                  "offset": 41
-                },
-                "end": {
-                  "line": 1,
-                  "column": 85,
-                  "offset": 84
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 41,
-              "offset": 40
-            },
-            "end": {
-              "line": 1,
-              "column": 86,
-              "offset": 85
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 86,
-          "offset": 85
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Kramdown (GitHub) neither supports unspaced ATX-headings.",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 87
-            },
-            "end": {
-              "line": 3,
-              "column": 58,
-              "offset": 144
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 87
-        },
-        "end": {
-          "line": 3,
-          "column": 58,
-          "offset": 144
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "######## h7?",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 146
-            },
-            "end": {
-              "line": 5,
-              "column": 13,
-              "offset": 158
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 146
-        },
-        "end": {
-          "line": 5,
-          "column": 13,
-          "offset": 158
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "######### h8?",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 160
-            },
-            "end": {
-              "line": 7,
-              "column": 14,
-              "offset": 173
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 160
-        },
-        "end": {
-          "line": 7,
-          "column": 14,
-          "offset": 173
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "########## h9?",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 175
-            },
-            "end": {
-              "line": 9,
-              "column": 15,
-              "offset": 189
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 175
-        },
-        "end": {
-          "line": 9,
-          "column": 15,
-          "offset": 189
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "More than six # characters is not a heading: ",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 191
-            },
-            "end": {
-              "line": 11,
-              "column": 46,
-              "offset": 236
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "http://spec.commonmark.org/0.26/#example-33",
-          "children": [
-            {
-              "type": "text",
-              "value": "http://spec.commonmark.org/0.26/#example-33",
-              "position": {
-                "start": {
-                  "line": 11,
-                  "column": 47,
-                  "offset": 237
-                },
-                "end": {
-                  "line": 11,
-                  "column": 90,
-                  "offset": 280
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 46,
-              "offset": 236
-            },
-            "end": {
-              "line": 11,
-              "column": 91,
-              "offset": 281
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 191
-        },
-        "end": {
-          "line": 11,
-          "column": 91,
-          "offset": 281
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 12,
-      "column": 1,
-      "offset": 282
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading-setext-with-initial-spacing.json b/test/fixtures/tree/heading-setext-with-initial-spacing.json
deleted file mode 100644
index 51b97149c..000000000
--- a/test/fixtures/tree/heading-setext-with-initial-spacing.json
+++ /dev/null
@@ -1,118 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 1",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 12,
-              "offset": 11
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 3,
-          "offset": 2
-        },
-        "end": {
-          "line": 2,
-          "column": 10,
-          "offset": 21
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 2",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 4,
-              "offset": 26
-            },
-            "end": {
-              "line": 4,
-              "column": 13,
-              "offset": 35
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 4,
-          "offset": 26
-        },
-        "end": {
-          "line": 5,
-          "column": 10,
-          "offset": 45
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Both these headings caused positional problems in on commit daa344c and before.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 47
-            },
-            "end": {
-              "line": 7,
-              "column": 80,
-              "offset": 126
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 47
-        },
-        "end": {
-          "line": 7,
-          "column": 80,
-          "offset": 126
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 8,
-      "column": 1,
-      "offset": 127
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading.output.close-atx.json b/test/fixtures/tree/heading.output.close-atx.json
deleted file mode 100644
index 5707de08f..000000000
--- a/test/fixtures/tree/heading.output.close-atx.json
+++ /dev/null
@@ -1,221 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 1",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 12,
-              "offset": 11
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 14,
-          "offset": 13
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 2",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 4,
-              "offset": 18
-            },
-            "end": {
-              "line": 3,
-              "column": 13,
-              "offset": 27
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 15
-        },
-        "end": {
-          "line": 3,
-          "column": 16,
-          "offset": 30
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 3,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 4",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 5,
-              "offset": 36
-            },
-            "end": {
-              "line": 5,
-              "column": 14,
-              "offset": 45
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 32
-        },
-        "end": {
-          "line": 5,
-          "column": 18,
-          "offset": 49
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 4,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 4",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 6,
-              "offset": 56
-            },
-            "end": {
-              "line": 7,
-              "column": 15,
-              "offset": 65
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 51
-        },
-        "end": {
-          "line": 7,
-          "column": 20,
-          "offset": 70
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 5,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 5",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 7,
-              "offset": 78
-            },
-            "end": {
-              "line": 9,
-              "column": 16,
-              "offset": 87
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 72
-        },
-        "end": {
-          "line": 9,
-          "column": 22,
-          "offset": 93
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 6,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 6",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 8,
-              "offset": 102
-            },
-            "end": {
-              "line": 11,
-              "column": 17,
-              "offset": 111
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 95
-        },
-        "end": {
-          "line": 11,
-          "column": 24,
-          "offset": 118
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 12,
-      "column": 1,
-      "offset": 119
-    }
-  }
-}
diff --git a/test/fixtures/tree/heading.output.setext.json b/test/fixtures/tree/heading.output.setext.json
deleted file mode 100644
index 70d060513..000000000
--- a/test/fixtures/tree/heading.output.setext.json
+++ /dev/null
@@ -1,221 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 1",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 10,
-              "offset": 9
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 10,
-          "offset": 19
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 2",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 21
-            },
-            "end": {
-              "line": 4,
-              "column": 10,
-              "offset": 30
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 21
-        },
-        "end": {
-          "line": 5,
-          "column": 10,
-          "offset": 40
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 3,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 4",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 5,
-              "offset": 46
-            },
-            "end": {
-              "line": 7,
-              "column": 14,
-              "offset": 55
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 42
-        },
-        "end": {
-          "line": 7,
-          "column": 14,
-          "offset": 55
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 4,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 4",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 6,
-              "offset": 62
-            },
-            "end": {
-              "line": 9,
-              "column": 15,
-              "offset": 71
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 57
-        },
-        "end": {
-          "line": 9,
-          "column": 15,
-          "offset": 71
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 5,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 5",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 7,
-              "offset": 79
-            },
-            "end": {
-              "line": 11,
-              "column": 16,
-              "offset": 88
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 73
-        },
-        "end": {
-          "line": 11,
-          "column": 16,
-          "offset": 88
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 6,
-      "children": [
-        {
-          "type": "text",
-          "value": "Heading 6",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 8,
-              "offset": 97
-            },
-            "end": {
-              "line": 13,
-              "column": 17,
-              "offset": 106
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 90
-        },
-        "end": {
-          "line": 13,
-          "column": 17,
-          "offset": 106
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 14,
-      "column": 1,
-      "offset": 107
-    }
-  }
-}
diff --git a/test/fixtures/tree/horizontal-rules-adjacent.json b/test/fixtures/tree/horizontal-rules-adjacent.json
deleted file mode 100644
index 3a0d4ab24..000000000
--- a/test/fixtures/tree/horizontal-rules-adjacent.json
+++ /dev/null
@@ -1,240 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 4,
-          "offset": 3
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 4
-        },
-        "end": {
-          "line": 2,
-          "column": 4,
-          "offset": 7
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 8
-        },
-        "end": {
-          "line": 3,
-          "column": 4,
-          "offset": 11
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "The three asterisks are not a Setext header.",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 13
-            },
-            "end": {
-              "line": 5,
-              "column": 45,
-              "offset": 57
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 13
-        },
-        "end": {
-          "line": 5,
-          "column": 45,
-          "offset": 57
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a paragraph.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 59
-            },
-            "end": {
-              "line": 7,
-              "column": 21,
-              "offset": 79
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 59
-        },
-        "end": {
-          "line": 7,
-          "column": 21,
-          "offset": 79
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 80
-        },
-        "end": {
-          "line": 8,
-          "column": 4,
-          "offset": 83
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is another paragraph.",
-          "position": {
-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 85
-            },
-            "end": {
-              "line": 10,
-              "column": 27,
-              "offset": 111
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 85
-        },
-        "end": {
-          "line": 10,
-          "column": 27,
-          "offset": 111
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 112
-        },
-        "end": {
-          "line": 11,
-          "column": 4,
-          "offset": 115
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "But this is a secondary heading.",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 1,
-              "offset": 117
-            },
-            "end": {
-              "line": 13,
-              "column": 33,
-              "offset": 149
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 117
-        },
-        "end": {
-          "line": 14,
-          "column": 4,
-          "offset": 153
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 155
-        },
-        "end": {
-          "line": 16,
-          "column": 4,
-          "offset": 158
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 17,
-      "column": 1,
-      "offset": 159
-    }
-  }
-}
diff --git a/test/fixtures/tree/horizontal-rules.json b/test/fixtures/tree/horizontal-rules.json
deleted file mode 100644
index 78a02aee3..000000000
--- a/test/fixtures/tree/horizontal-rules.json
+++ /dev/null
@@ -1,584 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Dashes:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 8,
-              "offset": 7
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 8,
-          "offset": 7
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 9
-        },
-        "end": {
-          "line": 3,
-          "column": 4,
-          "offset": 12
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 2,
-          "offset": 15
-        },
-        "end": {
-          "line": 5,
-          "column": 5,
-          "offset": 18
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 3,
-          "offset": 23
-        },
-        "end": {
-          "line": 7,
-          "column": 6,
-          "offset": 26
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 4,
-          "offset": 31
-        },
-        "end": {
-          "line": 9,
-          "column": 7,
-          "offset": 34
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "---",
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 36
-        },
-        "end": {
-          "line": 11,
-          "column": 5,
-          "offset": 40
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 42
-        },
-        "end": {
-          "line": 13,
-          "column": 6,
-          "offset": 47
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 2,
-          "offset": 50
-        },
-        "end": {
-          "line": 15,
-          "column": 7,
-          "offset": 55
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 3,
-          "offset": 60
-        },
-        "end": {
-          "line": 17,
-          "column": 8,
-          "offset": 65
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 4,
-          "offset": 70
-        },
-        "end": {
-          "line": 19,
-          "column": 9,
-          "offset": 75
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "- - -",
-      "position": {
-        "start": {
-          "line": 21,
-          "column": 1,
-          "offset": 77
-        },
-        "end": {
-          "line": 21,
-          "column": 7,
-          "offset": 83
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Asterisks:",
-          "position": {
-            "start": {
-              "line": 24,
-              "column": 1,
-              "offset": 86
-            },
-            "end": {
-              "line": 24,
-              "column": 11,
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-            }
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-        },
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-          "line": 24,
-          "column": 11,
-          "offset": 96
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 26,
-          "column": 1,
-          "offset": 98
-        },
-        "end": {
-          "line": 26,
-          "column": 4,
-          "offset": 101
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 28,
-          "column": 2,
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-        },
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-          "line": 28,
-          "column": 5,
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-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
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-        },
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-          "line": 30,
-          "column": 6,
-          "offset": 115
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 32,
-          "column": 4,
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-        },
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-          "line": 32,
-          "column": 7,
-          "offset": 123
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "***",
-      "position": {
-        "start": {
-          "line": 34,
-          "column": 1,
-          "offset": 125
-        },
-        "end": {
-          "line": 34,
-          "column": 5,
-          "offset": 129
-        }
-      }
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diff --git a/test/fixtures/tree/hr-list-break.nooutput.json b/test/fixtures/tree/hr-list-break.nooutput.json
deleted file mode 100644
index b304bb164..000000000
--- a/test/fixtures/tree/hr-list-break.nooutput.json
+++ /dev/null
@@ -1,838 +0,0 @@
-{
-  "type": "root",
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-      "ordered": false,
-      "start": null,
-      "spread": false,
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-                      "line": 1,
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-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "you today?",
-          "position": {
-            "start": {
-              "line": 25,
-              "column": 1,
-              "offset": 237
-            },
-            "end": {
-              "line": 25,
-              "column": 11,
-              "offset": 247
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 25,
-          "column": 1,
-          "offset": 237
-        },
-        "end": {
-          "line": 25,
-          "column": 11,
-          "offset": 247
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 26,
-      "column": 1,
-      "offset": 248
-    }
-  }
-}
diff --git a/test/fixtures/tree/hr.output.norule-spaces.json b/test/fixtures/tree/hr.output.norule-spaces.json
deleted file mode 100644
index 3864812f2..000000000
--- a/test/fixtures/tree/hr.output.norule-spaces.json
+++ /dev/null
@@ -1,32 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 4,
-          "offset": 3
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 4
-    }
-  }
-}
diff --git a/test/fixtures/tree/hr.output.rule-repetition=5.json b/test/fixtures/tree/hr.output.rule-repetition=5.json
deleted file mode 100644
index 44ddd73d5..000000000
--- a/test/fixtures/tree/hr.output.rule-repetition=5.json
+++ /dev/null
@@ -1,32 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 10,
-          "offset": 9
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 10
-    }
-  }
-}
diff --git a/test/fixtures/tree/hr.output.rule=-.json b/test/fixtures/tree/hr.output.rule=-.json
deleted file mode 100644
index 3cebe300f..000000000
--- a/test/fixtures/tree/hr.output.rule=-.json
+++ /dev/null
@@ -1,32 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 6,
-          "offset": 5
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 6
-    }
-  }
-}
diff --git a/test/fixtures/tree/hr.output.rule=-asterisk-.json b/test/fixtures/tree/hr.output.rule=-asterisk-.json
deleted file mode 100644
index 3cebe300f..000000000
--- a/test/fixtures/tree/hr.output.rule=-asterisk-.json
+++ /dev/null
@@ -1,32 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 6,
-          "offset": 5
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 6
-    }
-  }
-}
diff --git a/test/fixtures/tree/hr.output.rule=_.json b/test/fixtures/tree/hr.output.rule=_.json
deleted file mode 100644
index 3cebe300f..000000000
--- a/test/fixtures/tree/hr.output.rule=_.json
+++ /dev/null
@@ -1,32 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 6,
-          "offset": 5
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 6
-    }
-  }
-}
diff --git a/test/fixtures/tree/html-advanced.json b/test/fixtures/tree/html-advanced.json
deleted file mode 100644
index ce5689348..000000000
--- a/test/fixtures/tree/html-advanced.json
+++ /dev/null
@@ -1,115 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Simple block on one line:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 26,
-              "offset": 25
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 26,
-          "offset": 25
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
foo
",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 27
-        },
-        "end": {
-          "line": 3,
-          "column": 15,
-          "offset": 41
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "And nested without indentation:",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 43
-            },
-            "end": {
-              "line": 5,
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-              "offset": 74
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
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-          "column": 1,
-          "offset": 43
-        },
-        "end": {
-          "line": 5,
-          "column": 32,
-          "offset": 74
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
\n
\n
\nfoo\n
\n
\"/>\n
\n
bar
\n
",
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 76
-        },
-        "end": {
-          "line": 15,
-          "column": 7,
-          "offset": 150
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 16,
-      "column": 1,
-      "offset": 151
-    }
-  }
-}
diff --git a/test/fixtures/tree/html-attributes.json b/test/fixtures/tree/html-attributes.json
deleted file mode 100644
index 5fb9a8f05..000000000
--- a/test/fixtures/tree/html-attributes.json
+++ /dev/null
@@ -1,358 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Block-level",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 14,
-              "offset": 13
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 14,
-          "offset": 13
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 15
-        },
-        "end": {
-          "line": 3,
-          "column": 58,
-          "offset": 72
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 75
-        },
-        "end": {
-          "line": 6,
-          "column": 14,
-          "offset": 88
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 91
-        },
-        "end": {
-          "line": 9,
-          "column": 10,
-          "offset": 100
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 103
-        },
-        "end": {
-          "line": 12,
-          "column": 29,
-          "offset": 131
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
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-        },
-        "end": {
-          "line": 15,
-          "column": 22,
-          "offset": 155
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 158
-        },
-        "end": {
-          "line": 18,
-          "column": 25,
-          "offset": 182
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 21,
-          "column": 1,
-          "offset": 185
-        },
-        "end": {
-          "line": 21,
-          "column": 26,
-          "offset": 210
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 29,
-          "column": 1,
-          "offset": 237
-        },
-        "end": {
-          "line": 29,
-          "column": 55,
-          "offset": 291
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 32,
-          "column": 1,
-          "offset": 294
-        },
-        "end": {
-          "line": 32,
-          "column": 11,
-          "offset": 304
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 35,
-          "column": 1,
-          "offset": 307
-        },
-        "end": {
-          "line": 35,
-          "column": 7,
-          "offset": 313
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 38,
-          "column": 1,
-          "offset": 316
-        },
-        "end": {
-          "line": 38,
-          "column": 26,
-          "offset": 341
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 41,
-          "column": 1,
-          "offset": 344
-        },
-        "end": {
-          "line": 41,
-          "column": 19,
-          "offset": 362
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 44,
-          "column": 1,
-          "offset": 365
-        },
-        "end": {
-          "line": 44,
-          "column": 22,
-          "offset": 386
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 47,
-          "column": 1,
-          "offset": 389
-        },
-        "end": {
-          "line": 47,
-          "column": 23,
-          "offset": 411
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 4,
-          "offset": 25
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "foo ",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 27
-            },
-            "end": {
-              "line": 5,
-              "column": 5,
-              "offset": 31
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 5,
-              "offset": 31
-            },
-            "end": {
-              "line": 5,
-              "column": 20,
-              "offset": 46
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 27
-        },
-        "end": {
-          "line": 5,
-          "column": 20,
-          "offset": 46
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 47
-    }
-  }
-}
diff --git a/test/fixtures/tree/html-comments.json b/test/fixtures/tree/html-comments.json
deleted file mode 100644
index 621f18c9a..000000000
--- a/test/fixtures/tree/html-comments.json
+++ /dev/null
@@ -1,313 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Paragraph one.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 15,
-              "offset": 14
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 15,
-          "offset": 14
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 16
-        },
-        "end": {
-          "line": 3,
-          "column": 34,
-          "offset": 49
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 51
-        },
-        "end": {
-          "line": 7,
-          "column": 4,
-          "offset": 85
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "What follows is not an HTML comment because it contains\ntwo consecutive dashes:\n",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 87
-            },
-            "end": {
-              "line": 11,
-              "column": 1,
-              "offset": 167
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "https://html.spec.whatwg.org/multipage/syntax.html#comments",
-          "children": [
-            {
-              "type": "text",
-              "value": "https://html.spec.whatwg.org/multipage/syntax.html#comments",
-              "position": {
-                "start": {
-                  "line": 11,
-                  "column": 2,
-                  "offset": 168
-                },
-                "end": {
-                  "line": 11,
-                  "column": 61,
-                  "offset": 227
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 167
-            },
-            "end": {
-              "line": 11,
-              "column": 62,
-              "offset": 228
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 62,
-              "offset": 228
-            },
-            "end": {
-              "line": 11,
-              "column": 63,
-              "offset": 229
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 87
-        },
-        "end": {
-          "line": 11,
-          "column": 63,
-          "offset": 229
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 231
-        },
-        "end": {
-          "line": 13,
-          "column": 51,
-          "offset": 281
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "But this is fine (in commonmark):",
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 1,
-              "offset": 283
-            },
-            "end": {
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-      ],
-      "position": {
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-        "end": {
-          "line": 15,
-          "column": 34,
-          "offset": 316
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 318
-        },
-        "end": {
-          "line": 17,
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-          "offset": 358
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "And, this is wrong (in commonmark):",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 1,
-              "offset": 360
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-            "end": {
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-          "offset": 395
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "-->",
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-          "line": 21,
-          "column": 1,
-          "offset": 397
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-        "end": {
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-          "offset": 405
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-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
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-          "type": "text",
-          "value": "The end.",
-          "position": {
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-            "end": {
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-      "column": 1,
-      "offset": 416
-    }
-  }
-}
diff --git a/test/fixtures/tree/html-declaration.json b/test/fixtures/tree/html-declaration.json
deleted file mode 100644
index 4c18fb593..000000000
--- a/test/fixtures/tree/html-declaration.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 16,
-          "offset": 15
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "foo ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 17
-            },
-            "end": {
-              "line": 3,
-              "column": 5,
-              "offset": 21
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 5,
-              "offset": 21
-            },
-            "end": {
-              "line": 3,
-              "column": 18,
-              "offset": 34
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 17
-        },
-        "end": {
-          "line": 3,
-          "column": 18,
-          "offset": 34
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 36
-        },
-        "end": {
-          "line": 5,
-          "column": 16,
-          "offset": 51
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 53
-        },
-        "end": {
-          "line": 7,
-          "column": 10,
-          "offset": 62
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 64
-        },
-        "end": {
-          "line": 9,
-          "column": 11,
-          "offset": 74
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 10,
-      "column": 1,
-      "offset": 75
-    }
-  }
-}
diff --git a/test/fixtures/tree/html-indented.json b/test/fixtures/tree/html-indented.json
deleted file mode 100644
index ead67e743..000000000
--- a/test/fixtures/tree/html-indented.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "html",
-      "value": " 
\n  *hello*\n   
",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 9,
-          "offset": 25
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": " \n  *hello*\n   ",
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 28
-        },
-        "end": {
-          "line": 8,
-          "column": 10,
-          "offset": 55
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "  ",
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 58
-        },
-        "end": {
-          "line": 11,
-          "column": 18,
-          "offset": 75
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "   ",
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 78
-        },
-        "end": {
-          "line": 14,
-          "column": 16,
-          "offset": 93
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "alpha ",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 96
-            },
-            "end": {
-              "line": 17,
-              "column": 7,
-              "offset": 102
-            }
-          }
-        },
-        {
-          "type": "html",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 7,
-              "offset": 102
-            },
-            "end": {
-              "line": 17,
-              "column": 19,
-              "offset": 114
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 96
-        },
-        "end": {
-          "line": 17,
-          "column": 19,
-          "offset": 114
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 18,
-      "column": 1,
-      "offset": 115
-    }
-  }
-}
diff --git a/test/fixtures/tree/html-processing-instruction.json b/test/fixtures/tree/html-processing-instruction.json
deleted file mode 100644
index 2a687c9c9..000000000
--- a/test/fixtures/tree/html-processing-instruction.json
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "html",
-      "value": "';\n?>",
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 3,
-          "offset": 20
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 21
-    }
-  }
-}
diff --git a/test/fixtures/tree/html-simple.json b/test/fixtures/tree/html-simple.json
deleted file mode 100644
index 9b2f7638c..000000000
--- a/test/fixtures/tree/html-simple.json
+++ /dev/null
@@ -1,643 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here's a simple block:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 23,
-              "offset": 22
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 23,
-          "offset": 22
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
\n\tfoo\n
",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 24
-        },
-        "end": {
-          "line": 5,
-          "column": 7,
-          "offset": 41
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This should be a code block, though:",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 43
-            },
-            "end": {
-              "line": 7,
-              "column": 37,
-              "offset": 79
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 43
-        },
-        "end": {
-          "line": 7,
-          "column": 37,
-          "offset": 79
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "
\n\tfoo\n
",
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 81
-        },
-        "end": {
-          "line": 11,
-          "column": 8,
-          "offset": 101
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "As should this:",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 1,
-              "offset": 103
-            },
-            "end": {
-              "line": 13,
-              "column": 16,
-              "offset": 118
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 103
-        },
-        "end": {
-          "line": 13,
-          "column": 16,
-          "offset": 118
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "
foo
",
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 120
-        },
-        "end": {
-          "line": 15,
-          "column": 16,
-          "offset": 135
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Now, nested:",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 137
-            },
-            "end": {
-              "line": 17,
-              "column": 13,
-              "offset": 149
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 137
-        },
-        "end": {
-          "line": 17,
-          "column": 13,
-          "offset": 149
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
\n\t
\n\t\t
\n\t\t\tfoo\n\t\t
\n\t
\n
",
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 1,
-          "offset": 151
-        },
-        "end": {
-          "line": 25,
-          "column": 7,
-          "offset": 202
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This should just be an HTML comment:",
-          "position": {
-            "start": {
-              "line": 27,
-              "column": 1,
-              "offset": 204
-            },
-            "end": {
-              "line": 27,
-              "column": 37,
-              "offset": 240
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 27,
-          "column": 1,
-          "offset": 204
-        },
-        "end": {
-          "line": 27,
-          "column": 37,
-          "offset": 240
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 29,
-          "column": 1,
-          "offset": 242
-        },
-        "end": {
-          "line": 29,
-          "column": 17,
-          "offset": 258
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Multiline:",
-          "position": {
-            "start": {
-              "line": 31,
-              "column": 1,
-              "offset": 260
-            },
-            "end": {
-              "line": 31,
-              "column": 11,
-              "offset": 270
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 31,
-          "column": 1,
-          "offset": 260
-        },
-        "end": {
-          "line": 31,
-          "column": 11,
-          "offset": 270
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
-        "start": {
-          "line": 33,
-          "column": 1,
-          "offset": 272
-        },
-        "end": {
-          "line": 36,
-          "column": 4,
-          "offset": 290
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Code block:",
-          "position": {
-            "start": {
-              "line": 38,
-              "column": 1,
-              "offset": 292
-            },
-            "end": {
-              "line": 38,
-              "column": 12,
-              "offset": 303
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 38,
-          "column": 1,
-          "offset": 292
-        },
-        "end": {
-          "line": 38,
-          "column": 12,
-          "offset": 303
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 40,
-          "column": 1,
-          "offset": 305
-        },
-        "end": {
-          "line": 40,
-          "column": 18,
-          "offset": 322
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Just plain comment, with trailing spaces on the line:",
-          "position": {
-            "start": {
-              "line": 42,
-              "column": 1,
-              "offset": 324
-            },
-            "end": {
-              "line": 42,
-              "column": 54,
-              "offset": 377
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 42,
-          "column": 1,
-          "offset": 324
-        },
-        "end": {
-          "line": 42,
-          "column": 54,
-          "offset": 377
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "   ",
-      "position": {
-        "start": {
-          "line": 44,
-          "column": 1,
-          "offset": 379
-        },
-        "end": {
-          "line": 44,
-          "column": 16,
-          "offset": 394
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Code:",
-          "position": {
-            "start": {
-              "line": 46,
-              "column": 1,
-              "offset": 396
-            },
-            "end": {
-              "line": 46,
-              "column": 6,
-              "offset": 401
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 46,
-          "column": 1,
-          "offset": 396
-        },
-        "end": {
-          "line": 46,
-          "column": 6,
-          "offset": 401
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 48,
-          "column": 1,
-          "offset": 403
-        },
-        "end": {
-          "line": 49,
-          "column": 2,
-          "offset": 410
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Hr's:",
-          "position": {
-            "start": {
-              "line": 50,
-              "column": 1,
-              "offset": 411
-            },
-            "end": {
-              "line": 50,
-              "column": 6,
-              "offset": 416
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 50,
-          "column": 1,
-          "offset": 411
-        },
-        "end": {
-          "line": 50,
-          "column": 6,
-          "offset": 416
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 52,
-          "column": 1,
-          "offset": 418
-        },
-        "end": {
-          "line": 52,
-          "column": 5,
-          "offset": 422
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 54,
-          "column": 1,
-          "offset": 424
-        },
-        "end": {
-          "line": 54,
-          "column": 5,
-          "offset": 428
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 56,
-          "column": 1,
-          "offset": 430
-        },
-        "end": {
-          "line": 56,
-          "column": 5,
-          "offset": 434
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
   ",
-      "position": {
-        "start": {
-          "line": 58,
-          "column": 1,
-          "offset": 436
-        },
-        "end": {
-          "line": 58,
-          "column": 8,
-          "offset": 443
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
  ",
-      "position": {
-        "start": {
-          "line": 60,
-          "column": 1,
-          "offset": 445
-        },
-        "end": {
-          "line": 60,
-          "column": 7,
-          "offset": 451
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
 ",
-      "position": {
-        "start": {
-          "line": 62,
-          "column": 1,
-          "offset": 453
-        },
-        "end": {
-          "line": 62,
-          "column": 6,
-          "offset": 458
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 64,
-          "column": 1,
-          "offset": 460
-        },
-        "end": {
-          "line": 64,
-          "column": 28,
-          "offset": 487
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 66,
-          "column": 1,
-          "offset": 489
-        },
-        "end": {
-          "line": 66,
-          "column": 27,
-          "offset": 515
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 68,
-          "column": 1,
-          "offset": 517
-        },
-        "end": {
-          "line": 68,
-          "column": 27,
-          "offset": 543
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 69,
-      "column": 1,
-      "offset": 544
-    }
-  }
-}
diff --git a/test/fixtures/tree/html-tags.json b/test/fixtures/tree/html-tags.json
deleted file mode 100644
index d71dc472e..000000000
--- a/test/fixtures/tree/html-tags.json
+++ /dev/null
@@ -1,865 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Block",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 8,
-              "offset": 7
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 8,
-          "offset": 7
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 9
-        },
-        "end": {
-          "line": 3,
-          "column": 10,
-          "offset": 18
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 21
-        },
-        "end": {
-          "line": 6,
-          "column": 10,
-          "offset": 30
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 33
-        },
-        "end": {
-          "line": 9,
-          "column": 10,
-          "offset": 42
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "<-article>",
-          "position": {
-            "start": {
-              "line": 12,
-              "column": 1,
-              "offset": 45
-            },
-            "end": {
-              "line": 12,
-              "column": 11,
-              "offset": 55
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 45
-        },
-        "end": {
-          "line": 12,
-          "column": 11,
-          "offset": 55
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
",
-      "position": {
-        "start": {
-          "line": 110,
-          "column": 1,
-          "offset": 483
-        },
-        "end": {
-          "line": 110,
-          "column": 16,
-          "offset": 498
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
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-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 111,
-      "column": 1,
-      "offset": 499
-    }
-  }
-}
diff --git a/test/fixtures/tree/image-empty-alt.json b/test/fixtures/tree/image-empty-alt.json
deleted file mode 100644
index da1332e01..000000000
--- a/test/fixtures/tree/image-empty-alt.json
+++ /dev/null
@@ -1,52 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": null,
-          "url": "/xyz.png",
-          "alt": "",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 14,
-              "offset": 13
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 14,
-          "offset": 13
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 14
-    }
-  }
-}
diff --git a/test/fixtures/tree/image-in-link.json b/test/fixtures/tree/image-in-link.json
deleted file mode 100644
index a4cdcb6fc..000000000
--- a/test/fixtures/tree/image-in-link.json
+++ /dev/null
@@ -1,180 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "http://shields.io",
-          "children": [
-            {
-              "type": "image",
-              "title": null,
-              "url": "https://img.shields.io/badge/unicorn-approved-ff69b4.svg",
-              "alt": "Unicorn approved",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 1,
-                  "column": 81,
-                  "offset": 80
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 101,
-              "offset": 100
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 101,
-          "offset": 100
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "https://travis-ci.org/wooorm/mdast",
-          "children": [
-            {
-              "type": "image",
-              "title": null,
-              "url": "https://img.shields.io/travis/wooorm/mdast.svg?style=flat",
-              "alt": "Build Status",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 103
-                },
-                "end": {
-                  "line": 3,
-                  "column": 76,
-                  "offset": 177
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 102
-            },
-            "end": {
-              "line": 3,
-              "column": 113,
-              "offset": 214
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 102
-        },
-        "end": {
-          "line": 3,
-          "column": 113,
-          "offset": 214
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": "An example",
-          "url": "http://example.com",
-          "children": [
-            {
-              "type": "image",
-              "title": null,
-              "url": "https://img.shields.io/badge/style-flat--squared-green.svg?style=flat-square",
-              "alt": "Be Square",
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 2,
-                  "offset": 217
-                },
-                "end": {
-                  "line": 5,
-                  "column": 92,
-                  "offset": 307
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 216
-            },
-            "end": {
-              "line": 5,
-              "column": 126,
-              "offset": 341
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 216
-        },
-        "end": {
-          "line": 5,
-          "column": 126,
-          "offset": 341
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 342
-    }
-  }
-}
diff --git a/test/fixtures/tree/image-with-pipe.json b/test/fixtures/tree/image-with-pipe.json
deleted file mode 100644
index a34cc649e..000000000
--- a/test/fixtures/tree/image-with-pipe.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "f|",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 3,
-          "offset": 2
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 1,
-      "column": 3,
-      "offset": 2
-    }
-  }
-}
diff --git a/test/fixtures/tree/images.output.noreference-images.json b/test/fixtures/tree/images.output.noreference-images.json
deleted file mode 100644
index 886c0e7b9..000000000
--- a/test/fixtures/tree/images.output.noreference-images.json
+++ /dev/null
@@ -1,252 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Lorem ipsum dolor sit ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 23,
-              "offset": 22
-            }
-          }
-        },
-        {
-          "type": "image",
-          "title": "Amet",
-          "url": "http://amet.com/amet.jpeg",
-          "alt": "amet",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 23,
-              "offset": 22
-            },
-            "end": {
-              "line": 1,
-              "column": 64,
-              "offset": 63
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ", consectetur adipiscing elit. Praesent dictum purus ullamcorper ligula semper pellentesque.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 64,
-              "offset": 63
-            },
-            "end": {
-              "line": 1,
-              "column": 156,
-              "offset": 155
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 156,
-          "offset": 155
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Nulla ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 157
-            },
-            "end": {
-              "line": 3,
-              "column": 7,
-              "offset": 163
-            }
-          }
-        },
-        {
-          "type": "image",
-          "title": "Finibus",
-          "url": "http://finibus.com/finibus.png",
-          "alt": "finibus",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 7,
-              "offset": 163
-            },
-            "end": {
-              "line": 3,
-              "column": 59,
-              "offset": 215
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": " neque et diam rhoncus convallis. Nam dictum sapien nec sem ultrices fermentum. Nulla ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 59,
-              "offset": 215
-            },
-            "end": {
-              "line": 3,
-              "column": 145,
-              "offset": 301
-            }
-          }
-        },
-        {
-          "type": "image",
-          "title": "Facilisi",
-          "url": "http://facilisi.com/facilisi.gif",
-          "alt": "facilisi",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 145,
-              "offset": 301
-            },
-            "end": {
-              "line": 3,
-              "column": 201,
-              "offset": 357
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ". In et feugiat massa.",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 201,
-              "offset": 357
-            },
-            "end": {
-              "line": 3,
-              "column": 223,
-              "offset": 379
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 157
-        },
-        "end": {
-          "line": 3,
-          "column": 223,
-          "offset": 379
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Donec sed sodales metus, ut aliquet quam. Suspendisse nec ipsum risus. Interdum et malesuada fames ac ante ipsum primis in ",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 381
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-            "end": {
-              "line": 5,
-              "column": 124,
-              "offset": 504
-            }
-          }
-        },
-        {
-          "type": "image",
-          "title": "Faucibus",
-          "url": "http://faucibus.com/faucibus.tiff",
-          "alt": "faucibus",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 124,
-              "offset": 504
-            },
-            "end": {
-              "line": 5,
-              "column": 181,
-              "offset": 561
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 5,
-              "column": 181,
-              "offset": 561
-            },
-            "end": {
-              "line": 5,
-              "column": 182,
-              "offset": 562
-            }
-          }
-        }
-      ],
-      "position": {
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-          "line": 5,
-          "column": 1,
-          "offset": 381
-        },
-        "end": {
-          "line": 5,
-          "column": 182,
-          "offset": 562
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 563
-    }
-  }
-}
diff --git a/test/fixtures/tree/isolated-hard-break.json b/test/fixtures/tree/isolated-hard-break.json
deleted file mode 100644
index 5c793c2f3..000000000
--- a/test/fixtures/tree/isolated-hard-break.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "The previous line, which contains 2 spaces, should be considered to be empty.",
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 3
-            },
-            "end": {
-              "line": 2,
-              "column": 78,
-              "offset": 80
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 3
-        },
-        "end": {
-          "line": 2,
-          "column": 78,
-          "offset": 80
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 1,
-      "offset": 81
-    }
-  }
-}
diff --git a/test/fixtures/tree/lazy-blockquotes.json b/test/fixtures/tree/lazy-blockquotes.json
deleted file mode 100644
index 1ecd08ce4..000000000
--- a/test/fixtures/tree/lazy-blockquotes.json
+++ /dev/null
@@ -1,67 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "hi there\nbud",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 2,
-                  "column": 4,
-                  "offset": 14
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 2,
-              "column": 4,
-              "offset": 14
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 4,
-          "offset": 14
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 1,
-      "offset": 15
-    }
-  }
-}
diff --git a/test/fixtures/tree/link-in-link.json b/test/fixtures/tree/link-in-link.json
deleted file mode 100644
index 98c61752b..000000000
--- a/test/fixtures/tree/link-in-link.json
+++ /dev/null
@@ -1,189 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "http://shields.io",
-          "children": [
-            {
-              "type": "text",
-              "value": "mailto:test@example.com",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 1,
-                  "column": 27,
-                  "offset": 26
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 47,
-              "offset": 46
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 47,
-          "offset": 46
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": "mdast",
-          "url": "https://travis-ci.org/wooorm/mdast",
-          "children": [
-            {
-              "type": "text",
-              "value": "https://travis-ci.org/wooorm/mdast",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 49
-                },
-                "end": {
-                  "line": 3,
-                  "column": 36,
-                  "offset": 83
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 48
-            },
-            "end": {
-              "line": 3,
-              "column": 81,
-              "offset": 128
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 48
-        },
-        "end": {
-          "line": 3,
-          "column": 81,
-          "offset": 128
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 130
-            },
-            "end": {
-              "line": 5,
-              "column": 2,
-              "offset": 131
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": "An example",
-          "url": "http://example.com",
-          "children": [],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 2,
-              "offset": 131
-            },
-            "end": {
-              "line": 5,
-              "column": 37,
-              "offset": 166
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "](http://example.com \"An example\")",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 37,
-              "offset": 166
-            },
-            "end": {
-              "line": 5,
-              "column": 71,
-              "offset": 200
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 130
-        },
-        "end": {
-          "line": 5,
-          "column": 71,
-          "offset": 200
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 201
-    }
-  }
-}
diff --git a/test/fixtures/tree/link-spaces.json b/test/fixtures/tree/link-spaces.json
deleted file mode 100644
index 53765c3a2..000000000
--- a/test/fixtures/tree/link-spaces.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[alpha] (bravo",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 15,
-              "offset": 14
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 15,
-          "offset": 14
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "![charlie] (delta\n.com)",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 16
-            },
-            "end": {
-              "line": 4,
-              "column": 6,
-              "offset": 39
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 16
-        },
-        "end": {
-          "line": 4,
-          "column": 6,
-          "offset": 39
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[echo]\t(http://foxtrot.golf)",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 41
-            },
-            "end": {
-              "line": 6,
-              "column": 29,
-              "offset": 69
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 41
-        },
-        "end": {
-          "line": 6,
-          "column": 29,
-          "offset": 69
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "![hotel]   (india.com/juliett)",
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 71
-            },
-            "end": {
-              "line": 8,
-              "column": 31,
-              "offset": 101
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 71
-        },
-        "end": {
-          "line": 8,
-          "column": 31,
-          "offset": 101
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 9,
-      "column": 1,
-      "offset": 102
-    }
-  }
-}
diff --git a/test/fixtures/tree/link-whitespace.json b/test/fixtures/tree/link-whitespace.json
deleted file mode 100644
index 296a8490e..000000000
--- a/test/fixtures/tree/link-whitespace.json
+++ /dev/null
@@ -1,413 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[alpha](https://example.com?bravo charlie).",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 44,
-              "offset": 43
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 44,
-          "offset": 43
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[alpha](https://example.com?bravo\tcharlie).",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 45
-            },
-            "end": {
-              "line": 3,
-              "column": 44,
-              "offset": 88
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 45
-        },
-        "end": {
-          "line": 3,
-          "column": 44,
-          "offset": 88
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[alpha](https://example.com?bravo\ncharlie).",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 90
-            },
-            "end": {
-              "line": 6,
-              "column": 10,
-              "offset": 133
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 90
-        },
-        "end": {
-          "line": 6,
-          "column": 10,
-          "offset": 133
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "![alpha](https://example.com?bravo charlie).",
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 135
-            },
-            "end": {
-              "line": 8,
-              "column": 45,
-              "offset": 179
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 135
-        },
-        "end": {
-          "line": 8,
-          "column": 45,
-          "offset": 179
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "![alpha](https://example.com?bravo\tcharlie).",
-          "position": {
-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 181
-            },
-            "end": {
-              "line": 10,
-              "column": 45,
-              "offset": 225
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 181
-        },
-        "end": {
-          "line": 10,
-          "column": 45,
-          "offset": 225
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "![alpha](https://example.com?bravo\ncharlie).",
-          "position": {
-            "start": {
-              "line": 12,
-              "column": 1,
-              "offset": 227
-            },
-            "end": {
-              "line": 13,
-              "column": 10,
-              "offset": 271
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 227
-        },
-        "end": {
-          "line": 13,
-          "column": 10,
-          "offset": 271
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 1,
-              "offset": 273
-            },
-            "end": {
-              "line": 15,
-              "column": 37,
-              "offset": 309
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 273
-        },
-        "end": {
-          "line": 15,
-          "column": 37,
-          "offset": 309
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 311
-            },
-            "end": {
-              "line": 17,
-              "column": 37,
-              "offset": 347
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 311
-        },
-        "end": {
-          "line": 17,
-          "column": 37,
-          "offset": 347
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 1,
-              "offset": 349
-            },
-            "end": {
-              "line": 20,
-              "column": 10,
-              "offset": 385
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 19,
-          "column": 1,
-          "offset": 349
-        },
-        "end": {
-          "line": 20,
-          "column": 10,
-          "offset": 385
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "https://example.com?bravo charlie.",
-          "position": {
-            "start": {
-              "line": 22,
-              "column": 1,
-              "offset": 387
-            },
-            "end": {
-              "line": 22,
-              "column": 35,
-              "offset": 421
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 22,
-          "column": 1,
-          "offset": 387
-        },
-        "end": {
-          "line": 22,
-          "column": 35,
-          "offset": 421
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "https://example.com?bravo\tcharlie.",
-          "position": {
-            "start": {
-              "line": 24,
-              "column": 1,
-              "offset": 423
-            },
-            "end": {
-              "line": 24,
-              "column": 35,
-              "offset": 457
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 24,
-          "column": 1,
-          "offset": 423
-        },
-        "end": {
-          "line": 24,
-          "column": 35,
-          "offset": 457
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "https://example.com?bravo\ncharlie.",
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 1,
-              "offset": 459
-            },
-            "end": {
-              "line": 27,
-              "column": 9,
-              "offset": 493
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 26,
-          "column": 1,
-          "offset": 459
-        },
-        "end": {
-          "line": 27,
-          "column": 9,
-          "offset": 493
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 28,
-      "column": 1,
-      "offset": 494
-    }
-  }
-}
diff --git a/test/fixtures/tree/link-with-spaces.json b/test/fixtures/tree/link-with-spaces.json
deleted file mode 100644
index 8009733e3..000000000
--- a/test/fixtures/tree/link-with-spaces.json
+++ /dev/null
@@ -1,121 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./world and some spaces.html",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 40,
-              "offset": 39
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 40,
-          "offset": 39
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": "and a title",
-          "url": "./world and some spaces.html",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 42
-                },
-                "end": {
-                  "line": 3,
-                  "column": 7,
-                  "offset": 47
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 41
-            },
-            "end": {
-              "line": 3,
-              "column": 54,
-              "offset": 94
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 41
-        },
-        "end": {
-          "line": 3,
-          "column": 54,
-          "offset": 94
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 54,
-      "offset": 94
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-inline-style.json b/test/fixtures/tree/links-inline-style.json
deleted file mode 100644
index 11e4a55d9..000000000
--- a/test/fixtures/tree/links-inline-style.json
+++ /dev/null
@@ -1,507 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Just a ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 8,
-              "offset": 7
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": null,
-          "url": "/url/",
-          "children": [
-            {
-              "type": "text",
-              "value": "URL",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 9,
-                  "offset": 8
-                },
-                "end": {
-                  "line": 1,
-                  "column": 12,
-                  "offset": 11
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 8,
-              "offset": 7
-            },
-            "end": {
-              "line": 1,
-              "column": 20,
-              "offset": 19
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 20,
-              "offset": 19
-            },
-            "end": {
-              "line": 1,
-              "column": 21,
-              "offset": 20
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 21,
-          "offset": 20
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": "title",
-          "url": "/url/",
-          "children": [
-            {
-              "type": "text",
-              "value": "URL and title",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 23
-                },
-                "end": {
-                  "line": 3,
-                  "column": 15,
-                  "offset": 36
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 22
-            },
-            "end": {
-              "line": 3,
-              "column": 31,
-              "offset": 52
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 31,
-              "offset": 52
-            },
-            "end": {
-              "line": 3,
-              "column": 32,
-              "offset": 53
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 22
-        },
-        "end": {
-          "line": 3,
-          "column": 32,
-          "offset": 53
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": "title preceded by two spaces",
-          "url": "/url/",
-          "children": [
-            {
-              "type": "text",
-              "value": "URL and title",
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 2,
-                  "offset": 56
-                },
-                "end": {
-                  "line": 5,
-                  "column": 15,
-                  "offset": 69
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 55
-            },
-            "end": {
-              "line": 5,
-              "column": 55,
-              "offset": 109
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 55,
-              "offset": 109
-            },
-            "end": {
-              "line": 5,
-              "column": 56,
-              "offset": 110
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 55
-        },
-        "end": {
-          "line": 5,
-          "column": 56,
-          "offset": 110
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": "title preceded by a tab",
-          "url": "/url/",
-          "children": [
-            {
-              "type": "text",
-              "value": "URL and title",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 2,
-                  "offset": 113
-                },
-                "end": {
-                  "line": 7,
-                  "column": 15,
-                  "offset": 126
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 112
-            },
-            "end": {
-              "line": 7,
-              "column": 49,
-              "offset": 160
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 49,
-              "offset": 160
-            },
-            "end": {
-              "line": 7,
-              "column": 50,
-              "offset": 161
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 112
-        },
-        "end": {
-          "line": 7,
-          "column": 50,
-          "offset": 161
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": "title has spaces afterward",
-          "url": "/url/",
-          "children": [
-            {
-              "type": "text",
-              "value": "URL and title",
-              "position": {
-                "start": {
-                  "line": 9,
-                  "column": 2,
-                  "offset": 164
-                },
-                "end": {
-                  "line": 9,
-                  "column": 15,
-                  "offset": 177
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 163
-            },
-            "end": {
-              "line": 9,
-              "column": 54,
-              "offset": 216
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 54,
-              "offset": 216
-            },
-            "end": {
-              "line": 9,
-              "column": 55,
-              "offset": 217
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 163
-        },
-        "end": {
-          "line": 9,
-          "column": 55,
-          "offset": 217
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[URL and title]( /url/has space ).",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 219
-            },
-            "end": {
-              "line": 11,
-              "column": 35,
-              "offset": 253
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 219
-        },
-        "end": {
-          "line": 11,
-          "column": 35,
-          "offset": 253
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[URL and title]( /url/has space/ \"url has space and title\").",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 1,
-              "offset": 255
-            },
-            "end": {
-              "line": 13,
-              "column": 61,
-              "offset": 315
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 255
-        },
-        "end": {
-          "line": 13,
-          "column": 61,
-          "offset": 315
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "",
-          "children": [
-            {
-              "type": "text",
-              "value": "Empty",
-              "position": {
-                "start": {
-                  "line": 15,
-                  "column": 2,
-                  "offset": 318
-                },
-                "end": {
-                  "line": 15,
-                  "column": 7,
-                  "offset": 323
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 1,
-              "offset": 317
-            },
-            "end": {
-              "line": 15,
-              "column": 10,
-              "offset": 326
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 15,
-              "column": 10,
-              "offset": 326
-            },
-            "end": {
-              "line": 15,
-              "column": 11,
-              "offset": 327
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 15,
-          "column": 1,
-          "offset": 317
-        },
-        "end": {
-          "line": 15,
-          "column": 11,
-          "offset": 327
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 16,
-      "column": 1,
-      "offset": 328
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-reference-proto.json b/test/fixtures/tree/links-reference-proto.json
deleted file mode 100644
index 1869c541c..000000000
--- a/test/fixtures/tree/links-reference-proto.json
+++ /dev/null
@@ -1,263 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "A ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "primary",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 1,
-                  "column": 11,
-                  "offset": 10
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 22,
-              "offset": 21
-            }
-          },
-          "label": "toString",
-          "identifier": "tostring",
-          "referenceType": "full"
-        },
-        {
-          "type": "text",
-          "value": ", ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 22,
-              "offset": 21
-            },
-            "end": {
-              "line": 1,
-              "column": 24,
-              "offset": 23
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "secondary",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 25,
-                  "offset": 24
-                },
-                "end": {
-                  "line": 1,
-                  "column": 34,
-                  "offset": 33
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 24,
-              "offset": 23
-            },
-            "end": {
-              "line": 1,
-              "column": 48,
-              "offset": 47
-            }
-          },
-          "label": "constructor",
-          "identifier": "constructor",
-          "referenceType": "full"
-        },
-        {
-          "type": "text",
-          "value": ", and ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 48,
-              "offset": 47
-            },
-            "end": {
-              "line": 1,
-              "column": 54,
-              "offset": 53
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "tertiary",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 55,
-                  "offset": 54
-                },
-                "end": {
-                  "line": 1,
-                  "column": 63,
-                  "offset": 62
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 54,
-              "offset": 53
-            },
-            "end": {
-              "line": 1,
-              "column": 75,
-              "offset": 74
-            }
-          },
-          "label": "__proto__",
-          "identifier": "__proto__",
-          "referenceType": "full"
-        },
-        {
-          "type": "text",
-          "value": " link.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 75,
-              "offset": 74
-            },
-            "end": {
-              "line": 1,
-              "column": 81,
-              "offset": 80
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 81,
-          "offset": 80
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "tostring",
-      "label": "toString",
-      "title": null,
-      "url": "http://primary.com",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 82
-        },
-        "end": {
-          "line": 3,
-          "column": 31,
-          "offset": 112
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "__proto__",
-      "label": "__proto__",
-      "title": null,
-      "url": "http://tertiary.com",
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 113
-        },
-        "end": {
-          "line": 4,
-          "column": 33,
-          "offset": 145
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "constructor",
-      "label": "constructor",
-      "title": null,
-      "url": "http://secondary.com",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 146
-        },
-        "end": {
-          "line": 5,
-          "column": 36,
-          "offset": 181
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 182
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-reference-style.nooutput.json b/test/fixtures/tree/links-reference-style.nooutput.json
deleted file mode 100644
index f879a8f2b..000000000
--- a/test/fixtures/tree/links-reference-style.nooutput.json
+++ /dev/null
@@ -1,1843 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Foo [bar] ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "1",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 12,
-                  "offset": 11
-                },
-                "end": {
-                  "line": 1,
-                  "column": 13,
-                  "offset": 12
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            },
-            "end": {
-              "line": 1,
-              "column": 14,
-              "offset": 13
-            }
-          },
-          "label": "1",
-          "identifier": "1",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 14,
-              "offset": 13
-            },
-            "end": {
-              "line": 1,
-              "column": 15,
-              "offset": 14
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 15,
-          "offset": 14
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Foo ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 16
-            },
-            "end": {
-              "line": 3,
-              "column": 5,
-              "offset": 20
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "bar",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 6,
-                  "offset": 21
-                },
-                "end": {
-                  "line": 3,
-                  "column": 9,
-                  "offset": 24
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 5,
-              "offset": 20
-            },
-            "end": {
-              "line": 3,
-              "column": 13,
-              "offset": 28
-            }
-          },
-          "label": "1",
-          "identifier": "1",
-          "referenceType": "full"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 13,
-              "offset": 28
-            },
-            "end": {
-              "line": 3,
-              "column": 14,
-              "offset": 29
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 16
-        },
-        "end": {
-          "line": 3,
-          "column": 14,
-          "offset": 29
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Foo [bar]\n",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 31
-            },
-            "end": {
-              "line": 6,
-              "column": 1,
-              "offset": 41
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "1",
-              "position": {
-                "start": {
-                  "line": 6,
-                  "column": 2,
-                  "offset": 42
-                },
-                "end": {
-                  "line": 6,
-                  "column": 3,
-                  "offset": 43
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 41
-            },
-            "end": {
-              "line": 6,
-              "column": 4,
-              "offset": 44
-            }
-          },
-          "label": "1",
-          "identifier": "1",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 4,
-              "offset": 44
-            },
-            "end": {
-              "line": 6,
-              "column": 5,
-              "offset": 45
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 31
-        },
-        "end": {
-          "line": 6,
-          "column": 5,
-          "offset": 45
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "1",
-      "label": "1",
-      "title": "Title",
-      "url": "/url/",
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 47
-        },
-        "end": {
-          "line": 8,
-          "column": 20,
-          "offset": 66
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "With [embedded [brackets]] ",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 69
-            },
-            "end": {
-              "line": 11,
-              "column": 30,
-              "offset": 98
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "b",
-              "position": {
-                "start": {
-                  "line": 11,
-                  "column": 31,
-                  "offset": 99
-                },
-                "end": {
-                  "line": 11,
-                  "column": 32,
-                  "offset": 100
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 30,
-              "offset": 98
-            },
-            "end": {
-              "line": 11,
-              "column": 33,
-              "offset": 101
-            }
-          },
-          "label": "b",
-          "identifier": "b",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 33,
-              "offset": 101
-            },
-            "end": {
-              "line": 11,
-              "column": 34,
-              "offset": 102
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 69
-        },
-        "end": {
-          "line": 11,
-          "column": 34,
-          "offset": 102
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Indented ",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 1,
-              "offset": 105
-            },
-            "end": {
-              "line": 14,
-              "column": 10,
-              "offset": 114
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "once",
-              "position": {
-                "start": {
-                  "line": 14,
-                  "column": 11,
-                  "offset": 115
-                },
-                "end": {
-                  "line": 14,
-                  "column": 15,
-                  "offset": 119
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 10,
-              "offset": 114
-            },
-            "end": {
-              "line": 14,
-              "column": 18,
-              "offset": 122
-            }
-          },
-          "label": "once",
-          "identifier": "once",
-          "referenceType": "collapsed"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 18,
-              "offset": 122
-            },
-            "end": {
-              "line": 14,
-              "column": 19,
-              "offset": 123
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 105
-        },
-        "end": {
-          "line": 14,
-          "column": 19,
-          "offset": 123
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Indented ",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 1,
-              "offset": 125
-            },
-            "end": {
-              "line": 16,
-              "column": 10,
-              "offset": 134
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "twice",
-              "position": {
-                "start": {
-                  "line": 16,
-                  "column": 11,
-                  "offset": 135
-                },
-                "end": {
-                  "line": 16,
-                  "column": 16,
-                  "offset": 140
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 10,
-              "offset": 134
-            },
-            "end": {
-              "line": 16,
-              "column": 19,
-              "offset": 143
-            }
-          },
-          "label": "twice",
-          "identifier": "twice",
-          "referenceType": "collapsed"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 19,
-              "offset": 143
-            },
-            "end": {
-              "line": 16,
-              "column": 20,
-              "offset": 144
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 125
-        },
-        "end": {
-          "line": 16,
-          "column": 20,
-          "offset": 144
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Indented ",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 1,
-              "offset": 146
-            },
-            "end": {
-              "line": 18,
-              "column": 10,
-              "offset": 155
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "thrice",
-              "position": {
-                "start": {
-                  "line": 18,
-                  "column": 11,
-                  "offset": 156
-                },
-                "end": {
-                  "line": 18,
-                  "column": 17,
-                  "offset": 162
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 10,
-              "offset": 155
-            },
-            "end": {
-              "line": 18,
-              "column": 20,
-              "offset": 165
-            }
-          },
-          "label": "thrice",
-          "identifier": "thrice",
-          "referenceType": "collapsed"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 20,
-              "offset": 165
-            },
-            "end": {
-              "line": 18,
-              "column": 21,
-              "offset": 166
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 18,
-          "column": 1,
-          "offset": 146
-        },
-        "end": {
-          "line": 18,
-          "column": 21,
-          "offset": 166
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Indented [four][] times.",
-          "position": {
-            "start": {
-              "line": 20,
-              "column": 1,
-              "offset": 168
-            },
-            "end": {
-              "line": 20,
-              "column": 25,
-              "offset": 192
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 20,
-          "column": 1,
-          "offset": 168
-        },
-        "end": {
-          "line": 20,
-          "column": 25,
-          "offset": 192
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "once",
-      "label": "once",
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-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Here's another where the ",
-          "position": {
-            "start": {
-              "line": 67,
-              "column": 1,
-              "offset": 686
-            },
-            "end": {
-              "line": 67,
-              "column": 26,
-              "offset": 711
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "link\nbreaks",
-              "position": {
-                "start": {
-                  "line": 67,
-                  "column": 27,
-                  "offset": 712
-                },
-                "end": {
-                  "line": 68,
-                  "column": 7,
-                  "offset": 724
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 67,
-              "column": 26,
-              "offset": 711
-            },
-            "end": {
-              "line": 68,
-              "column": 8,
-              "offset": 725
-            }
-          },
-          "label": "link \nbreaks",
-          "identifier": "link breaks",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": " across lines, but with a line-ending space.",
-          "position": {
-            "start": {
-              "line": 68,
-              "column": 8,
-              "offset": 725
-            },
-            "end": {
-              "line": 68,
-              "column": 52,
-              "offset": 769
-            }
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-      ],
-      "position": {
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-          "line": 67,
-          "column": 1,
-          "offset": 686
-        },
-        "end": {
-          "line": 68,
-          "column": 52,
-          "offset": 769
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "link breaks",
-      "label": "link breaks",
-      "title": null,
-      "url": "/url/",
-      "position": {
-        "start": {
-          "line": 71,
-          "column": 1,
-          "offset": 772
-        },
-        "end": {
-          "line": 71,
-          "column": 21,
-          "offset": 792
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 72,
-      "column": 1,
-      "offset": 793
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-shortcut-references.nooutput.json b/test/fixtures/tree/links-shortcut-references.nooutput.json
deleted file mode 100644
index b8623a59c..000000000
--- a/test/fixtures/tree/links-shortcut-references.nooutput.json
+++ /dev/null
@@ -1,524 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is the ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 13,
-              "offset": 12
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "simple case",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 14,
-                  "offset": 13
-                },
-                "end": {
-                  "line": 1,
-                  "column": 25,
-                  "offset": 24
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 13,
-              "offset": 12
-            },
-            "end": {
-              "line": 1,
-              "column": 26,
-              "offset": 25
-            }
-          },
-          "label": "simple case",
-          "identifier": "simple case",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 26,
-              "offset": 25
-            },
-            "end": {
-              "line": 1,
-              "column": 27,
-              "offset": 26
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 27,
-          "offset": 26
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-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "simple case",
-      "label": "simple case",
-      "title": null,
-      "url": "/simple",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 28
-        },
-        "end": {
-          "line": 3,
-          "column": 23,
-          "offset": 50
-        }
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-    },
-    {
-      "type": "paragraph",
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-        {
-          "type": "text",
-          "value": "This one has a ",
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-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 54
-            },
-            "end": {
-              "line": 7,
-              "column": 16,
-              "offset": 69
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "line\nbreak",
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-                "start": {
-                  "line": 7,
-                  "column": 17,
-                  "offset": 70
-                },
-                "end": {
-                  "line": 8,
-                  "column": 6,
-                  "offset": 80
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 16,
-              "offset": 69
-            },
-            "end": {
-              "line": 8,
-              "column": 7,
-              "offset": 81
-            }
-          },
-          "label": "line\nbreak",
-          "identifier": "line break",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 7,
-              "offset": 81
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-            "end": {
-              "line": 8,
-              "column": 8,
-              "offset": 82
-            }
-          }
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-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 54
-        },
-        "end": {
-          "line": 8,
-          "column": 8,
-          "offset": 82
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This one has a ",
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-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 84
-            },
-            "end": {
-              "line": 10,
-              "column": 16,
-              "offset": 99
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "line\nbreak",
-              "position": {
-                "start": {
-                  "line": 10,
-                  "column": 17,
-                  "offset": 100
-                },
-                "end": {
-                  "line": 11,
-                  "column": 6,
-                  "offset": 111
-                }
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-            }
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-          "position": {
-            "start": {
-              "line": 10,
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-              "offset": 99
-            },
-            "end": {
-              "line": 11,
-              "column": 7,
-              "offset": 112
-            }
-          },
-          "label": "line \nbreak",
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-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": " with a line-ending space.",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 7,
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-            },
-            "end": {
-              "line": 11,
-              "column": 33,
-              "offset": 138
-            }
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-      "position": {
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-          "line": 10,
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-          "line": 11,
-          "column": 33,
-          "offset": 138
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "line break",
-      "label": "line break",
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-      "url": "/foo",
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-          "line": 13,
-          "column": 1,
-          "offset": 140
-        },
-        "end": {
-          "line": 13,
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-          "offset": 158
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "this",
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-                "start": {
-                  "line": 16,
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-                "end": {
-                  "line": 16,
-                  "column": 6,
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-          "position": {
-            "start": {
-              "line": 16,
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-            "end": {
-              "line": 16,
-              "column": 7,
-              "offset": 167
-            }
-          },
-          "label": "this",
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-        {
-          "type": "text",
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-              "line": 16,
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-              "offset": 168
-            }
-          }
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-        {
-          "type": "linkReference",
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-              "type": "text",
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-                "start": {
-                  "line": 16,
-                  "column": 9,
-                  "offset": 169
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-                  "line": 16,
-                  "column": 13,
-                  "offset": 173
-                }
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-          ],
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-              "line": 16,
-              "column": 8,
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-            },
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-              "column": 14,
-              "offset": 174
-            }
-          },
-          "label": "that",
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-        {
-          "type": "text",
-          "value": " and the ",
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-            "start": {
-              "line": 16,
-              "column": 14,
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-            },
-            "end": {
-              "line": 16,
-              "column": 23,
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-            }
-          }
-        },
-        {
-          "type": "linkReference",
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-              "type": "text",
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-                  "line": 16,
-                  "column": 24,
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-                },
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-                  "line": 16,
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-                }
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-          "line": 16,
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-      "type": "definition",
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-          "line": 18,
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-        },
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-          "line": 18,
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-        }
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-    {
-      "type": "definition",
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-        }
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-    {
-      "type": "definition",
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-      "label": "other",
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-      "url": "/other",
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-          "offset": 220
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-        "end": {
-          "line": 20,
-          "column": 16,
-          "offset": 235
-        }
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-  ],
-  "position": {
-    "start": {
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-      "column": 1,
-      "offset": 236
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-text-delimiters.json b/test/fixtures/tree/links-text-delimiters.json
deleted file mode 100644
index b9ddbc157..000000000
--- a/test/fixtures/tree/links-text-delimiters.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./hello-world.html",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello [world]!",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 16,
-                  "offset": 15
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
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-            "end": {
-              "line": 1,
-              "column": 37,
-              "offset": 36
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 1,
-              "column": 37,
-              "offset": 36
-            },
-            "end": {
-              "line": 1,
-              "column": 38,
-              "offset": 37
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
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-        "end": {
-          "line": 1,
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-          "offset": 37
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-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./hello-world.html",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello [world]!",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 40
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-                "end": {
-                  "line": 3,
-                  "column": 16,
-                  "offset": 54
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-            "end": {
-              "line": 3,
-              "column": 39,
-              "offset": 77
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-        },
-        {
-          "type": "text",
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-              "line": 3,
-              "column": 39,
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-            "end": {
-              "line": 3,
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-      "position": {
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-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": null,
-          "url": "./hello-world.html",
-          "alt": "Hello [world]!",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 80
-            },
-            "end": {
-              "line": 5,
-              "column": 38,
-              "offset": 117
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-        },
-        {
-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 5,
-              "column": 38,
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-            "end": {
-              "line": 5,
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-      ],
-      "position": {
-        "start": {
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-          "offset": 80
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-    },
-    {
-      "type": "paragraph",
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-          "type": "image",
-          "title": null,
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-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 120
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-            "end": {
-              "line": 7,
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-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 7,
-              "column": 40,
-              "offset": 159
-            },
-            "end": {
-              "line": 7,
-              "column": 41,
-              "offset": 160
-            }
-          }
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-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
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-        "end": {
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-          "offset": 160
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-      }
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-  "position": {
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-      "line": 1,
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-    },
-    "end": {
-      "line": 8,
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-      "offset": 161
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-text-empty.json b/test/fixtures/tree/links-text-empty.json
deleted file mode 100644
index fe4075bbf..000000000
--- a/test/fixtures/tree/links-text-empty.json
+++ /dev/null
@@ -1,221 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./hello-world.html",
-          "children": [],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 23,
-              "offset": 22
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 23,
-              "offset": 22
-            },
-            "end": {
-              "line": 1,
-              "column": 24,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
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-          "line": 1,
-          "column": 24,
-          "offset": 23
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
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-          "url": "./hello-world.html",
-          "children": [],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 25
-            },
-            "end": {
-              "line": 3,
-              "column": 25,
-              "offset": 49
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 3,
-              "column": 25,
-              "offset": 49
-            },
-            "end": {
-              "line": 3,
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-              "offset": 50
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-          "line": 3,
-          "column": 1,
-          "offset": 25
-        },
-        "end": {
-          "line": 3,
-          "column": 26,
-          "offset": 50
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": null,
-          "url": "./hello-world.html",
-          "alt": "",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 52
-            },
-            "end": {
-              "line": 5,
-              "column": 24,
-              "offset": 75
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diff --git a/test/fixtures/tree/links-text-entity-delimiters.json b/test/fixtures/tree/links-text-entity-delimiters.json
deleted file mode 100644
index e992ad223..000000000
--- a/test/fixtures/tree/links-text-entity-delimiters.json
+++ /dev/null
@@ -1,493 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-text-escaped-delimiters.json b/test/fixtures/tree/links-text-escaped-delimiters.json
deleted file mode 100644
index 00dc863a5..000000000
--- a/test/fixtures/tree/links-text-escaped-delimiters.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-text-mismatched-delimiters.json b/test/fixtures/tree/links-text-mismatched-delimiters.json
deleted file mode 100644
index 44fca7e14..000000000
--- a/test/fixtures/tree/links-text-mismatched-delimiters.json
+++ /dev/null
@@ -1,353 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-title-double-quotes-delimiters.json b/test/fixtures/tree/links-title-double-quotes-delimiters.json
deleted file mode 100644
index bf50d8e7c..000000000
--- a/test/fixtures/tree/links-title-double-quotes-delimiters.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-title-double-quotes-entity-delimiters.json b/test/fixtures/tree/links-title-double-quotes-entity-delimiters.json
deleted file mode 100644
index b1f0c5057..000000000
--- a/test/fixtures/tree/links-title-double-quotes-entity-delimiters.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
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-          "type": "link",
-          "title": "Hello \"World\" Hello!",
-          "url": "./world.html",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
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-          "url": "./world.html",
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diff --git a/test/fixtures/tree/links-title-double-quotes-escaped-delimiters.json b/test/fixtures/tree/links-title-double-quotes-escaped-delimiters.json
deleted file mode 100644
index 74b589a98..000000000
--- a/test/fixtures/tree/links-title-double-quotes-escaped-delimiters.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
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-          "title": "Hello \"World\" Hello!",
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diff --git a/test/fixtures/tree/links-title-double-quotes-mismatched-delimiters.json b/test/fixtures/tree/links-title-double-quotes-mismatched-delimiters.json
deleted file mode 100644
index eead084e1..000000000
--- a/test/fixtures/tree/links-title-double-quotes-mismatched-delimiters.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
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-          "type": "text",
-          "value": "[Hello](./world.html \"Hello \"World Hello!\").",
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-            "start": {
-              "line": 1,
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-              "offset": 0
-            },
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-          "value": "[Hello](<./world.html> \"Hello \"World Hello!\").",
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-            "start": {
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-              "column": 1,
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diff --git a/test/fixtures/tree/links-title-double-quotes.json b/test/fixtures/tree/links-title-double-quotes.json
deleted file mode 100644
index a4e96f50b..000000000
--- a/test/fixtures/tree/links-title-double-quotes.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": "Hello World!",
-          "url": "./world.html",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
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deleted file mode 100644
index 57fa45f60..000000000
--- a/test/fixtures/tree/links-title-empty-double-quotes.json
+++ /dev/null
@@ -1,255 +0,0 @@
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diff --git a/test/fixtures/tree/links-title-empty-parentheses.json b/test/fixtures/tree/links-title-empty-parentheses.json
deleted file mode 100644
index 57fa45f60..000000000
--- a/test/fixtures/tree/links-title-empty-parentheses.json
+++ /dev/null
@@ -1,255 +0,0 @@
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deleted file mode 100644
index 57fa45f60..000000000
--- a/test/fixtures/tree/links-title-empty-single-quotes.json
+++ /dev/null
@@ -1,255 +0,0 @@
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diff --git a/test/fixtures/tree/links-title-parentheses.json b/test/fixtures/tree/links-title-parentheses.json
deleted file mode 100644
index a4e96f50b..000000000
--- a/test/fixtures/tree/links-title-parentheses.json
+++ /dev/null
@@ -1,255 +0,0 @@
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diff --git a/test/fixtures/tree/links-title-single-quotes-delimiters.json b/test/fixtures/tree/links-title-single-quotes-delimiters.json
deleted file mode 100644
index cf1eb6781..000000000
--- a/test/fixtures/tree/links-title-single-quotes-delimiters.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-title-single-quotes-entity-delimiters.json b/test/fixtures/tree/links-title-single-quotes-entity-delimiters.json
deleted file mode 100644
index 6dc56019c..000000000
--- a/test/fixtures/tree/links-title-single-quotes-entity-delimiters.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
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-          "title": "Hello 'World' Hello!",
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diff --git a/test/fixtures/tree/links-title-single-quotes-escaped-delimiters.json b/test/fixtures/tree/links-title-single-quotes-escaped-delimiters.json
deleted file mode 100644
index 7edd374df..000000000
--- a/test/fixtures/tree/links-title-single-quotes-escaped-delimiters.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-title-single-quotes-mismatched-delimiters.json b/test/fixtures/tree/links-title-single-quotes-mismatched-delimiters.json
deleted file mode 100644
index 108eada49..000000000
--- a/test/fixtures/tree/links-title-single-quotes-mismatched-delimiters.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-title-single-quotes.json b/test/fixtures/tree/links-title-single-quotes.json
deleted file mode 100644
index a4e96f50b..000000000
--- a/test/fixtures/tree/links-title-single-quotes.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-title-unclosed.json b/test/fixtures/tree/links-title-unclosed.json
deleted file mode 100644
index dd42490ee..000000000
--- a/test/fixtures/tree/links-title-unclosed.json
+++ /dev/null
@@ -1,413 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-url-empty-title-double-quotes.json b/test/fixtures/tree/links-url-empty-title-double-quotes.json
deleted file mode 100644
index c19fda55c..000000000
--- a/test/fixtures/tree/links-url-empty-title-double-quotes.json
+++ /dev/null
@@ -1,374 +0,0 @@
-{
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deleted file mode 100644
index 19cdfd2ab..000000000
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diff --git a/test/fixtures/tree/links-url-empty-title-single-quotes.json b/test/fixtures/tree/links-url-empty-title-single-quotes.json
deleted file mode 100644
index aa7167304..000000000
--- a/test/fixtures/tree/links-url-empty-title-single-quotes.json
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@@ -1,374 +0,0 @@
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deleted file mode 100644
index 461722ad4..000000000
--- a/test/fixtures/tree/links-url-empty.json
+++ /dev/null
@@ -1,255 +0,0 @@
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diff --git a/test/fixtures/tree/links-url-entities.json b/test/fixtures/tree/links-url-entities.json
deleted file mode 100644
index 257c374f1..000000000
--- a/test/fixtures/tree/links-url-entities.json
+++ /dev/null
@@ -1,255 +0,0 @@
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-          "type": "link",
-          "title": null,
-          "url": "http://www.example.com?param=1®ion=here",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 52,
-              "offset": 51
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 52,
-              "offset": 51
-            },
-            "end": {
-              "line": 1,
-              "column": 53,
-              "offset": 52
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 53,
-          "offset": 52
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "http://www.example.com?param=1®ion=here",
-          "children": [
-            {
-              "type": "text",
-              "value": "World",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 55
-                },
-                "end": {
-                  "line": 3,
-                  "column": 7,
-                  "offset": 60
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 54
-            },
-            "end": {
-              "line": 3,
-              "column": 54,
-              "offset": 107
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 54,
-              "offset": 107
-            },
-            "end": {
-              "line": 3,
-              "column": 55,
-              "offset": 108
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 54
-        },
-        "end": {
-          "line": 3,
-          "column": 55,
-          "offset": 108
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": null,
-          "url": "http://www.example.com?param=1®ion=here",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 110
-            },
-            "end": {
-              "line": 5,
-              "column": 53,
-              "offset": 162
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 53,
-              "offset": 162
-            },
-            "end": {
-              "line": 5,
-              "column": 54,
-              "offset": 163
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 110
-        },
-        "end": {
-          "line": 5,
-          "column": 54,
-          "offset": 163
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": null,
-          "url": "http://www.example.com?param=1®ion=here",
-          "alt": "World",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 165
-            },
-            "end": {
-              "line": 7,
-              "column": 55,
-              "offset": 219
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 55,
-              "offset": 219
-            },
-            "end": {
-              "line": 7,
-              "column": 56,
-              "offset": 220
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 165
-        },
-        "end": {
-          "line": 7,
-          "column": 56,
-          "offset": 220
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 8,
-      "column": 1,
-      "offset": 221
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-url-entity-parentheses.json b/test/fixtures/tree/links-url-entity-parentheses.json
deleted file mode 100644
index 8a57fc885..000000000
--- a/test/fixtures/tree/links-url-entity-parentheses.json
+++ /dev/null
@@ -1,969 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./world(and-hello(world)",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 49,
-              "offset": 48
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 49,
-              "offset": 48
-            },
-            "end": {
-              "line": 1,
-              "column": 50,
-              "offset": 49
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 50,
-          "offset": 49
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./world(and-hello(world)",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 52
-                },
-                "end": {
-                  "line": 3,
-                  "column": 7,
-                  "offset": 57
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 51
-            },
-            "end": {
-              "line": 3,
-              "column": 51,
-              "offset": 101
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 51,
-              "offset": 101
-            },
-            "end": {
-              "line": 3,
-              "column": 52,
-              "offset": 102
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 51
-        },
-        "end": {
-          "line": 3,
-          "column": 52,
-          "offset": 102
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./world(and)helloworld)",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 2,
-                  "offset": 105
-                },
-                "end": {
-                  "line": 5,
-                  "column": 7,
-                  "offset": 110
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 104
-            },
-            "end": {
-              "line": 5,
-              "column": 48,
-              "offset": 151
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 48,
-              "offset": 151
-            },
-            "end": {
-              "line": 5,
-              "column": 49,
-              "offset": 152
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 104
-        },
-        "end": {
-          "line": 5,
-          "column": 49,
-          "offset": 152
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./world(and)helloworld)",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 2,
-                  "offset": 155
-                },
-                "end": {
-                  "line": 7,
-                  "column": 7,
-                  "offset": 160
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 154
-            },
-            "end": {
-              "line": 7,
-              "column": 50,
-              "offset": 203
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 7,
-              "column": 50,
-              "offset": 203
-            },
-            "end": {
-              "line": 7,
-              "column": 51,
-              "offset": 204
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 154
-        },
-        "end": {
-          "line": 7,
-          "column": 51,
-          "offset": 204
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./world(and-hello(world)",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 9,
-                  "column": 2,
-                  "offset": 207
-                },
-                "end": {
-                  "line": 9,
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-                  "offset": 212
-                }
-              }
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-          "position": {
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-              "line": 9,
-              "column": 1,
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-            },
-            "end": {
-              "line": 9,
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-              "offset": 254
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
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-              "line": 9,
-              "column": 49,
-              "offset": 254
-            },
-            "end": {
-              "line": 9,
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-              "offset": 255
-            }
-          }
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-        "end": {
-          "line": 9,
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-          "offset": 255
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-      }
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-      "children": [
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-          "type": "link",
-          "title": null,
-          "url": "./world(and-hello(world)",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
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-                  "column": 2,
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-                "end": {
-                  "line": 11,
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-          "position": {
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-              "line": 11,
-              "column": 51,
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-            }
-          }
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-          "type": "text",
-          "value": ".",
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-              "column": 51,
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-            }
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-          "line": 11,
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-      "children": [
-        {
-          "type": "link",
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-          "url": "./world(and)helloworld)",
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-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 13,
-                  "column": 2,
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-                "end": {
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-                  "column": 7,
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-            }
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-              "line": 13,
-              "column": 48,
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-              "line": 13,
-              "column": 49,
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-            }
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-        }
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-      "type": "paragraph",
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-          "type": "link",
-          "title": null,
-          "url": "./world(and)helloworld)",
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-            {
-              "type": "text",
-              "value": "Hello",
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-                "start": {
-                  "line": 15,
-                  "column": 2,
-                  "offset": 361
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-                "end": {
-                  "line": 15,
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-            "start": {
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-              "offset": 360
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-            "end": {
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-              "offset": 409
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 15,
-              "column": 50,
-              "offset": 409
-            },
-            "end": {
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-              "column": 51,
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-            }
-          }
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-      ],
-      "position": {
-        "start": {
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-          "column": 1,
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-        },
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-          "column": 51,
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-        }
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-    {
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-          "type": "image",
-          "title": null,
-          "url": "./world(and-hello(world)",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 17,
-              "column": 1,
-              "offset": 412
-            },
-            "end": {
-              "line": 17,
-              "column": 50,
-              "offset": 461
-            }
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-        },
-        {
-          "type": "text",
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-            "start": {
-              "line": 17,
-              "column": 50,
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-              "line": 17,
-              "column": 51,
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-            }
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-      "position": {
-        "start": {
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-        }
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-      "type": "paragraph",
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-        {
-          "type": "image",
-          "title": null,
-          "url": "./world(and-hello(world)",
-          "alt": "Hello",
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-            "start": {
-              "line": 19,
-              "column": 1,
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-            }
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-        }
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-          "alt": "Hello",
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-              "line": 21,
-              "column": 1,
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-            },
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-            }
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-            },
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-        }
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-          "alt": "Hello",
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-              "line": 23,
-              "column": 1,
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-            },
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-          "title": null,
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-          "alt": "Hello",
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-            "start": {
-              "line": 25,
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-              "offset": 622
-            },
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-            }
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-            },
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-          }
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diff --git a/test/fixtures/tree/links-url-escaped-parentheses.json b/test/fixtures/tree/links-url-escaped-parentheses.json
deleted file mode 100644
index 8bdd8f4e0..000000000
--- a/test/fixtures/tree/links-url-escaped-parentheses.json
+++ /dev/null
@@ -1,493 +0,0 @@
-{
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diff --git a/test/fixtures/tree/links-url-mismatched-parentheses.json b/test/fixtures/tree/links-url-mismatched-parentheses.json
deleted file mode 100644
index ec68a10f2..000000000
--- a/test/fixtures/tree/links-url-mismatched-parentheses.json
+++ /dev/null
@@ -1,440 +0,0 @@
-{
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-        {
-          "type": "text",
-          "value": ".",
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diff --git a/test/fixtures/tree/links-url-nested-parentheses.json b/test/fixtures/tree/links-url-nested-parentheses.json
deleted file mode 100644
index 5a302e99c..000000000
--- a/test/fixtures/tree/links-url-nested-parentheses.json
+++ /dev/null
@@ -1,255 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./world(and)hello(world)",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            }
-          ],
-          "position": {
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-              "column": 1,
-              "offset": 0
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-            "end": {
-              "line": 1,
-              "column": 34,
-              "offset": 33
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 34,
-              "offset": 33
-            },
-            "end": {
-              "line": 1,
-              "column": 35,
-              "offset": 34
-            }
-          }
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-      ],
-      "position": {
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-          "offset": 0
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-        "end": {
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-          "column": 35,
-          "offset": 34
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./world(and)hello(world)",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 37
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-                  "line": 3,
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-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": null,
-          "url": "./world(and)hello(world)",
-          "alt": "Hello",
-          "position": {
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-              "line": 5,
-              "column": 1,
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-    {
-      "type": "paragraph",
-      "children": [
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-          "type": "image",
-          "title": null,
-          "url": "./world(and)hello(world)",
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-            }
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-      "position": {
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-          "line": 7,
-          "column": 38,
-          "offset": 148
-        }
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-  ],
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-      "column": 1,
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-    }
-  }
-}
diff --git a/test/fixtures/tree/links-url-new-line.json b/test/fixtures/tree/links-url-new-line.json
deleted file mode 100644
index b60378d2b..000000000
--- a/test/fixtures/tree/links-url-new-line.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[Hello](./wo\nrld.html).",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 2,
-              "column": 11,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 11,
-          "offset": 23
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[Hello](<./wo\nrld.html>).",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 25
-            },
-            "end": {
-              "line": 5,
-              "column": 12,
-              "offset": 50
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-          "offset": 50
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "![Hello](./wo\nrld.png).",
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-              "column": 1,
-              "offset": 52
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-            "end": {
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-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "![Hello](<./wo\nrld.png>).",
-          "position": {
-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 77
-            },
-            "end": {
-              "line": 11,
-              "column": 11,
-              "offset": 102
-            }
-          }
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-      "position": {
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-          "column": 1,
-          "offset": 77
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-        "end": {
-          "line": 11,
-          "column": 11,
-          "offset": 102
-        }
-      }
-    }
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-  "position": {
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-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 12,
-      "column": 1,
-      "offset": 103
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-url-unclosed.json b/test/fixtures/tree/links-url-unclosed.json
deleted file mode 100644
index 10a93704a..000000000
--- a/test/fixtures/tree/links-url-unclosed.json
+++ /dev/null
@@ -1,149 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[Hello](",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 9,
-              "offset": 8
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 9,
-          "offset": 8
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[World](<",
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-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 11
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-            "end": {
-              "line": 4,
-              "column": 10,
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-          "offset": 20
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
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-          "type": "text",
-          "value": "![Hello](",
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-              "column": 1,
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-      "type": "paragraph",
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-          "value": "![World](<",
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-      "offset": 46
-    }
-  }
-}
diff --git a/test/fixtures/tree/links-url-white-space.json b/test/fixtures/tree/links-url-white-space.json
deleted file mode 100644
index 4f4c82294..000000000
--- a/test/fixtures/tree/links-url-white-space.json
+++ /dev/null
@@ -1,202 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[Hello](./wo rld.html).",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 24,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
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-          "line": 1,
-          "column": 1,
-          "offset": 0
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-          "line": 1,
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-          "offset": 23
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "./wo rld.html",
-          "children": [
-            {
-              "type": "text",
-              "value": "Hello",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 26
-                },
-                "end": {
-                  "line": 3,
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-          "url": "./wo rld.png",
-          "alt": "Hello",
-          "position": {
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diff --git a/test/fixtures/tree/links.output.noreference-links.json b/test/fixtures/tree/links.output.noreference-links.json
deleted file mode 100644
index dd2bea5ca..000000000
--- a/test/fixtures/tree/links.output.noreference-links.json
+++ /dev/null
@@ -1,320 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Lorem ipsum dolor sit ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 23,
-              "offset": 22
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": "Amet",
-          "url": "http://amet.com",
-          "children": [
-            {
-              "type": "text",
-              "value": "amet",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 24,
-                  "offset": 23
-                },
-                "end": {
-                  "line": 1,
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-                  "offset": 27
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-            "end": {
-              "line": 1,
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-              "offset": 52
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ", consectetur adipiscing elit. Praesent dictum purus ullamcorper ligula semper pellentesque.",
-          "position": {
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-      "children": [
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-          "type": "text",
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-            "end": {
-              "line": 3,
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-              "offset": 152
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": "Finibus",
-          "url": "http://finibus.com",
-          "children": [
-            {
-              "type": "text",
-              "value": "finibus",
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-          "value": " neque et diam rhoncus convallis. Nam dictum sapien nec sem ultrices fermentum. Nulla ",
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-            "end": {
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-              "column": 132,
-              "offset": 277
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": "Facilisi",
-          "url": "http://facilisi.com",
-          "children": [
-            {
-              "type": "text",
-              "value": "facilisi",
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-        },
-        {
-          "type": "text",
-          "value": ". In et feugiat massa.",
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-              "offset": 319
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-            "end": {
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-              "column": 196,
-              "offset": 341
-            }
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-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 146
-        },
-        "end": {
-          "line": 3,
-          "column": 196,
-          "offset": 341
-        }
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-      "type": "paragraph",
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-        {
-          "type": "text",
-          "value": "Donec sed sodales metus, ut aliquet quam. Suspendisse nec ipsum risus. Interdum et malesuada fames ac ante ipsum primis in ",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 343
-            },
-            "end": {
-              "line": 5,
-              "column": 124,
-              "offset": 466
-            }
-          }
-        },
-        {
-          "type": "link",
-          "title": "Faucibus",
-          "url": "http://faucibus.com",
-          "children": [
-            {
-              "type": "text",
-              "value": "faucibus",
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 125,
-                  "offset": 467
-                },
-                "end": {
-                  "line": 5,
-                  "column": 133,
-                  "offset": 475
-                }
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-              "column": 124,
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-              "line": 5,
-              "column": 166,
-              "offset": 508
-            }
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-        {
-          "type": "text",
-          "value": ".",
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-            "start": {
-              "line": 5,
-              "column": 166,
-              "offset": 508
-            },
-            "end": {
-              "line": 5,
-              "column": 167,
-              "offset": 509
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-      "position": {
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-}
diff --git a/test/fixtures/tree/list-after-list.json b/test/fixtures/tree/list-after-list.json
deleted file mode 100644
index 43b719a90..000000000
--- a/test/fixtures/tree/list-after-list.json
+++ /dev/null
@@ -1,736 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "item",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 3,
-                      "offset": 2
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 7,
-                      "offset": 6
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
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-              }
-            }
-          ],
-          "position": {
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-              "line": 1,
-              "column": 1,
-              "offset": 0
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-            "end": {
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-              "column": 7,
-              "offset": 6
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-          "checked": null,
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-              "type": "paragraph",
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-                  "type": "text",
-                  "value": "item",
-                  "position": {
-                    "start": {
-                      "line": 2,
-                      "column": 3,
-                      "offset": 9
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-                    "end": {
-                      "line": 2,
-                      "column": 7,
-                      "offset": 13
-                    }
-                  }
-                }
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-              "position": {
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-                  "offset": 13
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-            "end": {
-              "line": 2,
-              "column": 7,
-              "offset": 13
-            }
-          }
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-        {
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-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "item",
-                  "position": {
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-                      "column": 3,
-                      "offset": 16
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-                    "end": {
-                      "line": 3,
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-                      "offset": 20
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-                "end": {
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-                  "offset": 20
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-              }
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-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 14
-            },
-            "end": {
-              "line": 3,
-              "column": 7,
-              "offset": 20
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 7,
-          "offset": 20
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
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-      "type": "thematicBreak",
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-      "type": "list",
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-      "start": null,
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-          "children": [
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-              }
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-            "end": {
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-            }
-          }
-        },
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-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "item",
-                  "position": {
-                    "start": {
-                      "line": 15,
-                      "column": 4,
-                      "offset": 84
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-                    "end": {
-                      "line": 15,
-                      "column": 8,
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-                    }
-                  }
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-                },
-                "end": {
-                  "line": 15,
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-                  "offset": 88
-                }
-              }
-            }
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-            "end": {
-              "line": 15,
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-          }
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-          "type": "listItem",
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-          "checked": null,
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-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
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-                    "start": {
-                      "line": 16,
-                      "column": 4,
-                      "offset": 92
-                    },
-                    "end": {
-                      "line": 16,
-                      "column": 8,
-                      "offset": 96
-                    }
-                  }
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-              ],
-              "position": {
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-                  "column": 4,
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-                },
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-                  "line": 16,
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-                  "offset": 96
-                }
-              }
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-              "offset": 89
-            },
-            "end": {
-              "line": 16,
-              "column": 8,
-              "offset": 96
-            }
-          }
-        }
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-      "position": {
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-          "line": 14,
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-        "end": {
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diff --git a/test/fixtures/tree/list-and-code.json b/test/fixtures/tree/list-and-code.json
deleted file mode 100644
index 865f31069..000000000
--- a/test/fixtures/tree/list-and-code.json
+++ /dev/null
@@ -1,122 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "This is a list item",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 5,
-                      "offset": 4
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 24,
-                      "offset": 23
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                },
-                "end": {
-                  "line": 1,
-                  "column": 24,
-                  "offset": 23
-                }
-              }
-            },
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "This is code",
-                  "position": {
-                    "start": {
-                      "line": 4,
-                      "column": 5,
-                      "offset": 30
-                    },
-                    "end": {
-                      "line": 4,
-                      "column": 17,
-                      "offset": 42
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 5,
-                  "offset": 30
-                },
-                "end": {
-                  "line": 4,
-                  "column": 17,
-                  "offset": 42
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 4,
-              "column": 17,
-              "offset": 42
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 4,
-          "column": 17,
-          "offset": 42
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 5,
-      "column": 1,
-      "offset": 43
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-continuation.json b/test/fixtures/tree/list-continuation.json
deleted file mode 100644
index ad33a570a..000000000
--- a/test/fixtures/tree/list-continuation.json
+++ /dev/null
@@ -1,318 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 4,
-                      "offset": 3
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 7,
-                      "offset": 6
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          }
-        }
-      ],
-      "position": {
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-        },
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diff --git a/test/fixtures/tree/list-indentation.nooutput.json b/test/fixtures/tree/list-indentation.nooutput.json
deleted file mode 100644
index 8385ecefe..000000000
--- a/test/fixtures/tree/list-indentation.nooutput.json
+++ /dev/null
@@ -1,889 +0,0 @@
-{
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-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "code",
-              "lang": null,
-              "meta": null,
-              "value": "Hello 5b\n\nWorld 5b.",
-              "position": {
-                "start": {
-                  "line": 37,
-                  "column": 3,
-                  "offset": 254
-                },
-                "end": {
-                  "line": 39,
-                  "column": 16,
-                  "offset": 283
-                }
-              }
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-          "position": {
-            "start": {
-              "line": 37,
-              "column": 1,
-              "offset": 252
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-            "end": {
-              "line": 39,
-              "column": 16,
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-      "position": {
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-          "line": 29,
-          "column": 1,
-          "offset": 189
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-        "end": {
-          "line": 39,
-          "column": 16,
-          "offset": 283
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-  "position": {
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-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 40,
-      "column": 1,
-      "offset": 284
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-interrupt.json b/test/fixtures/tree/list-interrupt.json
deleted file mode 100644
index 66b55d9c1..000000000
--- a/test/fixtures/tree/list-interrupt.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Something",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 3,
-                      "offset": 2
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 12,
-                      "offset": 11
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 12,
-                  "offset": 11
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 12,
-              "offset": 11
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 12,
-          "offset": 11
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 3,
-      "children": [
-        {
-          "type": "text",
-          "value": "Some heading",
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 5,
-              "offset": 16
-            },
-            "end": {
-              "line": 2,
-              "column": 17,
-              "offset": 28
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 12
-        },
-        "end": {
-          "line": 2,
-          "column": 17,
-          "offset": 28
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
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-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 1,
-      "offset": 29
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-item-empty-with-white-space.json b/test/fixtures/tree/list-item-empty-with-white-space.json
deleted file mode 100644
index 81aa7a835..000000000
--- a/test/fixtures/tree/list-item-empty-with-white-space.json
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 3,
-          "offset": 2
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 3
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-item-empty-without-white-space-eof.json b/test/fixtures/tree/list-item-empty-without-white-space-eof.json
deleted file mode 100644
index ce8b5dcca..000000000
--- a/test/fixtures/tree/list-item-empty-without-white-space-eof.json
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 2,
-              "offset": 1
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 2,
-          "offset": 1
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 1,
-      "column": 2,
-      "offset": 1
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-item-empty-without-white-space.json b/test/fixtures/tree/list-item-empty-without-white-space.json
deleted file mode 100644
index 1cf3ea675..000000000
--- a/test/fixtures/tree/list-item-empty-without-white-space.json
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 2,
-              "offset": 1
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 2,
-          "offset": 1
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 2,
-      "column": 1,
-      "offset": 2
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-item-empty.json b/test/fixtures/tree/list-item-empty.json
deleted file mode 100644
index 24aef241c..000000000
--- a/test/fixtures/tree/list-item-empty.json
+++ /dev/null
@@ -1,281 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 5,
-                      "offset": 4
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 8,
-                      "offset": 7
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                },
-                "end": {
-                  "line": 1,
-                  "column": 8,
-                  "offset": 7
-                }
-              }
-            }
-          ],
-          "position": {
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-            "end": {
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-            "end": {
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-    }
-  }
-}
diff --git a/test/fixtures/tree/list-item-indent.list-item-indent=mixed.output.json b/test/fixtures/tree/list-item-indent.list-item-indent=mixed.output.json
deleted file mode 100644
index 0b7dcc28c..000000000
--- a/test/fixtures/tree/list-item-indent.list-item-indent=mixed.output.json
+++ /dev/null
@@ -1,705 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo bar baz.",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 4,
-                      "offset": 3
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 16,
-                      "offset": 15
-                    }
-                  }
-                }
-              ],
-              "position": {
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-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 1,
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-                  "offset": 15
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-              }
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-          "position": {
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-              "offset": 0
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-      "position": {
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-        "end": {
-          "line": 1,
-          "column": 16,
-          "offset": 15
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
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-          "line": 3,
-          "column": 1,
-          "offset": 17
-        },
-        "end": {
-          "line": 3,
-          "column": 10,
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-        }
-      }
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-    {
-      "type": "list",
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-      "start": 99,
-      "spread": false,
-      "children": [
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-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo bar baz.",
-                  "position": {
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-                      "column": 5,
-                      "offset": 32
-                    },
-                    "end": {
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-                    }
-                  }
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-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "",
-      "position": {
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-        },
-        "end": {
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-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 999,
-      "spread": false,
-      "children": [
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-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
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-                  "type": "text",
-                  "value": "foo bar baz.",
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diff --git a/test/fixtures/tree/list-item-indent.list-item-indent=one.output.json b/test/fixtures/tree/list-item-indent.list-item-indent=one.output.json
deleted file mode 100644
index 0b7dcc28c..000000000
--- a/test/fixtures/tree/list-item-indent.list-item-indent=one.output.json
+++ /dev/null
@@ -1,705 +0,0 @@
-{
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diff --git a/test/fixtures/tree/list-item-indent.list-item-indent=tab.output.json b/test/fixtures/tree/list-item-indent.list-item-indent=tab.output.json
deleted file mode 100644
index c721f687f..000000000
--- a/test/fixtures/tree/list-item-indent.list-item-indent=tab.output.json
+++ /dev/null
@@ -1,705 +0,0 @@
-{
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diff --git a/test/fixtures/tree/list-item-newline.nooutput.json b/test/fixtures/tree/list-item-newline.nooutput.json
deleted file mode 100644
index 1ea38ee3d..000000000
--- a/test/fixtures/tree/list-item-newline.nooutput.json
+++ /dev/null
@@ -1,141 +0,0 @@
-{
-  "type": "root",
-  "children": [
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-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
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-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Foo",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 5,
-                      "offset": 4
-                    },
-                    "end": {
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-        {
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-          "checked": null,
-          "children": [
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-                  "type": "text",
-                  "value": "Bar",
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-    }
-  }
-}
diff --git a/test/fixtures/tree/list-item-text.json b/test/fixtures/tree/list-item-text.json
deleted file mode 100644
index d4b66dcb1..000000000
--- a/test/fixtures/tree/list-item-text.json
+++ /dev/null
@@ -1,194 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "item1",
-                  "position": {
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-                    },
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-                  "children": [
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-                      "type": "paragraph",
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-                          "type": "text",
-                          "value": "item2",
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-                            },
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-                            }
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-                        }
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-      }
-    },
-    {
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-          "type": "text",
-          "value": "text",
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-            "start": {
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-              "offset": 26
-            },
-            "end": {
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-              "offset": 30
-            }
-          }
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-      ],
-      "position": {
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-        },
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-          "offset": 30
-        }
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-    }
-  ],
-  "position": {
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-    "end": {
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-      "offset": 31
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-  }
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diff --git a/test/fixtures/tree/list-mixed-indentation.json b/test/fixtures/tree/list-mixed-indentation.json
deleted file mode 100644
index a312ca4f2..000000000
--- a/test/fixtures/tree/list-mixed-indentation.json
+++ /dev/null
@@ -1,1375 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Mixed spaces and tabs",
-          "position": {
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-                                      "line": 30,
-                                      "column": 11,
-                                      "offset": 814
-                                    },
-                                    "end": {
-                                      "line": 30,
-                                      "column": 54,
-                                      "offset": 857
-                                    }
-                                  }
-                                }
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-                              "position": {
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-                                  "column": 11,
-                                  "offset": 814
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-                          "position": {
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-                              "column": 54,
-                              "offset": 857
-                            }
-                          }
-                        },
-                        {
-                          "type": "listItem",
-                          "spread": false,
-                          "checked": null,
-                          "children": [
-                            {
-                              "type": "paragraph",
-                              "children": [
-                                {
-                                  "type": "text",
-                                  "value": "(item 1.1.2.) item with tab + 4 spaces",
-                                  "position": {
-                                    "start": {
-                                      "line": 31,
-                                      "column": 8,
-                                      "offset": 865
-                                    },
-                                    "end": {
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-                              "column": 6,
-                              "offset": 863
-                            },
-                            "end": {
-                              "line": 31,
-                              "column": 46,
-                              "offset": 903
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-                        {
-                          "type": "listItem",
-                          "spread": false,
-                          "checked": null,
-                          "children": [
-                            {
-                              "type": "paragraph",
-                              "children": [
-                                {
-                                  "type": "text",
-                                  "value": "(item 1.1.3.) item with 4 spaces + tab",
-                                  "position": {
-                                    "start": {
-                                      "line": 32,
-                                      "column": 8,
-                                      "offset": 911
-                                    },
-                                    "end": {
-                                      "line": 32,
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-                              "offset": 949
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-                        {
-                          "type": "listItem",
-                          "spread": false,
-                          "checked": null,
-                          "children": [
-                            {
-                              "type": "paragraph",
-                              "children": [
-                                {
-                                  "type": "text",
-                                  "value": "(item 1.1.4.) item with tab + tab",
-                                  "position": {
-                                    "start": {
-                                      "line": 33,
-                                      "column": 5,
-                                      "offset": 954
-                                    },
-                                    "end": {
-                                      "line": 33,
-                                      "column": 38,
-                                      "offset": 987
-                                    }
-                                  }
-                                }
-                              ],
-                              "position": {
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-                                  "line": 33,
-                                  "column": 5,
-                                  "offset": 954
-                                },
-                                "end": {
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-                                  "column": 38,
-                                  "offset": 987
-                                }
-                              }
-                            }
-                          ],
-                          "position": {
-                            "start": {
-                              "line": 33,
-                              "column": 3,
-                              "offset": 952
-                            },
-                            "end": {
-                              "line": 33,
-                              "column": 38,
-                              "offset": 987
-                            }
-                          }
-                        },
-                        {
-                          "type": "listItem",
-                          "spread": false,
-                          "checked": null,
-                          "children": [
-                            {
-                              "type": "paragraph",
-                              "children": [
-                                {
-                                  "type": "text",
-                                  "value": "(item 1.1.5.) item with 2 spaces + tab + 2 spaces (nasty!)",
-                                  "position": {
-                                    "start": {
-                                      "line": 34,
-                                      "column": 8,
-                                      "offset": 995
-                                    },
-                                    "end": {
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-                                      "offset": 1053
-                                    }
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-                                }
-                              ],
-                              "position": {
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-                                  "line": 34,
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-                                  "offset": 995
-                                },
-                                "end": {
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-                                  "column": 66,
-                                  "offset": 1053
-                                }
-                              }
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-                          ],
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-                              "offset": 993
-                            },
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-                              "line": 34,
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-                              "offset": 1053
-                            }
-                          }
-                        }
-                      ],
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-                          "line": 30,
-                          "column": 9,
-                          "offset": 812
-                        },
-                        "end": {
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-                          "column": 66,
-                          "offset": 1053
-                        }
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-                    }
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-                    "start": {
-                      "line": 29,
-                      "column": 2,
-                      "offset": 760
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-                    "end": {
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-                      "column": 66,
-                      "offset": 1053
-                    }
-                  }
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-                  "column": 2,
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-                },
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-                  "offset": 1053
-                }
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-          ],
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-              "column": 1,
-              "offset": 702
-            },
-            "end": {
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-              "offset": 1053
-            }
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-      ],
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-        },
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-          "column": 66,
-          "offset": 1053
-        }
-      }
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-  ],
-  "position": {
-    "start": {
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-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 35,
-      "column": 1,
-      "offset": 1054
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-ordered-empty-no-space-single-item.json b/test/fixtures/tree/list-ordered-empty-no-space-single-item.json
deleted file mode 100644
index b9d4a0419..000000000
--- a/test/fixtures/tree/list-ordered-empty-no-space-single-item.json
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 3,
-          "offset": 2
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 1,
-      "column": 3,
-      "offset": 2
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-ordered-empty-no-space.json b/test/fixtures/tree/list-ordered-empty-no-space.json
deleted file mode 100644
index 8929b6f20..000000000
--- a/test/fixtures/tree/list-ordered-empty-no-space.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 3
-            },
-            "end": {
-              "line": 2,
-              "column": 3,
-              "offset": 5
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 6
-            },
-            "end": {
-              "line": 3,
-              "column": 3,
-              "offset": 8
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 9
-            },
-            "end": {
-              "line": 4,
-              "column": 3,
-              "offset": 11
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 4,
-          "column": 3,
-          "offset": 11
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 5,
-      "column": 1,
-      "offset": 12
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-ordered.increment-list-marker.output.json b/test/fixtures/tree/list-ordered.increment-list-marker.output.json
deleted file mode 100644
index 1a56928c0..000000000
--- a/test/fixtures/tree/list-ordered.increment-list-marker.output.json
+++ /dev/null
@@ -1,193 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 2,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo;",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 5,
-                      "offset": 4
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 9,
-                      "offset": 8
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                },
-                "end": {
-                  "line": 1,
-                  "column": 9,
-                  "offset": 8
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 9,
-              "offset": 8
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "bar;",
-                  "position": {
-                    "start": {
-                      "line": 2,
-                      "column": 5,
-                      "offset": 13
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 9,
-                      "offset": 17
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 2,
-                  "column": 5,
-                  "offset": 13
-                },
-                "end": {
-                  "line": 2,
-                  "column": 9,
-                  "offset": 17
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 9
-            },
-            "end": {
-              "line": 2,
-              "column": 9,
-              "offset": 17
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "baz.",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 5,
-                      "offset": 22
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 9,
-                      "offset": 26
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 5,
-                  "offset": 22
-                },
-                "end": {
-                  "line": 3,
-                  "column": 9,
-                  "offset": 26
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 18
-            },
-            "end": {
-              "line": 3,
-              "column": 9,
-              "offset": 26
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 9,
-          "offset": 26
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 27
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-ordered.noincrement-list-marker.output.json b/test/fixtures/tree/list-ordered.noincrement-list-marker.output.json
deleted file mode 100644
index 1a56928c0..000000000
--- a/test/fixtures/tree/list-ordered.noincrement-list-marker.output.json
+++ /dev/null
@@ -1,193 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 2,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo;",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 5,
-                      "offset": 4
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 9,
-                      "offset": 8
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                },
-                "end": {
-                  "line": 1,
-                  "column": 9,
-                  "offset": 8
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 9,
-              "offset": 8
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "bar;",
-                  "position": {
-                    "start": {
-                      "line": 2,
-                      "column": 5,
-                      "offset": 13
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 9,
-                      "offset": 17
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 2,
-                  "column": 5,
-                  "offset": 13
-                },
-                "end": {
-                  "line": 2,
-                  "column": 9,
-                  "offset": 17
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 9
-            },
-            "end": {
-              "line": 2,
-              "column": 9,
-              "offset": 17
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "baz.",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 5,
-                      "offset": 22
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 9,
-                      "offset": 26
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 5,
-                  "offset": 22
-                },
-                "end": {
-                  "line": 3,
-                  "column": 9,
-                  "offset": 26
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 18
-            },
-            "end": {
-              "line": 3,
-              "column": 9,
-              "offset": 26
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 9,
-          "offset": 26
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 27
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-unordered-empty-no-space-single-item.json b/test/fixtures/tree/list-unordered-empty-no-space-single-item.json
deleted file mode 100644
index ce8b5dcca..000000000
--- a/test/fixtures/tree/list-unordered-empty-no-space-single-item.json
+++ /dev/null
@@ -1,55 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 2,
-              "offset": 1
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 2,
-          "offset": 1
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 1,
-      "column": 2,
-      "offset": 1
-    }
-  }
-}
diff --git a/test/fixtures/tree/list-unordered-empty-no-space.json b/test/fixtures/tree/list-unordered-empty-no-space.json
deleted file mode 100644
index d900cb766..000000000
--- a/test/fixtures/tree/list-unordered-empty-no-space.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 2,
-              "offset": 1
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 2
-            },
-            "end": {
-              "line": 2,
-              "column": 2,
-              "offset": 3
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 4
-            },
-            "end": {
-              "line": 3,
-              "column": 2,
-              "offset": 5
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [],
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 6
-            },
-            "end": {
-              "line": 4,
-              "column": 2,
-              "offset": 7
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 4,
-          "column": 2,
-          "offset": 7
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 5,
-      "column": 1,
-      "offset": 8
-    }
-  }
-}
diff --git a/test/fixtures/tree/list.output.bullet=+.json b/test/fixtures/tree/list.output.bullet=+.json
deleted file mode 100644
index 3747d64e0..000000000
--- a/test/fixtures/tree/list.output.bullet=+.json
+++ /dev/null
@@ -1,423 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "List bullets",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 15,
-              "offset": 14
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 15,
-          "offset": 14
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "One:",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 5,
-                      "offset": 20
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 9,
-                      "offset": 24
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 5,
-                  "offset": 20
-                },
-                "end": {
-                  "line": 3,
-                  "column": 9,
-                  "offset": 24
-                }
-              }
-            },
-            {
-              "type": "list",
-              "ordered": false,
-              "start": null,
-              "spread": false,
-              "children": [
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "Nested one;",
-                          "position": {
-                            "start": {
-                              "line": 4,
-                              "column": 9,
-                              "offset": 33
-                            },
-                            "end": {
-                              "line": 4,
-                              "column": 20,
-                              "offset": 44
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 4,
-                          "column": 9,
-                          "offset": 33
-                        },
-                        "end": {
-                          "line": 4,
-                          "column": 20,
-                          "offset": 44
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 4,
-                      "column": 5,
-                      "offset": 29
-                    },
-                    "end": {
-                      "line": 4,
-                      "column": 20,
-                      "offset": 44
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "Nested two:",
-                          "position": {
-                            "start": {
-                              "line": 5,
-                              "column": 9,
-                              "offset": 53
-                            },
-                            "end": {
-                              "line": 5,
-                              "column": 20,
-                              "offset": 64
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 5,
-                          "column": 9,
-                          "offset": 53
-                        },
-                        "end": {
-                          "line": 5,
-                          "column": 20,
-                          "offset": 64
-                        }
-                      }
-                    },
-                    {
-                      "type": "list",
-                      "ordered": false,
-                      "start": null,
-                      "spread": false,
-                      "children": [
-                        {
-                          "type": "listItem",
-                          "spread": false,
-                          "checked": null,
-                          "children": [
-                            {
-                              "type": "paragraph",
-                              "children": [
-                                {
-                                  "type": "text",
-                                  "value": "Nested three.",
-                                  "position": {
-                                    "start": {
-                                      "line": 6,
-                                      "column": 13,
-                                      "offset": 77
-                                    },
-                                    "end": {
-                                      "line": 6,
-                                      "column": 26,
-                                      "offset": 90
-                                    }
-                                  }
-                                }
-                              ],
-                              "position": {
-                                "start": {
-                                  "line": 6,
-                                  "column": 13,
-                                  "offset": 77
-                                },
-                                "end": {
-                                  "line": 6,
-                                  "column": 26,
-                                  "offset": 90
-                                }
-                              }
-                            }
-                          ],
-                          "position": {
-                            "start": {
-                              "line": 6,
-                              "column": 9,
-                              "offset": 73
-                            },
-                            "end": {
-                              "line": 6,
-                              "column": 26,
-                              "offset": 90
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 6,
-                          "column": 9,
-                          "offset": 73
-                        },
-                        "end": {
-                          "line": 6,
-                          "column": 26,
-                          "offset": 90
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 5,
-                      "column": 5,
-                      "offset": 49
-                    },
-                    "end": {
-                      "line": 6,
-                      "column": 26,
-                      "offset": 90
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 5,
-                  "offset": 29
-                },
-                "end": {
-                  "line": 6,
-                  "column": 26,
-                  "offset": 90
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 16
-            },
-            "end": {
-              "line": 6,
-              "column": 26,
-              "offset": 90
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Two;",
-                  "position": {
-                    "start": {
-                      "line": 7,
-                      "column": 5,
-                      "offset": 95
-                    },
-                    "end": {
-                      "line": 7,
-                      "column": 9,
-                      "offset": 99
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 5,
-                  "offset": 95
-                },
-                "end": {
-                  "line": 7,
-                  "column": 9,
-                  "offset": 99
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 91
-            },
-            "end": {
-              "line": 7,
-              "column": 9,
-              "offset": 99
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Three.",
-                  "position": {
-                    "start": {
-                      "line": 8,
-                      "column": 5,
-                      "offset": 104
-                    },
-                    "end": {
-                      "line": 8,
-                      "column": 11,
-                      "offset": 110
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 8,
-                  "column": 5,
-                  "offset": 104
-                },
-                "end": {
-                  "line": 8,
-                  "column": 11,
-                  "offset": 110
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 100
-            },
-            "end": {
-              "line": 8,
-              "column": 11,
-              "offset": 110
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 16
-        },
-        "end": {
-          "line": 8,
-          "column": 11,
-          "offset": 110
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 9,
-      "column": 1,
-      "offset": 111
-    }
-  }
-}
diff --git a/test/fixtures/tree/list.output.bullet=-.json b/test/fixtures/tree/list.output.bullet=-.json
deleted file mode 100644
index 3747d64e0..000000000
--- a/test/fixtures/tree/list.output.bullet=-.json
+++ /dev/null
@@ -1,423 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "List bullets",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 15,
-              "offset": 14
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 15,
-          "offset": 14
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "One:",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 5,
-                      "offset": 20
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 9,
-                      "offset": 24
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 5,
-                  "offset": 20
-                },
-                "end": {
-                  "line": 3,
-                  "column": 9,
-                  "offset": 24
-                }
-              }
-            },
-            {
-              "type": "list",
-              "ordered": false,
-              "start": null,
-              "spread": false,
-              "children": [
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "Nested one;",
-                          "position": {
-                            "start": {
-                              "line": 4,
-                              "column": 9,
-                              "offset": 33
-                            },
-                            "end": {
-                              "line": 4,
-                              "column": 20,
-                              "offset": 44
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 4,
-                          "column": 9,
-                          "offset": 33
-                        },
-                        "end": {
-                          "line": 4,
-                          "column": 20,
-                          "offset": 44
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 4,
-                      "column": 5,
-                      "offset": 29
-                    },
-                    "end": {
-                      "line": 4,
-                      "column": 20,
-                      "offset": 44
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "Nested two:",
-                          "position": {
-                            "start": {
-                              "line": 5,
-                              "column": 9,
-                              "offset": 53
-                            },
-                            "end": {
-                              "line": 5,
-                              "column": 20,
-                              "offset": 64
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 5,
-                          "column": 9,
-                          "offset": 53
-                        },
-                        "end": {
-                          "line": 5,
-                          "column": 20,
-                          "offset": 64
-                        }
-                      }
-                    },
-                    {
-                      "type": "list",
-                      "ordered": false,
-                      "start": null,
-                      "spread": false,
-                      "children": [
-                        {
-                          "type": "listItem",
-                          "spread": false,
-                          "checked": null,
-                          "children": [
-                            {
-                              "type": "paragraph",
-                              "children": [
-                                {
-                                  "type": "text",
-                                  "value": "Nested three.",
-                                  "position": {
-                                    "start": {
-                                      "line": 6,
-                                      "column": 13,
-                                      "offset": 77
-                                    },
-                                    "end": {
-                                      "line": 6,
-                                      "column": 26,
-                                      "offset": 90
-                                    }
-                                  }
-                                }
-                              ],
-                              "position": {
-                                "start": {
-                                  "line": 6,
-                                  "column": 13,
-                                  "offset": 77
-                                },
-                                "end": {
-                                  "line": 6,
-                                  "column": 26,
-                                  "offset": 90
-                                }
-                              }
-                            }
-                          ],
-                          "position": {
-                            "start": {
-                              "line": 6,
-                              "column": 9,
-                              "offset": 73
-                            },
-                            "end": {
-                              "line": 6,
-                              "column": 26,
-                              "offset": 90
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 6,
-                          "column": 9,
-                          "offset": 73
-                        },
-                        "end": {
-                          "line": 6,
-                          "column": 26,
-                          "offset": 90
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 5,
-                      "column": 5,
-                      "offset": 49
-                    },
-                    "end": {
-                      "line": 6,
-                      "column": 26,
-                      "offset": 90
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 5,
-                  "offset": 29
-                },
-                "end": {
-                  "line": 6,
-                  "column": 26,
-                  "offset": 90
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 16
-            },
-            "end": {
-              "line": 6,
-              "column": 26,
-              "offset": 90
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Two;",
-                  "position": {
-                    "start": {
-                      "line": 7,
-                      "column": 5,
-                      "offset": 95
-                    },
-                    "end": {
-                      "line": 7,
-                      "column": 9,
-                      "offset": 99
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 5,
-                  "offset": 95
-                },
-                "end": {
-                  "line": 7,
-                  "column": 9,
-                  "offset": 99
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 91
-            },
-            "end": {
-              "line": 7,
-              "column": 9,
-              "offset": 99
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Three.",
-                  "position": {
-                    "start": {
-                      "line": 8,
-                      "column": 5,
-                      "offset": 104
-                    },
-                    "end": {
-                      "line": 8,
-                      "column": 11,
-                      "offset": 110
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 8,
-                  "column": 5,
-                  "offset": 104
-                },
-                "end": {
-                  "line": 8,
-                  "column": 11,
-                  "offset": 110
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 100
-            },
-            "end": {
-              "line": 8,
-              "column": 11,
-              "offset": 110
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 16
-        },
-        "end": {
-          "line": 8,
-          "column": 11,
-          "offset": 110
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 9,
-      "column": 1,
-      "offset": 111
-    }
-  }
-}
diff --git a/test/fixtures/tree/list.output.bullet=-asterisk-.json b/test/fixtures/tree/list.output.bullet=-asterisk-.json
deleted file mode 100644
index 3747d64e0..000000000
--- a/test/fixtures/tree/list.output.bullet=-asterisk-.json
+++ /dev/null
@@ -1,423 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "List bullets",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 15,
-              "offset": 14
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 15,
-          "offset": 14
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "One:",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 5,
-                      "offset": 20
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 9,
-                      "offset": 24
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 5,
-                  "offset": 20
-                },
-                "end": {
-                  "line": 3,
-                  "column": 9,
-                  "offset": 24
-                }
-              }
-            },
-            {
-              "type": "list",
-              "ordered": false,
-              "start": null,
-              "spread": false,
-              "children": [
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "Nested one;",
-                          "position": {
-                            "start": {
-                              "line": 4,
-                              "column": 9,
-                              "offset": 33
-                            },
-                            "end": {
-                              "line": 4,
-                              "column": 20,
-                              "offset": 44
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 4,
-                          "column": 9,
-                          "offset": 33
-                        },
-                        "end": {
-                          "line": 4,
-                          "column": 20,
-                          "offset": 44
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 4,
-                      "column": 5,
-                      "offset": 29
-                    },
-                    "end": {
-                      "line": 4,
-                      "column": 20,
-                      "offset": 44
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "Nested two:",
-                          "position": {
-                            "start": {
-                              "line": 5,
-                              "column": 9,
-                              "offset": 53
-                            },
-                            "end": {
-                              "line": 5,
-                              "column": 20,
-                              "offset": 64
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 5,
-                          "column": 9,
-                          "offset": 53
-                        },
-                        "end": {
-                          "line": 5,
-                          "column": 20,
-                          "offset": 64
-                        }
-                      }
-                    },
-                    {
-                      "type": "list",
-                      "ordered": false,
-                      "start": null,
-                      "spread": false,
-                      "children": [
-                        {
-                          "type": "listItem",
-                          "spread": false,
-                          "checked": null,
-                          "children": [
-                            {
-                              "type": "paragraph",
-                              "children": [
-                                {
-                                  "type": "text",
-                                  "value": "Nested three.",
-                                  "position": {
-                                    "start": {
-                                      "line": 6,
-                                      "column": 13,
-                                      "offset": 77
-                                    },
-                                    "end": {
-                                      "line": 6,
-                                      "column": 26,
-                                      "offset": 90
-                                    }
-                                  }
-                                }
-                              ],
-                              "position": {
-                                "start": {
-                                  "line": 6,
-                                  "column": 13,
-                                  "offset": 77
-                                },
-                                "end": {
-                                  "line": 6,
-                                  "column": 26,
-                                  "offset": 90
-                                }
-                              }
-                            }
-                          ],
-                          "position": {
-                            "start": {
-                              "line": 6,
-                              "column": 9,
-                              "offset": 73
-                            },
-                            "end": {
-                              "line": 6,
-                              "column": 26,
-                              "offset": 90
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 6,
-                          "column": 9,
-                          "offset": 73
-                        },
-                        "end": {
-                          "line": 6,
-                          "column": 26,
-                          "offset": 90
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 5,
-                      "column": 5,
-                      "offset": 49
-                    },
-                    "end": {
-                      "line": 6,
-                      "column": 26,
-                      "offset": 90
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 5,
-                  "offset": 29
-                },
-                "end": {
-                  "line": 6,
-                  "column": 26,
-                  "offset": 90
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 16
-            },
-            "end": {
-              "line": 6,
-              "column": 26,
-              "offset": 90
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Two;",
-                  "position": {
-                    "start": {
-                      "line": 7,
-                      "column": 5,
-                      "offset": 95
-                    },
-                    "end": {
-                      "line": 7,
-                      "column": 9,
-                      "offset": 99
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 5,
-                  "offset": 95
-                },
-                "end": {
-                  "line": 7,
-                  "column": 9,
-                  "offset": 99
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 91
-            },
-            "end": {
-              "line": 7,
-              "column": 9,
-              "offset": 99
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Three.",
-                  "position": {
-                    "start": {
-                      "line": 8,
-                      "column": 5,
-                      "offset": 104
-                    },
-                    "end": {
-                      "line": 8,
-                      "column": 11,
-                      "offset": 110
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 8,
-                  "column": 5,
-                  "offset": 104
-                },
-                "end": {
-                  "line": 8,
-                  "column": 11,
-                  "offset": 110
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 100
-            },
-            "end": {
-              "line": 8,
-              "column": 11,
-              "offset": 110
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 16
-        },
-        "end": {
-          "line": 8,
-          "column": 11,
-          "offset": 110
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 9,
-      "column": 1,
-      "offset": 111
-    }
-  }
-}
diff --git a/test/fixtures/tree/lists-with-code-and-rules.json b/test/fixtures/tree/lists-with-code-and-rules.json
deleted file mode 100644
index b35cb40ad..000000000
--- a/test/fixtures/tree/lists-with-code-and-rules.json
+++ /dev/null
@@ -1,814 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "foo",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 4,
-              "offset": 3
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 7,
-          "offset": 6
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "bar:",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 4,
-                      "offset": 11
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 8,
-                      "offset": 15
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 4,
-                  "offset": 11
-                },
-                "end": {
-                  "line": 3,
-                  "column": 8,
-                  "offset": 15
-                }
-              }
-            },
-            {
-              "type": "blockquote",
-              "children": [
-                {
-                  "type": "list",
-                  "ordered": false,
-                  "start": null,
-                  "spread": false,
-                  "children": [
-                    {
-                      "type": "listItem",
-                      "spread": false,
-                      "checked": null,
-                      "children": [
-                        {
-                          "type": "paragraph",
-                          "children": [
-                            {
-                              "type": "text",
-                              "value": "one\n- two\n- three\n- four\n- five",
-                              "position": {
-                                "start": {
-                                  "line": 5,
-                                  "column": 9,
-                                  "offset": 25
-                                },
-                                "end": {
-                                  "line": 9,
-                                  "column": 19,
-                                  "offset": 100
-                                }
-                              }
-                            }
-                          ],
-                          "position": {
-                            "start": {
-                              "line": 5,
-                              "column": 9,
-                              "offset": 25
-                            },
-                            "end": {
-                              "line": 9,
-                              "column": 19,
-                              "offset": 100
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 5,
-                          "column": 7,
-                          "offset": 23
-                        },
-                        "end": {
-                          "line": 9,
-                          "column": 19,
-                          "offset": 100
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 5,
-                      "column": 7,
-                      "offset": 23
-                    },
-                    "end": {
-                      "line": 9,
-                      "column": 19,
-                      "offset": 100
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 5,
-                  "offset": 21
-                },
-                "end": {
-                  "line": 9,
-                  "column": 19,
-                  "offset": 100
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 8
-            },
-            "end": {
-              "line": 9,
-              "column": 19,
-              "offset": 100
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo:",
-                  "position": {
-                    "start": {
-                      "line": 11,
-                      "column": 4,
-                      "offset": 105
-                    },
-                    "end": {
-                      "line": 11,
-                      "column": 8,
-                      "offset": 109
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 11,
-                  "column": 4,
-                  "offset": 105
-                },
-                "end": {
-                  "line": 11,
-                  "column": 8,
-                  "offset": 109
-                }
-              }
-            },
-            {
-              "type": "code",
-              "lang": null,
-              "meta": null,
-              "value": "line 1\nline 2",
-              "position": {
-                "start": {
-                  "line": 13,
-                  "column": 5,
-                  "offset": 115
-                },
-                "end": {
-                  "line": 16,
-                  "column": 8,
-                  "offset": 148
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 102
-            },
-            "end": {
-              "line": 16,
-              "column": 8,
-              "offset": 148
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo:",
-                  "position": {
-                    "start": {
-                      "line": 18,
-                      "column": 4,
-                      "offset": 153
-                    },
-                    "end": {
-                      "line": 18,
-                      "column": 8,
-                      "offset": 157
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 18,
-                  "column": 4,
-                  "offset": 153
-                },
-                "end": {
-                  "line": 18,
-                  "column": 8,
-                  "offset": 157
-                }
-              }
-            },
-            {
-              "type": "list",
-              "ordered": true,
-              "start": 1,
-              "spread": true,
-              "children": [
-                {
-                  "type": "listItem",
-                  "spread": true,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "foo ",
-                          "position": {
-                            "start": {
-                              "line": 20,
-                              "column": 8,
-                              "offset": 166
-                            },
-                            "end": {
-                              "line": 20,
-                              "column": 12,
-                              "offset": 170
-                            }
-                          }
-                        },
-                        {
-                          "type": "inlineCode",
-                          "value": "bar",
-                          "position": {
-                            "start": {
-                              "line": 20,
-                              "column": 12,
-                              "offset": 170
-                            },
-                            "end": {
-                              "line": 20,
-                              "column": 17,
-                              "offset": 175
-                            }
-                          }
-                        },
-                        {
-                          "type": "text",
-                          "value": " bar:",
-                          "position": {
-                            "start": {
-                              "line": 20,
-                              "column": 17,
-                              "offset": 175
-                            },
-                            "end": {
-                              "line": 20,
-                              "column": 22,
-                              "offset": 180
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 20,
-                          "column": 8,
-                          "offset": 166
-                        },
-                        "end": {
-                          "line": 20,
-                          "column": 22,
-                          "offset": 180
-                        }
-                      }
-                    },
-                    {
-                      "type": "code",
-                      "lang": "erb",
-                      "meta": null,
-                      "value": "some code here",
-                      "position": {
-                        "start": {
-                          "line": 22,
-                          "column": 9,
-                          "offset": 190
-                        },
-                        "end": {
-                          "line": 24,
-                          "column": 12,
-                          "offset": 232
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 20,
-                      "column": 5,
-                      "offset": 163
-                    },
-                    "end": {
-                      "line": 24,
-                      "column": 12,
-                      "offset": 232
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": true,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "foo ",
-                          "position": {
-                            "start": {
-                              "line": 26,
-                              "column": 8,
-                              "offset": 241
-                            },
-                            "end": {
-                              "line": 26,
-                              "column": 12,
-                              "offset": 245
-                            }
-                          }
-                        },
-                        {
-                          "type": "inlineCode",
-                          "value": "bar",
-                          "position": {
-                            "start": {
-                              "line": 26,
-                              "column": 12,
-                              "offset": 245
-                            },
-                            "end": {
-                              "line": 26,
-                              "column": 17,
-                              "offset": 250
-                            }
-                          }
-                        },
-                        {
-                          "type": "text",
-                          "value": " bar:",
-                          "position": {
-                            "start": {
-                              "line": 26,
-                              "column": 17,
-                              "offset": 250
-                            },
-                            "end": {
-                              "line": 26,
-                              "column": 22,
-                              "offset": 255
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 26,
-                          "column": 8,
-                          "offset": 241
-                        },
-                        "end": {
-                          "line": 26,
-                          "column": 22,
-                          "offset": 255
-                        }
-                      }
-                    },
-                    {
-                      "type": "code",
-                      "lang": "erb",
-                      "meta": null,
-                      "value": "foo\n---\nbar\n---\nfoo\nbar",
-                      "position": {
-                        "start": {
-                          "line": 28,
-                          "column": 9,
-                          "offset": 265
-                        },
-                        "end": {
-                          "line": 35,
-                          "column": 12,
-                          "offset": 356
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 26,
-                      "column": 5,
-                      "offset": 238
-                    },
-                    "end": {
-                      "line": 35,
-                      "column": 12,
-                      "offset": 356
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": true,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "foo ",
-                          "position": {
-                            "start": {
-                              "line": 37,
-                              "column": 8,
-                              "offset": 365
-                            },
-                            "end": {
-                              "line": 37,
-                              "column": 12,
-                              "offset": 369
-                            }
-                          }
-                        },
-                        {
-                          "type": "inlineCode",
-                          "value": "bar",
-                          "position": {
-                            "start": {
-                              "line": 37,
-                              "column": 12,
-                              "offset": 369
-                            },
-                            "end": {
-                              "line": 37,
-                              "column": 17,
-                              "offset": 374
-                            }
-                          }
-                        },
-                        {
-                          "type": "text",
-                          "value": " bar:",
-                          "position": {
-                            "start": {
-                              "line": 37,
-                              "column": 17,
-                              "offset": 374
-                            },
-                            "end": {
-                              "line": 37,
-                              "column": 22,
-                              "offset": 379
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 37,
-                          "column": 8,
-                          "offset": 365
-                        },
-                        "end": {
-                          "line": 37,
-                          "column": 22,
-                          "offset": 379
-                        }
-                      }
-                    },
-                    {
-                      "type": "code",
-                      "lang": "html",
-                      "meta": null,
-                      "value": "---\nfoo\nfoo\n---\nbar",
-                      "position": {
-                        "start": {
-                          "line": 39,
-                          "column": 9,
-                          "offset": 389
-                        },
-                        "end": {
-                          "line": 45,
-                          "column": 12,
-                          "offset": 469
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 37,
-                      "column": 5,
-                      "offset": 362
-                    },
-                    "end": {
-                      "line": 45,
-                      "column": 12,
-                      "offset": 469
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": true,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "foo ",
-                          "position": {
-                            "start": {
-                              "line": 47,
-                              "column": 8,
-                              "offset": 478
-                            },
-                            "end": {
-                              "line": 47,
-                              "column": 12,
-                              "offset": 482
-                            }
-                          }
-                        },
-                        {
-                          "type": "inlineCode",
-                          "value": "bar",
-                          "position": {
-                            "start": {
-                              "line": 47,
-                              "column": 12,
-                              "offset": 482
-                            },
-                            "end": {
-                              "line": 47,
-                              "column": 17,
-                              "offset": 487
-                            }
-                          }
-                        },
-                        {
-                          "type": "text",
-                          "value": " bar:",
-                          "position": {
-                            "start": {
-                              "line": 47,
-                              "column": 17,
-                              "offset": 487
-                            },
-                            "end": {
-                              "line": 47,
-                              "column": 22,
-                              "offset": 492
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 47,
-                          "column": 8,
-                          "offset": 478
-                        },
-                        "end": {
-                          "line": 47,
-                          "column": 22,
-                          "offset": 492
-                        }
-                      }
-                    },
-                    {
-                      "type": "code",
-                      "lang": null,
-                      "meta": null,
-                      "value": " foo\n ---\n bar",
-                      "position": {
-                        "start": {
-                          "line": 49,
-                          "column": 8,
-                          "offset": 501
-                        },
-                        "end": {
-                          "line": 51,
-                          "column": 16,
-                          "offset": 541
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 47,
-                      "column": 5,
-                      "offset": 475
-                    },
-                    "end": {
-                      "line": 51,
-                      "column": 16,
-                      "offset": 541
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "foo",
-                          "position": {
-                            "start": {
-                              "line": 53,
-                              "column": 8,
-                              "offset": 550
-                            },
-                            "end": {
-                              "line": 53,
-                              "column": 11,
-                              "offset": 553
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 53,
-                          "column": 8,
-                          "offset": 550
-                        },
-                        "end": {
-                          "line": 53,
-                          "column": 11,
-                          "offset": 553
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 53,
-                      "column": 5,
-                      "offset": 547
-                    },
-                    "end": {
-                      "line": 53,
-                      "column": 11,
-                      "offset": 553
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 20,
-                  "column": 5,
-                  "offset": 163
-                },
-                "end": {
-                  "line": 53,
-                  "column": 11,
-                  "offset": 553
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 18,
-              "column": 1,
-              "offset": 150
-            },
-            "end": {
-              "line": 53,
-              "column": 11,
-              "offset": 553
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 8
-        },
-        "end": {
-          "line": 53,
-          "column": 11,
-          "offset": 553
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 54,
-      "column": 1,
-      "offset": 554
-    }
-  }
-}
diff --git a/test/fixtures/tree/literal-email.json b/test/fixtures/tree/literal-email.json
deleted file mode 100644
index d76981764..000000000
--- a/test/fixtures/tree/literal-email.json
+++ /dev/null
@@ -1,314 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "example1 (1234567@example.com)\nexample1 (mailto:1234567@example.com)",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 2,
-              "column": 38,
-              "offset": 68
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 38,
-          "offset": 68
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Lorem foo@bar.baz ipsum.",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 70
-            },
-            "end": {
-              "line": 4,
-              "column": 25,
-              "offset": 94
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 70
-        },
-        "end": {
-          "line": 4,
-          "column": 25,
-          "offset": 94
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "alpha@bravo+charlie.delta isn’t valid, but echo+foxtrot@golf.hotel is.",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 96
-            },
-            "end": {
-              "line": 6,
-              "column": 71,
-              "offset": 166
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 96
-        },
-        "end": {
-          "line": 6,
-          "column": 71,
-          "offset": 166
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Valid: a.b-c_d@a.b",
-          "position": {
-            "start": {
-              "line": 8,
-              "column": 1,
-              "offset": 168
-            },
-            "end": {
-              "line": 8,
-              "column": 19,
-              "offset": 186
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 8,
-          "column": 1,
-          "offset": 168
-        },
-        "end": {
-          "line": 8,
-          "column": 19,
-          "offset": 186
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Valid, but the dot is not part of the email: a.b-c_d@a.b.",
-          "position": {
-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 188
-            },
-            "end": {
-              "line": 10,
-              "column": 58,
-              "offset": 245
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 188
-        },
-        "end": {
-          "line": 10,
-          "column": 58,
-          "offset": 245
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Not valid: a.b-c_d@a.b-",
-          "position": {
-            "start": {
-              "line": 12,
-              "column": 1,
-              "offset": 247
-            },
-            "end": {
-              "line": 12,
-              "column": 24,
-              "offset": 270
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 247
-        },
-        "end": {
-          "line": 12,
-          "column": 24,
-          "offset": 270
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Not valid: a.b-c_d@a.b_",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 1,
-              "offset": 272
-            },
-            "end": {
-              "line": 14,
-              "column": 24,
-              "offset": 295
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 272
-        },
-        "end": {
-          "line": 14,
-          "column": 24,
-          "offset": 295
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Not valid: alpha@bravo.",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 1,
-              "offset": 297
-            },
-            "end": {
-              "line": 16,
-              "column": 24,
-              "offset": 320
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 297
-        },
-        "end": {
-          "line": 16,
-          "column": 24,
-          "offset": 320
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This will make me fail the test because\nmarkdown.js doesnt acknowledge arbitrary html blocks =/",
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 303
-        },
-        "end": {
-          "line": 12,
-          "column": 64,
-          "offset": 413
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "List Item 1",
-                  "position": {
-                    "start": {
-                      "line": 14,
-                      "column": 3,
-                      "offset": 417
-                    },
-                    "end": {
-                      "line": 14,
-                      "column": 14,
-                      "offset": 428
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 14,
-                  "column": 3,
-                  "offset": 417
-                },
-                "end": {
-                  "line": 14,
-                  "column": 14,
-                  "offset": 428
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 1,
-              "offset": 415
-            },
-            "end": {
-              "line": 14,
-              "column": 14,
-              "offset": 428
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "List Item 2",
-                  "position": {
-                    "start": {
-                      "line": 16,
-                      "column": 3,
-                      "offset": 432
-                    },
-                    "end": {
-                      "line": 16,
-                      "column": 14,
-                      "offset": 443
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 16,
-                  "column": 3,
-                  "offset": 432
-                },
-                "end": {
-                  "line": 16,
-                  "column": 14,
-                  "offset": 443
-                }
-              }
-            },
-            {
-              "type": "list",
-              "ordered": false,
-              "start": null,
-              "spread": false,
-              "children": [
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "New List Item 1\nHi, this is a list item.",
-                          "position": {
-                            "start": {
-                              "line": 17,
-                              "column": 5,
-                              "offset": 448
-                            },
-                            "end": {
-                              "line": 18,
-                              "column": 29,
-                              "offset": 492
-                            }
-                          }
-                        }
-                      ],
-                      "position": {
-                        "start": {
-                          "line": 17,
-                          "column": 5,
-                          "offset": 448
-                        },
-                        "end": {
-                          "line": 18,
-                          "column": 29,
-                          "offset": 492
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 17,
-                      "column": 3,
-                      "offset": 446
-                    },
-                    "end": {
-                      "line": 18,
-                      "column": 29,
-                      "offset": 492
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "New List Item 2\nAnother item\nCode goes here.\nLots of it...",
-                          "position": {
-                            "start": {
-                              "line": 19,
-                              "column": 5,
-                              "offset": 497
-                            },
-                            "end": {
-                              "line": 22,
-                              "column": 22,
-                              "offset": 575
-                            }
-                          }
-                        }
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-                      "position": {
-                        "start": {
-                          "line": 19,
-                          "column": 5,
-                          "offset": 497
-                        },
-                        "end": {
-                          "line": 22,
-                          "column": 22,
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-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 19,
-                      "column": 3,
-                      "offset": 495
-                    },
-                    "end": {
-                      "line": 22,
-                      "column": 22,
-                      "offset": 575
-                    }
-                  }
-                },
-                {
-                  "type": "listItem",
-                  "spread": false,
-                  "checked": null,
-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "New List Item 3\nThe last item",
-                          "position": {
-                            "start": {
-                              "line": 23,
-                              "column": 5,
-                              "offset": 580
-                            },
-                            "end": {
-                              "line": 24,
-                              "column": 18,
-                              "offset": 613
-                            }
-                          }
-                        }
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-                      "position": {
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-                          "line": 23,
-                          "column": 5,
-                          "offset": 580
-                        },
-                        "end": {
-                          "line": 24,
-                          "column": 18,
-                          "offset": 613
-                        }
-                      }
-                    }
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-                  "position": {
-                    "start": {
-                      "line": 23,
-                      "column": 3,
-                      "offset": 578
-                    },
-                    "end": {
-                      "line": 24,
-                      "column": 18,
-                      "offset": 613
-                    }
-                  }
-                }
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-              "position": {
-                "start": {
-                  "line": 17,
-                  "column": 3,
-                  "offset": 446
-                },
-                "end": {
-                  "line": 24,
-                  "column": 18,
-                  "offset": 613
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 1,
-              "offset": 430
-            },
-            "end": {
-              "line": 24,
-              "column": 18,
-              "offset": 613
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "List Item 3\nThe final item.",
-                  "position": {
-                    "start": {
-                      "line": 26,
-                      "column": 3,
-                      "offset": 617
-                    },
-                    "end": {
-                      "line": 27,
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-                  "offset": 617
-                },
-                "end": {
-                  "line": 27,
-                  "column": 16,
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-            }
-          ],
-          "position": {
-            "start": {
-              "line": 26,
-              "column": 1,
-              "offset": 615
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-              "line": 27,
-              "column": 16,
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-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "List Item 4\nThe real final item.",
-                  "position": {
-                    "start": {
-                      "line": 29,
-                      "column": 3,
-                      "offset": 648
-                    },
-                    "end": {
-                      "line": 30,
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-              "line": 32,
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-          "line": 32,
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-      "type": "blockquote",
-      "children": [
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-          "type": "list",
-          "ordered": false,
-          "start": null,
-          "spread": false,
-          "children": [
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-                      "column": 5,
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-                      "line": 35,
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-                      "children": [
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-                          "type": "paragraph",
-                          "children": [
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-                              "type": "text",
-                              "value": "New bq Item 1",
-                              "position": {
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-                                  "line": 36,
-                                  "column": 7,
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diff --git a/test/fixtures/tree/markdown-documentation-basics.json b/test/fixtures/tree/markdown-documentation-basics.json
deleted file mode 100644
index ba339e159..000000000
--- a/test/fixtures/tree/markdown-documentation-basics.json
+++ /dev/null
@@ -1,3015 +0,0 @@
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-  "children": [
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-      "depth": 1,
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-              "line": 13,
-              "column": 1,
-              "offset": 511
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This is an \nexample link.
",
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This is an \nexample link.
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I get 10 times more traffic from Google than from Yahoo or MSN.
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-        },
-        {
-          "type": "text",
-          "value": ") will automatically be translated into HTML entities. This makes\nit easy to use Markdown to write about HTML example code:",
-          "position": {
-            "start": {
-              "line": 267,
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-      "type": "code",
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-      "position": {
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-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "
I strongly recommend against using any\n<blink> tags.
\n\n
I wish SmartyPants used named entities like\n&mdash; instead of decimal-encoded\nentites like &#8212;.
",
-      "position": {
-        "start": {
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-          "type": "text",
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-          "type": "text",
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-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "If you want your page to validate under XHTML 1.0 Strict,\nyou've got to put paragraph tags in your blockquotes:\n\n    
\n        
For example.
\n    
",
-      "position": {
-        "start": {
-          "line": 291,
-          "column": 1,
-          "offset": 7610
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-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "
If you want your page to validate under XHTML 1.0 Strict,\nyou've got to put paragraph tags in your blockquotes:
\n\n
<blockquote>\n    <p>For example.</p>\n</blockquote>\n
",
-      "position": {
-        "start": {
-          "line": 300,
-          "column": 1,
-          "offset": 7816
-        },
-        "end": {
-          "line": 306,
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-  "position": {
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-      "offset": 0
-    },
-    "end": {
-      "line": 307,
-      "column": 1,
-      "offset": 8064
-    }
-  }
-}
diff --git a/test/fixtures/tree/markdown-documentation-syntax.json b/test/fixtures/tree/markdown-documentation-syntax.json
deleted file mode 100644
index 16fd05e43..000000000
--- a/test/fixtures/tree/markdown-documentation-syntax.json
+++ /dev/null
@@ -1,11291 +0,0 @@
-{
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-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
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-          "value": "Markdown: Syntax",
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-              "line": 1,
-              "column": 1,
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-          "column": 1,
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-          "offset": 33
-        }
-      }
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-      "type": "html",
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-      "position": {
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-          "column": 1,
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-          "offset": 508
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-      "start": null,
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-      "children": [
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-          "type": "listItem",
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-          "children": [
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-                  "url": "#overview",
-                  "children": [
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-                      "type": "text",
-                      "value": "Overview",
-                      "position": {
-                        "start": {
-                          "line": 13,
-                          "column": 6,
-                          "offset": 516
-                        },
-                        "end": {
-                          "line": 13,
-                          "column": 14,
-                          "offset": 524
-                        }
-                      }
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-                  ],
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-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "link",
-                          "title": null,
-                          "url": "#philosophy",
-                          "children": [
-                            {
-                              "type": "text",
-                              "value": "Philosophy",
-                              "position": {
-                                "start": {
-                                  "line": 14,
-                                  "column": 10,
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-                                },
-                                "end": {
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-                                }
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-                              "offset": 545
-                            },
-                            "end": {
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-                          "line": 14,
-                          "column": 9,
-                          "offset": 545
-                        },
-                        "end": {
-                          "line": 14,
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-                          "offset": 570
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-                          "type": "link",
-                          "title": null,
-                          "url": "#html",
-                          "children": [
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-                              "value": "Inline HTML",
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-                                "start": {
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-      "value": "This is [an example](http://example.com/ \"Title\") inline link.\n\n[This link](http://example.net/) has no title attribute.",
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This is \nan example inline link.
\n\n
This link has no\ntitle attribute.
",
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-      "value": "See my [About](/about/) page for details.",
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-      "value": "This is [an example][id] reference-style link.",
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-      "value": "This is [an example] [id] reference-style link.",
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-          "type": "text",
-          "value": "Then, anywhere in the document, you define your link label like this,\non a line by itself:",
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-      "value": "Visit [Daring Fireball][] for more information.",
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-          "type": "text",
-          "value": "Link definitions can be placed anywhere in your Markdown document. I\ntend to put them immediately after each paragraph in which they're\nused, but if you want, you can put them all at the end of your\ndocument, sort of like footnotes.",
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-      "value": "I get 10 times more traffic from [Google] [1] than from\n[Yahoo] [2] or [MSN] [3].\n\n  [1]: http://google.com/        \"Google\"\n  [2]: http://search.yahoo.com/  \"Yahoo Search\"\n  [3]: http://search.msn.com/    \"MSN Search\"",
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-      "value": "I get 10 times more traffic from [Google][] than from\n[Yahoo][] or [MSN][].\n\n  [google]: http://google.com/        \"Google\"\n  [yahoo]:  http://search.yahoo.com/  \"Yahoo Search\"\n  [msn]:    http://search.msn.com/    \"MSN Search\"",
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I get 10 times more traffic from Google than from\nYahoo\nor MSN.
",
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Use the printf() function.
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-              "children": [
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-                  "type": "text",
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-                  "value": " attribute enclosed in double\nor single quotes.",
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-      "children": [
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-      "type": "code",
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-      "value": "![Alt text][id]",
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-          "line": 813,
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-          "type": "text",
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-          "position": {
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-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "[id]: url/to/image  \"Optional title attribute\"",
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-        "start": {
-          "line": 818,
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-          "offset": 25121
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-      "type": "paragraph",
-      "children": [
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-          "type": "text",
-          "value": "As of this writing, Markdown has no syntax for specifying the\ndimensions of an image; if this is important to you, you can simply\nuse regular HTML ",
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-            },
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-              "line": 822,
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-              "offset": 25327
-            }
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-        },
-        {
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-          "position": {
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-            "end": {
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-        }
-      }
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-      "type": "thematicBreak",
-      "position": {
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-          "column": 1,
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-        "end": {
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-          "offset": 25341
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-    {
-      "type": "html",
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Miscellaneous
",
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-        "start": {
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-          "offset": 25344
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-        "end": {
-          "line": 828,
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-          "offset": 25376
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
Automatic Links
",
-      "position": {
-        "start": {
-          "line": 830,
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-          "offset": 25378
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-        "end": {
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-          "offset": 25416
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-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Markdown supports a shortcut style for creating \"automatic\" links for URLs and email addresses: simply surround the URL or email address with angle brackets. What this means is that if you want to show the actual text of a URL or email address, and also have it be a clickable link, you can do this:",
-          "position": {
-            "start": {
-              "line": 832,
-              "column": 1,
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-            "end": {
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-      "type": "code",
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-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 834,
-          "column": 1,
-          "offset": 25719
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-        "end": {
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-    },
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-      "type": "paragraph",
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-        {
-          "type": "text",
-          "value": "Markdown will turn this into:",
-          "position": {
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-            "end": {
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-          "line": 836,
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-          "offset": 25779
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "http://example.com/",
-      "position": {
-        "start": {
-          "line": 838,
-          "column": 1,
-          "offset": 25781
-        },
-        "end": {
-          "line": 838,
-          "column": 58,
-          "offset": 25838
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Automatic links for email addresses work similarly, except that\nMarkdown will also perform a bit of randomized decimal and hex\nentity-encoding to help obscure your address from address-harvesting\nspambots. For example, Markdown will turn this:",
-          "position": {
-            "start": {
-              "line": 840,
-              "column": 1,
-              "offset": 25840
-            },
-            "end": {
-              "line": 843,
-              "column": 48,
-              "offset": 26083
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-      ],
-      "position": {
-        "start": {
-          "line": 840,
-          "column": 1,
-          "offset": 25840
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-        "end": {
-          "line": 843,
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-          "offset": 26083
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "",
-      "position": {
-        "start": {
-          "line": 845,
-          "column": 1,
-          "offset": 26085
-        },
-        "end": {
-          "line": 845,
-          "column": 26,
-          "offset": 26110
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "into something like this:",
-          "position": {
-            "start": {
-              "line": 847,
-              "column": 1,
-              "offset": 26112
-            },
-            "end": {
-              "line": 847,
-              "column": 26,
-              "offset": 26137
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 847,
-          "column": 1,
-          "offset": 26112
-        },
-        "end": {
-          "line": 847,
-          "column": 26,
-          "offset": 26137
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "address@exa\nmple.com",
-      "position": {
-        "start": {
-          "line": 849,
-          "column": 1,
-          "offset": 26139
-        },
-        "end": {
-          "line": 852,
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-          "offset": 26419
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "which will render in a browser as a clickable link to \"address@example.com\".",
-          "position": {
-            "start": {
-              "line": 854,
-              "column": 1,
-              "offset": 26421
-            },
-            "end": {
-              "line": 854,
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-              "offset": 26497
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-      ],
-      "position": {
-        "start": {
-          "line": 854,
-          "column": 1,
-          "offset": 26421
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-        "end": {
-          "line": 854,
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-          "offset": 26497
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "(This sort of entity-encoding trick will indeed fool many, if not\nmost, address-harvesting bots, but it definitely won't fool all of\nthem. It's better than nothing, but an address published in this way\nwill probably eventually start receiving spam.)",
-          "position": {
-            "start": {
-              "line": 856,
-              "column": 1,
-              "offset": 26499
-            },
-            "end": {
-              "line": 859,
-              "column": 48,
-              "offset": 26748
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 856,
-          "column": 1,
-          "offset": 26499
-        },
-        "end": {
-          "line": 859,
-          "column": 48,
-          "offset": 26748
-        }
-      }
-    },
-    {
-      "type": "html",
-      "value": "
Backslash Escapes
",
-      "position": {
-        "start": {
-          "line": 863,
-          "column": 1,
-          "offset": 26752
-        },
-        "end": {
-          "line": 863,
-          "column": 42,
-          "offset": 26793
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Markdown allows you to use backslash escapes to generate literal\ncharacters which would otherwise have special meaning in Markdown's\nformatting syntax. For example, if you wanted to surround a word with\nliteral asterisks (instead of an HTML ",
-          "position": {
-            "start": {
-              "line": 865,
-              "column": 1,
-              "offset": 26795
-            },
-            "end": {
-              "line": 868,
-              "column": 39,
-              "offset": 27036
-            }
-          }
-        },
-        {
-          "type": "inlineCode",
-          "value": "",
-          "position": {
-            "start": {
-              "line": 868,
-              "column": 39,
-              "offset": 27036
-            },
-            "end": {
-              "line": 868,
-              "column": 45,
-              "offset": 27042
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": " tag), you can backslashes\nbefore the asterisks, like this:",
-          "position": {
-            "start": {
-              "line": 868,
-              "column": 45,
-              "offset": 27042
-            },
-            "end": {
-              "line": 869,
-              "column": 33,
-              "offset": 27101
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 865,
-          "column": 1,
-          "offset": 26795
-        },
-        "end": {
-          "line": 869,
-          "column": 33,
-          "offset": 27101
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "\\*literal asterisks\\*",
-      "position": {
-        "start": {
-          "line": 871,
-          "column": 1,
-          "offset": 27103
-        },
-        "end": {
-          "line": 871,
-          "column": 26,
-          "offset": 27128
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Markdown provides backslash escapes for the following characters:",
-          "position": {
-            "start": {
-              "line": 873,
-              "column": 1,
-              "offset": 27130
-            },
-            "end": {
-              "line": 873,
-              "column": 66,
-              "offset": 27195
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 873,
-          "column": 1,
-          "offset": 27130
-        },
-        "end": {
-          "line": 873,
-          "column": 66,
-          "offset": 27195
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "\\   backslash\n`   backtick\n*   asterisk\n_   underscore\n{}  curly braces\n[]  square brackets\n()  parentheses\n#   hash mark\n+\tplus sign\n-\tminus sign (hyphen)\n.   dot\n!   exclamation mark",
-      "position": {
-        "start": {
-          "line": 875,
-          "column": 1,
-          "offset": 27197
-        },
-        "end": {
-          "line": 886,
-          "column": 25,
-          "offset": 27423
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 888,
-      "column": 1,
-      "offset": 27425
-    }
-  }
-}
diff --git a/test/fixtures/tree/mixed-indentation.json b/test/fixtures/tree/mixed-indentation.json
deleted file mode 100644
index 54f9edbfd..000000000
--- a/test/fixtures/tree/mixed-indentation.json
+++ /dev/null
@@ -1,339 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Mixed spaces and tabs",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 24,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 24,
-          "offset": 23
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Very long\nparagraph",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 3,
-                      "offset": 27
-                    },
-                    "end": {
-                      "line": 4,
-                      "column": 12,
-                      "offset": 48
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 27
-                },
-                "end": {
-                  "line": 4,
-                  "column": 12,
-                  "offset": 48
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 25
-            },
-            "end": {
-              "line": 4,
-              "column": 12,
-              "offset": 48
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 25
-        },
-        "end": {
-          "line": 4,
-          "column": 12,
-          "offset": 48
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Very long\nparagraph",
-                  "position": {
-                    "start": {
-                      "line": 6,
-                      "column": 4,
-                      "offset": 53
-                    },
-                    "end": {
-                      "line": 7,
-                      "column": 12,
-                      "offset": 74
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 6,
-                  "column": 4,
-                  "offset": 53
-                },
-                "end": {
-                  "line": 7,
-                  "column": 12,
-                  "offset": 74
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 50
-            },
-            "end": {
-              "line": 7,
-              "column": 12,
-              "offset": 74
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 50
-        },
-        "end": {
-          "line": 7,
-          "column": 12,
-          "offset": 74
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Very long\nparagraph",
-                  "position": {
-                    "start": {
-                      "line": 9,
-                      "column": 3,
-                      "offset": 78
-                    },
-                    "end": {
-                      "line": 10,
-                      "column": 12,
-                      "offset": 99
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 9,
-                  "column": 3,
-                  "offset": 78
-                },
-                "end": {
-                  "line": 10,
-                  "column": 12,
-                  "offset": 99
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 9,
-              "column": 1,
-              "offset": 76
-            },
-            "end": {
-              "line": 10,
-              "column": 12,
-              "offset": 99
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 76
-        },
-        "end": {
-          "line": 10,
-          "column": 12,
-          "offset": 99
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Very long\nparagraph",
-                  "position": {
-                    "start": {
-                      "line": 12,
-                      "column": 4,
-                      "offset": 104
-                    },
-                    "end": {
-                      "line": 13,
-                      "column": 12,
-                      "offset": 125
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 12,
-                  "column": 4,
-                  "offset": 104
-                },
-                "end": {
-                  "line": 13,
-                  "column": 12,
-                  "offset": 125
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 12,
-              "column": 1,
-              "offset": 101
-            },
-            "end": {
-              "line": 13,
-              "column": 12,
-              "offset": 125
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 12,
-          "column": 1,
-          "offset": 101
-        },
-        "end": {
-          "line": 13,
-          "column": 12,
-          "offset": 125
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 14,
-      "column": 1,
-      "offset": 126
-    }
-  }
-}
diff --git a/test/fixtures/tree/nested-blockquotes.json b/test/fixtures/tree/nested-blockquotes.json
deleted file mode 100644
index 67a82b743..000000000
--- a/test/fixtures/tree/nested-blockquotes.json
+++ /dev/null
@@ -1,150 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "foo",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 6,
-                  "offset": 5
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 6,
-              "offset": 5
-            }
-          }
-        },
-        {
-          "type": "blockquote",
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "bar",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 5,
-                      "offset": 12
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 8,
-                      "offset": 15
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 5,
-                  "offset": 12
-                },
-                "end": {
-                  "line": 3,
-                  "column": 8,
-                  "offset": 15
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 3,
-              "offset": 10
-            },
-            "end": {
-              "line": 3,
-              "column": 8,
-              "offset": 15
-            }
-          }
-        },
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "foo",
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 3,
-                  "offset": 20
-                },
-                "end": {
-                  "line": 5,
-                  "column": 6,
-                  "offset": 23
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 3,
-              "offset": 20
-            },
-            "end": {
-              "line": 5,
-              "column": 6,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 5,
-          "column": 6,
-          "offset": 23
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 24
-    }
-  }
-}
diff --git a/test/fixtures/tree/nested-code.json b/test/fixtures/tree/nested-code.json
deleted file mode 100644
index 7859e770d..000000000
--- a/test/fixtures/tree/nested-code.json
+++ /dev/null
@@ -1,83 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "inlineCode",
-          "value": "hi ther `` ok ```",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 30,
-              "offset": 29
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 30,
-          "offset": 29
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "inlineCode",
-          "value": "`hi ther`",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 31
-            },
-            "end": {
-              "line": 3,
-              "column": 16,
-              "offset": 46
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 31
-        },
-        "end": {
-          "line": 3,
-          "column": 16,
-          "offset": 46
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 47
-    }
-  }
-}
diff --git a/test/fixtures/tree/nested-em.nooutput.json b/test/fixtures/tree/nested-em.nooutput.json
deleted file mode 100644
index 4de07ce48..000000000
--- a/test/fixtures/tree/nested-em.nooutput.json
+++ /dev/null
@@ -1,215 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "test ",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            },
-            {
-              "type": "strong",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "test",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 9,
-                      "offset": 8
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 13,
-                      "offset": 12
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                },
-                "end": {
-                  "line": 1,
-                  "column": 15,
-                  "offset": 14
-                }
-              }
-            },
-            {
-              "type": "text",
-              "value": " test",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 15,
-                  "offset": 14
-                },
-                "end": {
-                  "line": 1,
-                  "column": 20,
-                  "offset": 19
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 21,
-              "offset": 20
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 21,
-          "offset": 20
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "test ",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 23
-                },
-                "end": {
-                  "line": 3,
-                  "column": 7,
-                  "offset": 28
-                }
-              }
-            },
-            {
-              "type": "strong",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "test",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 9,
-                      "offset": 30
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 13,
-                      "offset": 34
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 7,
-                  "offset": 28
-                },
-                "end": {
-                  "line": 3,
-                  "column": 15,
-                  "offset": 36
-                }
-              }
-            },
-            {
-              "type": "text",
-              "value": " test",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 15,
-                  "offset": 36
-                },
-                "end": {
-                  "line": 3,
-                  "column": 20,
-                  "offset": 41
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 22
-            },
-            "end": {
-              "line": 3,
-              "column": 21,
-              "offset": 42
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 22
-        },
-        "end": {
-          "line": 3,
-          "column": 21,
-          "offset": 42
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 43
-    }
-  }
-}
diff --git a/test/fixtures/tree/nested-references.json b/test/fixtures/tree/nested-references.json
deleted file mode 100644
index d607078c6..000000000
--- a/test/fixtures/tree/nested-references.json
+++ /dev/null
@@ -1,298 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This nested image should work:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 31,
-              "offset": 30
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 31,
-          "offset": 30
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "imageReference",
-              "alt": "Foo",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 2,
-                  "offset": 33
-                },
-                "end": {
-                  "line": 3,
-                  "column": 13,
-                  "offset": 44
-                }
-              },
-              "label": "bar",
-              "identifier": "bar",
-              "referenceType": "full"
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 32
-            },
-            "end": {
-              "line": 3,
-              "column": 19,
-              "offset": 50
-            }
-          },
-          "label": "baz",
-          "identifier": "baz",
-          "referenceType": "full"
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 32
-        },
-        "end": {
-          "line": 3,
-          "column": 19,
-          "offset": 50
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This nested link should not work:",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 52
-            },
-            "end": {
-              "line": 5,
-              "column": 34,
-              "offset": 85
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 52
-        },
-        "end": {
-          "line": 5,
-          "column": 34,
-          "offset": 85
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 87
-            },
-            "end": {
-              "line": 7,
-              "column": 2,
-              "offset": 88
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "Foo",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 3,
-                  "offset": 89
-                },
-                "end": {
-                  "line": 7,
-                  "column": 6,
-                  "offset": 92
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 2,
-              "offset": 88
-            },
-            "end": {
-              "line": 7,
-              "column": 12,
-              "offset": 98
-            }
-          },
-          "label": "bar",
-          "identifier": "bar",
-          "referenceType": "full"
-        },
-        {
-          "type": "text",
-          "value": "]",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 12,
-              "offset": 98
-            },
-            "end": {
-              "line": 7,
-              "column": 13,
-              "offset": 99
-            }
-          }
-        },
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "baz",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 14,
-                  "offset": 100
-                },
-                "end": {
-                  "line": 7,
-                  "column": 17,
-                  "offset": 103
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 13,
-              "offset": 99
-            },
-            "end": {
-              "line": 7,
-              "column": 18,
-              "offset": 104
-            }
-          },
-          "label": "baz",
-          "identifier": "baz",
-          "referenceType": "shortcut"
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 87
-        },
-        "end": {
-          "line": 7,
-          "column": 18,
-          "offset": 104
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "bar",
-      "label": "bar",
-      "title": "bar",
-      "url": "https://bar.com",
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 106
-        },
-        "end": {
-          "line": 9,
-          "column": 29,
-          "offset": 134
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "baz",
-      "label": "baz",
-      "title": "baz",
-      "url": "https://baz.com",
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 135
-        },
-        "end": {
-          "line": 10,
-          "column": 29,
-          "offset": 163
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 11,
-      "column": 1,
-      "offset": 164
-    }
-  }
-}
diff --git a/test/fixtures/tree/nested-square-link.json b/test/fixtures/tree/nested-square-link.json
deleted file mode 100644
index 667a35304..000000000
--- a/test/fixtures/tree/nested-square-link.json
+++ /dev/null
@@ -1,337 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "/url",
-          "children": [
-            {
-              "type": "text",
-              "value": "the ",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 6,
-                  "offset": 5
-                }
-              }
-            },
-            {
-              "type": "inlineCode",
-              "value": "]",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 6,
-                  "offset": 5
-                },
-                "end": {
-                  "line": 1,
-                  "column": 9,
-                  "offset": 8
-                }
-              }
-            },
-            {
-              "type": "text",
-              "value": " character",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 9,
-                  "offset": 8
-                },
-                "end": {
-                  "line": 1,
-                  "column": 19,
-                  "offset": 18
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 26,
-              "offset": 25
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 26,
-          "offset": 25
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "link",
-          "title": null,
-          "url": "/url",
-          "children": [
-            {
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-}
diff --git a/test/fixtures/tree/not-a-link.json b/test/fixtures/tree/not-a-link.json
deleted file mode 100644
index 3cbaeeee3..000000000
--- a/test/fixtures/tree/not-a-link.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[test](not a link)",
-          "position": {
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-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
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-    "end": {
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-      "column": 1,
-      "offset": 20
-    }
-  }
-}
diff --git a/test/fixtures/tree/ordered-and-unordered-lists.json b/test/fixtures/tree/ordered-and-unordered-lists.json
deleted file mode 100644
index e3eb9aea9..000000000
--- a/test/fixtures/tree/ordered-and-unordered-lists.json
+++ /dev/null
@@ -1,3677 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "Unordered",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 4,
-              "offset": 3
-            },
-            "end": {
-              "line": 1,
-              "column": 13,
-              "offset": 12
-            }
-          }
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-      ],
-      "position": {
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-          "column": 1,
-          "offset": 0
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-        "end": {
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-        }
-      }
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-      "children": [
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-          "type": "text",
-          "value": "Asterisks tight:",
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-          "offset": 30
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-      "start": null,
-      "spread": false,
-      "children": [
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-                  "value": "asterisk 1",
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-                  "value": "Third",
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-      "children": [
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-          "children": [
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-              "children": [
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-                  "children": [
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-                          "type": "text",
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-                          "type": "text",
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-                      "type": "paragraph",
-                      "children": [
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-                          "type": "text",
-                          "value": "Foe",
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-              "type": "paragraph",
-              "children": [
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-                  "type": "text",
-                  "value": "Third",
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-                    "start": {
-                      "line": 122,
-                      "column": 4,
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-                      "line": 122,
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-      "type": "list",
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-          "spread": true,
-          "checked": null,
-          "children": [
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-              "type": "paragraph",
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-                  "spread": false,
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-                  "children": [
-                    {
-                      "type": "paragraph",
-                      "children": [
-                        {
-                          "type": "text",
-                          "value": "sub",
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-                              "line": 129,
-                              "column": 4,
-                              "offset": 892
-                            },
-                            "end": {
-                              "line": 129,
-                              "column": 7,
-                              "offset": 895
-                            }
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-                      ],
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-                        },
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-                        }
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-                    },
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-                },
-                "end": {
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-                }
-              }
-            },
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "that",
-                  "position": {
-                    "start": {
-                      "line": 131,
-                      "column": 2,
-                      "offset": 898
-                    },
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-                      "line": 131,
-                      "column": 6,
-                      "offset": 902
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-            },
-            "end": {
-              "line": 131,
-              "column": 6,
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-            }
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-      ],
-      "position": {
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-          "offset": 881
-        },
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-          "offset": 902
-        }
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-      "offset": 903
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-  }
-}
diff --git a/test/fixtures/tree/ordered-different-types.nooutput.json b/test/fixtures/tree/ordered-different-types.nooutput.json
deleted file mode 100644
index 7ae58608b..000000000
--- a/test/fixtures/tree/ordered-different-types.nooutput.json
+++ /dev/null
@@ -1,213 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "foo",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 4,
-                      "offset": 3
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 7,
-                      "offset": 6
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "bar",
-                  "position": {
-                    "start": {
-                      "line": 2,
-                      "column": 4,
-                      "offset": 10
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 7,
-                      "offset": 13
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 2,
-                  "column": 4,
-                  "offset": 10
-                },
-                "end": {
-                  "line": 2,
-                  "column": 7,
-                  "offset": 13
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 7
-            },
-            "end": {
-              "line": 2,
-              "column": 7,
-              "offset": 13
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 2,
-          "column": 7,
-          "offset": 13
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 3,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "baz",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 4,
-                      "offset": 17
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 7,
-                      "offset": 20
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 4,
-                  "offset": 17
-                },
-                "end": {
-                  "line": 3,
-                  "column": 7,
-                  "offset": 20
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 14
-            },
-            "end": {
-              "line": 3,
-              "column": 7,
-              "offset": 20
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 14
-        },
-        "end": {
-          "line": 3,
-          "column": 7,
-          "offset": 20
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 21
-    }
-  }
-}
diff --git a/test/fixtures/tree/ordered-with-parentheses.json b/test/fixtures/tree/ordered-with-parentheses.json
deleted file mode 100644
index 5293b8b5a..000000000
--- a/test/fixtures/tree/ordered-with-parentheses.json
+++ /dev/null
@@ -1,1129 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "Ordered",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 4,
-              "offset": 3
-            },
-            "end": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 11,
-          "offset": 10
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Tight:",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 12
-            },
-            "end": {
-              "line": 3,
-              "column": 7,
-              "offset": 18
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 12
-        },
-        "end": {
-          "line": 3,
-          "column": 7,
-          "offset": 18
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
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-                  "value": "Third",
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-            "start": {
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-              "offset": 39
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-              "column": 9,
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-            "end": {
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-              "children": [
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-            "end": {
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-              "offset": 61
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-          "children": [
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-                      "column": 4,
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-              "position": {
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-                  "line": 12,
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-                }
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-              "line": 12,
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-          "type": "listItem",
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-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
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-                  "position": {
-                    "start": {
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-                      "column": 4,
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-                    "end": {
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-              "position": {
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-          "position": {
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-            "end": {
-              "line": 13,
-              "column": 9,
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-      "position": {
-        "start": {
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-      "type": "paragraph",
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-        {
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-            "start": {
-              "line": 15,
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-            "end": {
-              "line": 15,
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-              "offset": 96
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-      "position": {
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-        "end": {
-          "line": 15,
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-          "offset": 96
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-              "type": "paragraph",
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-          "position": {
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-            },
-            "end": {
-              "line": 17,
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-              "offset": 106
-            }
-          }
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-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
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-                {
-                  "type": "text",
-                  "value": "Second",
-                  "position": {
-                    "start": {
-                      "line": 19,
-                      "column": 4,
-                      "offset": 111
-                    },
-                    "end": {
-                      "line": 19,
-                      "column": 10,
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-                    }
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-              ],
-              "position": {
-                "start": {
-                  "line": 19,
-                  "column": 4,
-                  "offset": 111
-                },
-                "end": {
-                  "line": 19,
-                  "column": 10,
-                  "offset": 117
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 19,
-              "column": 1,
-              "offset": 108
-            },
-            "end": {
-              "line": 19,
-              "column": 10,
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-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Third",
-                  "position": {
-                    "start": {
-                      "line": 21,
-                      "column": 4,
-                      "offset": 122
-                    },
-                    "end": {
-                      "line": 21,
-                      "column": 9,
-                      "offset": 127
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 21,
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-                  "offset": 122
-                },
-                "end": {
-                  "line": 21,
-                  "column": 9,
-                  "offset": 127
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 21,
-              "column": 1,
-              "offset": 119
-            },
-            "end": {
-              "line": 21,
-              "column": 9,
-              "offset": 127
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 98
-        },
-        "end": {
-          "line": 21,
-          "column": 9,
-          "offset": 127
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "and using spaces:",
-          "position": {
-            "start": {
-              "line": 23,
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-            },
-            "end": {
-              "line": 23,
-              "column": 18,
-              "offset": 146
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
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-          "column": 1,
-          "offset": 129
-        },
-        "end": {
-          "line": 23,
-          "column": 18,
-          "offset": 146
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
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-          "checked": null,
-          "children": [
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-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "One",
-                  "position": {
-                    "start": {
-                      "line": 25,
-                      "column": 4,
-                      "offset": 151
-                    },
-                    "end": {
-                      "line": 25,
-                      "column": 7,
-                      "offset": 154
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 25,
-                  "column": 4,
-                  "offset": 151
-                },
-                "end": {
-                  "line": 25,
-                  "column": 7,
-                  "offset": 154
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 25,
-              "column": 1,
-              "offset": 148
-            },
-            "end": {
-              "line": 25,
-              "column": 7,
-              "offset": 154
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Two",
-                  "position": {
-                    "start": {
-                      "line": 27,
-                      "column": 4,
-                      "offset": 159
-                    },
-                    "end": {
-                      "line": 27,
-                      "column": 7,
-                      "offset": 162
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 27,
-                  "column": 4,
-                  "offset": 159
-                },
-                "end": {
-                  "line": 27,
-                  "column": 7,
-                  "offset": 162
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 27,
-              "column": 1,
-              "offset": 156
-            },
-            "end": {
-              "line": 27,
-              "column": 7,
-              "offset": 162
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Three",
-                  "position": {
-                    "start": {
-                      "line": 29,
-                      "column": 4,
-                      "offset": 167
-                    },
-                    "end": {
-                      "line": 29,
-                      "column": 9,
-                      "offset": 172
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 29,
-                  "column": 4,
-                  "offset": 167
-                },
-                "end": {
-                  "line": 29,
-                  "column": 9,
-                  "offset": 172
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 29,
-              "column": 1,
-              "offset": 164
-            },
-            "end": {
-              "line": 29,
-              "column": 9,
-              "offset": 172
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 25,
-          "column": 1,
-          "offset": 148
-        },
-        "end": {
-          "line": 29,
-          "column": 9,
-          "offset": 172
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Multiple paragraphs:",
-          "position": {
-            "start": {
-              "line": 31,
-              "column": 1,
-              "offset": 174
-            },
-            "end": {
-              "line": 31,
-              "column": 21,
-              "offset": 194
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 31,
-          "column": 1,
-          "offset": 174
-        },
-        "end": {
-          "line": 31,
-          "column": 21,
-          "offset": 194
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Item 1, graf one.",
-                  "position": {
-                    "start": {
-                      "line": 33,
-                      "column": 4,
-                      "offset": 199
-                    },
-                    "end": {
-                      "line": 33,
-                      "column": 21,
-                      "offset": 216
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 33,
-                  "column": 4,
-                  "offset": 199
-                },
-                "end": {
-                  "line": 33,
-                  "column": 21,
-                  "offset": 216
-                }
-              }
-            },
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Item 2. graf two. The quick brown fox jumped over the lazy dog's\nback.",
-                  "position": {
-                    "start": {
-                      "line": 35,
-                      "column": 2,
-                      "offset": 219
-                    },
-                    "end": {
-                      "line": 36,
-                      "column": 7,
-                      "offset": 290
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 35,
-                  "column": 2,
-                  "offset": 219
-                },
-                "end": {
-                  "line": 36,
-                  "column": 7,
-                  "offset": 290
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 33,
-              "column": 1,
-              "offset": 196
-            },
-            "end": {
-              "line": 36,
-              "column": 7,
-              "offset": 290
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Item 2.",
-                  "position": {
-                    "start": {
-                      "line": 38,
-                      "column": 4,
-                      "offset": 296
-                    },
-                    "end": {
-                      "line": 38,
-                      "column": 11,
-                      "offset": 303
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 38,
-                  "column": 4,
-                  "offset": 296
-                },
-                "end": {
-                  "line": 38,
-                  "column": 11,
-                  "offset": 303
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 38,
-              "column": 1,
-              "offset": 293
-            },
-            "end": {
-              "line": 38,
-              "column": 11,
-              "offset": 303
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "Item 3.",
-                  "position": {
-                    "start": {
-                      "line": 40,
-                      "column": 4,
-                      "offset": 308
-                    },
-                    "end": {
-                      "line": 40,
-                      "column": 11,
-                      "offset": 315
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 40,
-                  "column": 4,
-                  "offset": 308
-                },
-                "end": {
-                  "line": 40,
-                  "column": 11,
-                  "offset": 315
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 40,
-              "column": 1,
-              "offset": 305
-            },
-            "end": {
-              "line": 40,
-              "column": 11,
-              "offset": 315
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 33,
-          "column": 1,
-          "offset": 196
-        },
-        "end": {
-          "line": 40,
-          "column": 11,
-          "offset": 315
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 41,
-      "column": 1,
-      "offset": 316
-    }
-  }
-}
diff --git a/test/fixtures/tree/paragraphs-and-indentation.json b/test/fixtures/tree/paragraphs-and-indentation.json
deleted file mode 100644
index 9a650a533..000000000
--- a/test/fixtures/tree/paragraphs-and-indentation.json
+++ /dev/null
@@ -1,514 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Without lines.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
-              "column": 17,
-              "offset": 16
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 17,
-          "offset": 16
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a paragraph\nand this is further text",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 18
-            },
-            "end": {
-              "line": 4,
-              "column": 29,
-              "offset": 66
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-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 18
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-        "end": {
-          "line": 4,
-          "column": 29,
-          "offset": 66
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a paragraph\nand this is further text",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 1,
-              "offset": 68
-            },
-            "end": {
-              "line": 7,
-              "column": 28,
-              "offset": 115
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-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
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-        "end": {
-          "line": 7,
-          "column": 28,
-          "offset": 115
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a paragraph",
-          "position": {
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-              "line": 9,
-              "column": 1,
-              "offset": 117
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-            "end": {
-              "line": 9,
-              "column": 20,
-              "offset": 136
-            }
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-      ],
-      "position": {
-        "start": {
-          "line": 9,
-          "column": 1,
-          "offset": 117
-        },
-        "end": {
-          "line": 9,
-          "column": 20,
-          "offset": 136
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "and this is a new paragraph",
-          "position": {
-            "start": {
-              "line": 11,
-              "column": 1,
-              "offset": 142
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-            "end": {
-              "line": 11,
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-      ],
-      "position": {
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-        "end": {
-          "line": 11,
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-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a paragraph with some asterisks\n***",
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-            "start": {
-              "line": 13,
-              "column": 1,
-              "offset": 171
-            },
-            "end": {
-              "line": 14,
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-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a paragraph followed by a horizontal rule",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 1,
-              "offset": 220
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-            "end": {
-              "line": 16,
-              "column": 50,
-              "offset": 269
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-      ],
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 220
-        },
-        "end": {
-          "line": 16,
-          "column": 50,
-          "offset": 269
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 4,
-          "offset": 273
-        },
-        "end": {
-          "line": 17,
-          "column": 7,
-          "offset": 276
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "With lines.",
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-              "line": 19,
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-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
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-          "type": "text",
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-    },
-    {
-      "type": "code",
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-      "meta": null,
-      "value": "and this is code",
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-          "line": 23,
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-          "line": 23,
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-        }
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-    {
-      "type": "paragraph",
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-          "type": "text",
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-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "and this is a new paragraph",
-          "position": {
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-              "line": 27,
-              "column": 4,
-              "offset": 360
-            },
-            "end": {
-              "line": 27,
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-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "This is a paragraph with some asterisks in a code block",
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-              "line": 29,
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-            },
-            "end": {
-              "line": 29,
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-        }
-      }
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-      "type": "code",
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-          "line": 31,
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-        },
-        "end": {
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-        }
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-      "type": "paragraph",
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-      "type": "thematicBreak",
-      "position": {
-        "start": {
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-    "end": {
-      "line": 37,
-      "column": 1,
-      "offset": 514
-    }
-  }
-}
diff --git a/test/fixtures/tree/paragraphs-empty.json b/test/fixtures/tree/paragraphs-empty.json
deleted file mode 100644
index 65a953cd5..000000000
--- a/test/fixtures/tree/paragraphs-empty.json
+++ /dev/null
@@ -1,150 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "aaa",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 4
-            },
-            "end": {
-              "line": 3,
-              "column": 4,
-              "offset": 7
-            }
-          }
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-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 4
-        },
-        "end": {
-          "line": 3,
-          "column": 4,
-          "offset": 7
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "aaa",
-          "position": {
-            "start": {
-              "line": 6,
-              "column": 3,
-              "offset": 14
-            },
-            "end": {
-              "line": 6,
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-              "offset": 17
-            }
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-        }
-      }
-    },
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-      "type": "paragraph",
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-        }
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-    },
-    {
-      "type": "paragraph",
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-          "type": "text",
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-              "column": 1,
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-            },
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-            }
-          }
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-        },
-        "end": {
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-          "offset": 33
-        }
-      }
-    }
-  ],
-  "position": {
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-      "line": 12,
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-    }
-  }
-}
diff --git a/test/fixtures/tree/ref-paren.json b/test/fixtures/tree/ref-paren.json
deleted file mode 100644
index 0c22e5fe0..000000000
--- a/test/fixtures/tree/ref-paren.json
+++ /dev/null
@@ -1,89 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "hi",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 5,
-              "offset": 4
-            }
-          },
-          "label": "hi",
-          "identifier": "hi",
-          "referenceType": "shortcut"
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 5,
-          "offset": 4
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "hi",
-      "label": "hi",
-      "title": "there",
-      "url": "/url",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 6
-        },
-        "end": {
-          "line": 3,
-          "column": 19,
-          "offset": 24
-        }
-      }
-    }
-  ],
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-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 25
-    }
-  }
-}
diff --git a/test/fixtures/tree/reference-image-empty-alt.json b/test/fixtures/tree/reference-image-empty-alt.json
deleted file mode 100644
index 59f94e4e9..000000000
--- a/test/fixtures/tree/reference-image-empty-alt.json
+++ /dev/null
@@ -1,72 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "imageReference",
-          "alt": "",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          },
-          "label": "1",
-          "identifier": "1",
-          "referenceType": "full"
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 7,
-          "offset": 6
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "1",
-      "label": "1",
-      "title": null,
-      "url": "/xyz.png",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 8
-        },
-        "end": {
-          "line": 3,
-          "column": 14,
-          "offset": 21
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 22
-    }
-  }
-}
diff --git a/test/fixtures/tree/reference-link-escape.nooutput.json b/test/fixtures/tree/reference-link-escape.nooutput.json
deleted file mode 100644
index 256eb83e0..000000000
--- a/test/fixtures/tree/reference-link-escape.nooutput.json
+++ /dev/null
@@ -1,331 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "a",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            }
-          },
-          "label": "b*r*",
-          "identifier": "b\\*r*",
-          "referenceType": "full"
-        },
-        {
-          "type": "text",
-          "value": ", ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            },
-            "end": {
-              "line": 1,
-              "column": 13,
-              "offset": 12
-            }
-          }
-        },
-        {
-          "type": "linkReference",
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-            {
-              "type": "text",
-              "value": "b*r*",
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-                  "line": 1,
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-                },
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-                  "offset": 18
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-              "line": 1,
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-              "offset": 21
-            }
-          },
-          "label": "b*r*",
-          "identifier": "b\\*r*",
-          "referenceType": "collapsed"
-        },
-        {
-          "type": "text",
-          "value": ", ",
-          "position": {
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-              "line": 1,
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-              "offset": 23
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-          }
-        },
-        {
-          "type": "linkReference",
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-              "type": "text",
-              "value": "b*r*",
-              "position": {
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-              "offset": 30
-            }
-          },
-          "label": "b*r*",
-          "identifier": "b\\*r*",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ".",
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-            "end": {
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-        }
-      }
-    },
-    {
-      "type": "paragraph",
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-          "type": "imageReference",
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-          },
-          "label": "b*r*",
-          "identifier": "b\\*r*",
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-        {
-          "type": "text",
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-            "end": {
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-        },
-        {
-          "type": "imageReference",
-          "alt": "b*r*",
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-              "column": 16,
-              "offset": 48
-            },
-            "end": {
-              "line": 3,
-              "column": 26,
-              "offset": 58
-            }
-          },
-          "label": "b*r*",
-          "identifier": "b\\*r*",
-          "referenceType": "collapsed"
-        },
-        {
-          "type": "text",
-          "value": ", ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 26,
-              "offset": 58
-            },
-            "end": {
-              "line": 3,
-              "column": 28,
-              "offset": 60
-            }
-          }
-        },
-        {
-          "type": "imageReference",
-          "alt": "b*r*",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 28,
-              "offset": 60
-            },
-            "end": {
-              "line": 3,
-              "column": 36,
-              "offset": 68
-            }
-          },
-          "label": "b*r*",
-          "identifier": "b\\*r*",
-          "referenceType": "shortcut"
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 36,
-              "offset": 68
-            },
-            "end": {
-              "line": 3,
-              "column": 37,
-              "offset": 69
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 33
-        },
-        "end": {
-          "line": 3,
-          "column": 37,
-          "offset": 69
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "b\\*r*",
-      "label": "b*r*",
-      "title": null,
-      "url": "http://google.com",
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 71
-        },
-        "end": {
-          "line": 5,
-          "column": 27,
-          "offset": 97
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 98
-    }
-  }
-}
diff --git a/test/fixtures/tree/reference-link-not-closed.json b/test/fixtures/tree/reference-link-not-closed.json
deleted file mode 100644
index e1e3392a0..000000000
--- a/test/fixtures/tree/reference-link-not-closed.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[bar][bar",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 10,
-              "offset": 9
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 10,
-          "offset": 9
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[bar][",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 11
-            },
-            "end": {
-              "line": 3,
-              "column": 7,
-              "offset": 17
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 11
-        },
-        "end": {
-          "line": 3,
-          "column": 7,
-          "offset": 17
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "[bar]",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 19
-            },
-            "end": {
-              "line": 5,
-              "column": 6,
-              "offset": 24
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 19
-        },
-        "end": {
-          "line": 5,
-          "column": 6,
-          "offset": 24
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 6,
-      "column": 1,
-      "offset": 25
-    }
-  }
-}
diff --git a/test/fixtures/tree/reference-link-with-angle-brackets.json b/test/fixtures/tree/reference-link-with-angle-brackets.json
deleted file mode 100644
index bf24bb9ac..000000000
--- a/test/fixtures/tree/reference-link-with-angle-brackets.json
+++ /dev/null
@@ -1,89 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "foo",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 6,
-              "offset": 5
-            }
-          },
-          "label": "foo",
-          "identifier": "foo",
-          "referenceType": "shortcut"
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 6,
-          "offset": 5
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "foo",
-      "label": "foo",
-      "title": null,
-      "url": "./url with spaces",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 7
-        },
-        "end": {
-          "line": 3,
-          "column": 27,
-          "offset": 33
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 34
-    }
-  }
-}
diff --git a/test/fixtures/tree/reference-link-with-multiple-definitions.json b/test/fixtures/tree/reference-link-with-multiple-definitions.json
deleted file mode 100644
index 2f6a34743..000000000
--- a/test/fixtures/tree/reference-link-with-multiple-definitions.json
+++ /dev/null
@@ -1,108 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "linkReference",
-          "children": [
-            {
-              "type": "text",
-              "value": "foo",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 2,
-                  "offset": 1
-                },
-                "end": {
-                  "line": 1,
-                  "column": 5,
-                  "offset": 4
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 6,
-              "offset": 5
-            }
-          },
-          "label": "foo",
-          "identifier": "foo",
-          "referenceType": "shortcut"
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 6,
-          "offset": 5
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "foo",
-      "label": "foo",
-      "title": null,
-      "url": "first",
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 7
-        },
-        "end": {
-          "line": 3,
-          "column": 13,
-          "offset": 19
-        }
-      }
-    },
-    {
-      "type": "definition",
-      "identifier": "foo",
-      "label": "foo",
-      "title": null,
-      "url": "second",
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 20
-        },
-        "end": {
-          "line": 4,
-          "column": 14,
-          "offset": 33
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 5,
-      "column": 1,
-      "offset": 34
-    }
-  }
-}
diff --git a/test/fixtures/tree/remarkjs-remark-lint-gh-111.json b/test/fixtures/tree/remarkjs-remark-lint-gh-111.json
deleted file mode 100644
index 5410cdb0a..000000000
--- a/test/fixtures/tree/remarkjs-remark-lint-gh-111.json
+++ /dev/null
@@ -1,280 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": true,
-      "start": 1,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "strong",
-                  "children": [
-                    {
-                      "type": "text",
-                      "value": "Fork",
-                      "position": {
-                        "start": {
-                          "line": 1,
-                          "column": 6,
-                          "offset": 5
-                        },
-                        "end": {
-                          "line": 1,
-                          "column": 10,
-                          "offset": 9
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 4,
-                      "offset": 3
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 12,
-                      "offset": 11
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 4,
-                  "offset": 3
-                },
-                "end": {
-                  "line": 1,
-                  "column": 12,
-                  "offset": 11
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 12,
-              "offset": 11
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "strong",
-                  "children": [
-                    {
-                      "type": "text",
-                      "value": "Clone",
-                      "position": {
-                        "start": {
-                          "line": 2,
-                          "column": 6,
-                          "offset": 17
-                        },
-                        "end": {
-                          "line": 2,
-                          "column": 11,
-                          "offset": 22
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 2,
-                      "column": 4,
-                      "offset": 15
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 13,
-                      "offset": 24
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 2,
-                  "column": 4,
-                  "offset": 15
-                },
-                "end": {
-                  "line": 2,
-                  "column": 13,
-                  "offset": 24
-                }
-              }
-            },
-            {
-              "type": "code",
-              "lang": null,
-              "meta": null,
-              "value": " git clone ",
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 4,
-                  "offset": 29
-                },
-                "end": {
-                  "line": 4,
-                  "column": 29,
-                  "offset": 54
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 12
-            },
-            "end": {
-              "line": 4,
-              "column": 29,
-              "offset": 54
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": true,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "strong",
-                  "children": [
-                    {
-                      "type": "text",
-                      "value": "Configure remotes",
-                      "position": {
-                        "start": {
-                          "line": 5,
-                          "column": 6,
-                          "offset": 60
-                        },
-                        "end": {
-                          "line": 5,
-                          "column": 23,
-                          "offset": 77
-                        }
-                      }
-                    }
-                  ],
-                  "position": {
-                    "start": {
-                      "line": 5,
-                      "column": 4,
-                      "offset": 58
-                    },
-                    "end": {
-                      "line": 5,
-                      "column": 25,
-                      "offset": 79
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 4,
-                  "offset": 58
-                },
-                "end": {
-                  "line": 5,
-                  "column": 25,
-                  "offset": 79
-                }
-              }
-            },
-            {
-              "type": "code",
-              "lang": null,
-              "meta": null,
-              "value": " cd \n git remote add upstream ",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 4,
-                  "offset": 84
-                },
-                "end": {
-                  "line": 8,
-                  "column": 47,
-                  "offset": 152
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 55
-            },
-            "end": {
-              "line": 8,
-              "column": 47,
-              "offset": 152
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 8,
-          "column": 47,
-          "offset": 152
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 9,
-      "column": 1,
-      "offset": 153
-    }
-  }
-}
diff --git a/test/fixtures/tree/same-bullet.nooutput.json b/test/fixtures/tree/same-bullet.nooutput.json
deleted file mode 100644
index 17ec46ace..000000000
--- a/test/fixtures/tree/same-bullet.nooutput.json
+++ /dev/null
@@ -1,233 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "test",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 3,
-                      "offset": 2
-                    },
-                    "end": {
-                      "line": 1,
-                      "column": 7,
-                      "offset": 6
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 7,
-              "offset": 6
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 7,
-          "offset": 6
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "test",
-                  "position": {
-                    "start": {
-                      "line": 2,
-                      "column": 3,
-                      "offset": 9
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 7,
-                      "offset": 13
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 2,
-                  "column": 3,
-                  "offset": 9
-                },
-                "end": {
-                  "line": 2,
-                  "column": 7,
-                  "offset": 13
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 2,
-              "column": 1,
-              "offset": 7
-            },
-            "end": {
-              "line": 2,
-              "column": 7,
-              "offset": 13
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 2,
-          "column": 1,
-          "offset": 7
-        },
-        "end": {
-          "line": 2,
-          "column": 7,
-          "offset": 13
-        }
-      }
-    },
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": false,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "test",
-                  "position": {
-                    "start": {
-                      "line": 3,
-                      "column": 3,
-                      "offset": 16
-                    },
-                    "end": {
-                      "line": 3,
-                      "column": 7,
-                      "offset": 20
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 3,
-                  "offset": 16
-                },
-                "end": {
-                  "line": 3,
-                  "column": 7,
-                  "offset": 20
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 14
-            },
-            "end": {
-              "line": 3,
-              "column": 7,
-              "offset": 20
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 14
-        },
-        "end": {
-          "line": 3,
-          "column": 7,
-          "offset": 20
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 1,
-      "offset": 21
-    }
-  }
-}
diff --git a/test/fixtures/tree/stringify-escape.json b/test/fixtures/tree/stringify-escape.json
deleted file mode 100644
index 1ee0a7be0..000000000
--- a/test/fixtures/tree/stringify-escape.json
+++ /dev/null
@@ -1,2020 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Characters that should be escaped in general:",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 46,
-              "offset": 45
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 46,
-          "offset": 45
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "\\ ` * [",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 47
-            },
-            "end": {
-              "line": 3,
-              "column": 12,
-              "offset": 58
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 47
-        },
-        "end": {
-          "line": 3,
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diff --git a/test/fixtures/tree/strong-and-em-together-one.json b/test/fixtures/tree/strong-and-em-together-one.json
deleted file mode 100644
index 6f589f98b..000000000
--- a/test/fixtures/tree/strong-and-em-together-one.json
+++ /dev/null
@@ -1,349 +0,0 @@
-{
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-        "end": {
-          "line": 3,
-          "column": 23,
-          "offset": 52
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "strong",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "This is strong and em.",
-                  "position": {
-                    "start": {
-                      "line": 5,
-                      "column": 4,
-                      "offset": 57
-                    },
-                    "end": {
-                      "line": 5,
-                      "column": 26,
-                      "offset": 79
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 2,
-                  "offset": 55
-                },
-                "end": {
-                  "line": 5,
-                  "column": 28,
-                  "offset": 81
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 54
-            },
-            "end": {
-              "line": 5,
-              "column": 29,
-              "offset": 82
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 54
-        },
-        "end": {
-          "line": 5,
-          "column": 29,
-          "offset": 82
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "So is ",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 84
-            },
-            "end": {
-              "line": 7,
-              "column": 7,
-              "offset": 90
-            }
-          }
-        },
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "strong",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "this",
-                  "position": {
-                    "start": {
-                      "line": 7,
-                      "column": 10,
-                      "offset": 93
-                    },
-                    "end": {
-                      "line": 7,
-                      "column": 14,
-                      "offset": 97
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 8,
-                  "offset": 91
-                },
-                "end": {
-                  "line": 7,
-                  "column": 16,
-                  "offset": 99
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 7,
-              "offset": 90
-            },
-            "end": {
-              "line": 7,
-              "column": 17,
-              "offset": 100
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": " word.",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 17,
-              "offset": 100
-            },
-            "end": {
-              "line": 7,
-              "column": 23,
-              "offset": 106
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 84
-        },
-        "end": {
-          "line": 7,
-          "column": 23,
-          "offset": 106
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 8,
-      "column": 1,
-      "offset": 107
-    }
-  }
-}
diff --git a/test/fixtures/tree/strong-and-em-together-two.nooutput.json b/test/fixtures/tree/strong-and-em-together-two.nooutput.json
deleted file mode 100644
index 767c4cb2c..000000000
--- a/test/fixtures/tree/strong-and-em-together-two.nooutput.json
+++ /dev/null
@@ -1,345 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "perform_complicated_task",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 25,
-              "offset": 24
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 25,
-          "offset": 24
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "do_this_and_do_that_and_another_thing",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 26
-            },
-            "end": {
-              "line": 3,
-              "column": 38,
-              "offset": 63
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 26
-        },
-        "end": {
-          "line": 3,
-          "column": 38,
-          "offset": 63
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "perform",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 65
-            },
-            "end": {
-              "line": 5,
-              "column": 8,
-              "offset": 72
-            }
-          }
-        },
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "complicated",
-              "position": {
-                "start": {
-                  "line": 5,
-                  "column": 9,
-                  "offset": 73
-                },
-                "end": {
-                  "line": 5,
-                  "column": 20,
-                  "offset": 84
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 8,
-              "offset": 72
-            },
-            "end": {
-              "line": 5,
-              "column": 21,
-              "offset": 85
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "task",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 21,
-              "offset": 85
-            },
-            "end": {
-              "line": 5,
-              "column": 25,
-              "offset": 89
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 65
-        },
-        "end": {
-          "line": 5,
-          "column": 25,
-          "offset": 89
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "do",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 91
-            },
-            "end": {
-              "line": 7,
-              "column": 3,
-              "offset": 93
-            }
-          }
-        },
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "this",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 4,
-                  "offset": 94
-                },
-                "end": {
-                  "line": 7,
-                  "column": 8,
-                  "offset": 98
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 3,
-              "offset": 93
-            },
-            "end": {
-              "line": 7,
-              "column": 9,
-              "offset": 99
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "and",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 9,
-              "offset": 99
-            },
-            "end": {
-              "line": 7,
-              "column": 12,
-              "offset": 102
-            }
-          }
-        },
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "do",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 13,
-                  "offset": 103
-                },
-                "end": {
-                  "line": 7,
-                  "column": 15,
-                  "offset": 105
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 12,
-              "offset": 102
-            },
-            "end": {
-              "line": 7,
-              "column": 16,
-              "offset": 106
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "that",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 16,
-              "offset": 106
-            },
-            "end": {
-              "line": 7,
-              "column": 20,
-              "offset": 110
-            }
-          }
-        },
-        {
-          "type": "emphasis",
-          "children": [
-            {
-              "type": "text",
-              "value": "and",
-              "position": {
-                "start": {
-                  "line": 7,
-                  "column": 21,
-                  "offset": 111
-                },
-                "end": {
-                  "line": 7,
-                  "column": 24,
-                  "offset": 114
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 20,
-              "offset": 110
-            },
-            "end": {
-              "line": 7,
-              "column": 25,
-              "offset": 115
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "another*thing",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 25,
-              "offset": 115
-            },
-            "end": {
-              "line": 7,
-              "column": 38,
-              "offset": 128
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 7,
-          "column": 1,
-          "offset": 91
-        },
-        "end": {
-          "line": 7,
-          "column": 38,
-          "offset": 128
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 8,
-      "column": 1,
-      "offset": 129
-    }
-  }
-}
diff --git a/test/fixtures/tree/strong-emphasis.json b/test/fixtures/tree/strong-emphasis.json
deleted file mode 100644
index ce71b0352..000000000
--- a/test/fixtures/tree/strong-emphasis.json
+++ /dev/null
@@ -1,279 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Foo ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 5,
-              "offset": 4
-            }
-          }
-        },
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "text",
-              "value": "bar",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 7,
-                  "offset": 6
-                },
-                "end": {
-                  "line": 1,
-                  "column": 10,
-                  "offset": 9
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 5,
-              "offset": 4
-            },
-            "end": {
-              "line": 1,
-              "column": 12,
-              "offset": 11
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": " ",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 12,
-              "offset": 11
-            },
-            "end": {
-              "line": 1,
-              "column": 13,
-              "offset": 12
-            }
-          }
-        },
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "text",
-              "value": "baz",
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 15,
-                  "offset": 14
-                },
-                "end": {
-                  "line": 1,
-                  "column": 18,
-                  "offset": 17
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 13,
-              "offset": 12
-            },
-            "end": {
-              "line": 1,
-              "column": 20,
-              "offset": 19
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 20,
-              "offset": 19
-            },
-            "end": {
-              "line": 1,
-              "column": 21,
-              "offset": 20
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 21,
-          "offset": 20
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Foo ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 1,
-              "offset": 22
-            },
-            "end": {
-              "line": 3,
-              "column": 5,
-              "offset": 26
-            }
-          }
-        },
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "text",
-              "value": "bar",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 7,
-                  "offset": 28
-                },
-                "end": {
-                  "line": 3,
-                  "column": 10,
-                  "offset": 31
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 5,
-              "offset": 26
-            },
-            "end": {
-              "line": 3,
-              "column": 12,
-              "offset": 33
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": " ",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 12,
-              "offset": 33
-            },
-            "end": {
-              "line": 3,
-              "column": 13,
-              "offset": 34
-            }
-          }
-        },
-        {
-          "type": "strong",
-          "children": [
-            {
-              "type": "text",
-              "value": "baz",
-              "position": {
-                "start": {
-                  "line": 3,
-                  "column": 15,
-                  "offset": 36
-                },
-                "end": {
-                  "line": 3,
-                  "column": 18,
-                  "offset": 39
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 13,
-              "offset": 34
-            },
-            "end": {
-              "line": 3,
-              "column": 20,
-              "offset": 41
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": ".",
-          "position": {
-            "start": {
-              "line": 3,
-              "column": 20,
-              "offset": 41
-            },
-            "end": {
-              "line": 3,
-              "column": 21,
-              "offset": 42
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 3,
-          "column": 1,
-          "offset": 22
-        },
-        "end": {
-          "line": 3,
-          "column": 21,
-          "offset": 42
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 3,
-      "column": 21,
-      "offset": 42
-    }
-  }
-}
diff --git a/test/fixtures/tree/strong-initial-white-space.json b/test/fixtures/tree/strong-initial-white-space.json
deleted file mode 100644
index c798cf679..000000000
--- a/test/fixtures/tree/strong-initial-white-space.json
+++ /dev/null
@@ -1,83 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "** bar **.",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 11,
-              "offset": 10
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 1,
-          "column": 11,
-          "offset": 10
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "__ bar __.",
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 13
-            },
-            "end": {
-              "line": 4,
-              "column": 11,
-              "offset": 23
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 4,
-          "column": 1,
-          "offset": 13
-        },
-        "end": {
-          "line": 4,
-          "column": 11,
-          "offset": 23
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 4,
-      "column": 11,
-      "offset": 23
-    }
-  }
-}
diff --git a/test/fixtures/tree/tabs-and-spaces.json b/test/fixtures/tree/tabs-and-spaces.json
deleted file mode 100644
index 9a19ec855..000000000
--- a/test/fixtures/tree/tabs-and-spaces.json
+++ /dev/null
@@ -1,294 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "this is a list item\nindented with tabs",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 3,
-                      "offset": 2
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 20,
-                      "offset": 41
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 1,
-                  "column": 3,
-                  "offset": 2
-                },
-                "end": {
-                  "line": 2,
-                  "column": 20,
-                  "offset": 41
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 2,
-              "column": 20,
-              "offset": 41
-            }
-          }
-        },
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "this is a list item\nindented with spaces",
-                  "position": {
-                    "start": {
-                      "line": 4,
-                      "column": 5,
-                      "offset": 47
-                    },
-                    "end": {
-                      "line": 5,
-                      "column": 25,
-                      "offset": 91
-                    }
-                  }
-                }
-              ],
-              "position": {
-                "start": {
-                  "line": 4,
-                  "column": 5,
-                  "offset": 47
-                },
-                "end": {
-                  "line": 5,
-                  "column": 25,
-                  "offset": 91
-                }
-              }
-            }
-          ],
-          "position": {
-            "start": {
-              "line": 4,
-              "column": 1,
-              "offset": 43
-            },
-            "end": {
-              "line": 5,
-              "column": 25,
-              "offset": 91
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 5,
-          "column": 25,
-          "offset": 91
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "Code:",
-          "position": {
-            "start": {
-              "line": 7,
-              "column": 1,
-              "offset": 93
-            },
-            "end": {
-              "line": 7,
-              "column": 6,
-              "offset": 98
-            }
-          }
-        }
-      ],
-      "position": {
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-      }
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-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "this code block is indented by one tab",
-      "position": {
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-      "type": "code",
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-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "+\tthis is an example list item\n\tindented with tabs\n\n+   this is an example list item\n    indented with spaces",
-      "position": {
-        "start": {
-          "line": 17,
-          "column": 1,
-          "offset": 196
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-  }
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diff --git a/test/fixtures/tree/tabs.json b/test/fixtures/tree/tabs.json
deleted file mode 100644
index 9a19ec855..000000000
--- a/test/fixtures/tree/tabs.json
+++ /dev/null
@@ -1,294 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "list",
-      "ordered": false,
-      "start": null,
-      "spread": true,
-      "children": [
-        {
-          "type": "listItem",
-          "spread": false,
-          "checked": null,
-          "children": [
-            {
-              "type": "paragraph",
-              "children": [
-                {
-                  "type": "text",
-                  "value": "this is a list item\nindented with tabs",
-                  "position": {
-                    "start": {
-                      "line": 1,
-                      "column": 3,
-                      "offset": 2
-                    },
-                    "end": {
-                      "line": 2,
-                      "column": 20,
-                      "offset": 41
-                    }
-                  }
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-              ],
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-                },
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-                  "type": "text",
-                  "value": "this is a list item\nindented with spaces",
-                  "position": {
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-      "value": "+\tthis is an example list item\n\tindented with tabs\n\n+   this is an example list item\n    indented with spaces",
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diff --git a/test/fixtures/tree/tidyness.json b/test/fixtures/tree/tidyness.json
deleted file mode 100644
index 8772675c7..000000000
--- a/test/fixtures/tree/tidyness.json
+++ /dev/null
@@ -1,243 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
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-              "value": "A list within a blockquote:",
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-                      "position": {
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-                          "column": 5,
-                          "offset": 37
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diff --git a/test/fixtures/tree/title-attributes.json b/test/fixtures/tree/title-attributes.json
deleted file mode 100644
index 294acdbf7..000000000
--- a/test/fixtures/tree/title-attributes.json
+++ /dev/null
@@ -1,2124 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "Links",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 3,
-              "offset": 2
-            },
-            "end": {
-              "line": 1,
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-        "end": {
-          "line": 1,
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-          "offset": 7
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "| Implementation | Characters | Nested | Mismatched | Escaped | Named Entities | Numbered Entities |\n| -------------- | ---------- |------- | ---------- | ------- | -------------- | ----------------- |\n| Markdown.pl    | ",
-          "position": {
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-              "offset": 233
-            }
-          }
-        },
-        {
-          "type": "text",
-          "value": "        | Yes    | Yes        | No      | Yes            | Yes               |\n| GitHub         | ",
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-          "type": "text",
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-          "type": "image",
-          "title": "and \"numbered entities\"",
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-          "alt": "Hello",
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-      "position": {
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-    },
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-      "type": "heading",
-      "depth": 2,
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-          "type": "text",
-          "value": "Single quotes",
-          "position": {
-            "start": {
-              "line": 73,
-              "column": 4,
-              "offset": 2376
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-    {
-      "type": "paragraph",
-      "children": [
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-          "type": "image",
-          "title": "and text",
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-          "alt": "Hello",
-          "position": {
-            "start": {
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-              "column": 1,
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-            "end": {
-              "line": 75,
-              "column": 33,
-              "offset": 2423
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-          "line": 75,
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-    {
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-          "type": "text",
-          "value": "![Hello](./world.png 'and 'matching delimiters'')",
-          "position": {
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-            "end": {
-              "line": 77,
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-          "line": 77,
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-    {
-      "type": "paragraph",
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-          "value": "![Hello](./world.png 'and 'mismatched delimiters')",
-          "position": {
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-              "line": 79,
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-            "end": {
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-        }
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-    {
-      "type": "paragraph",
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-          "type": "image",
-          "title": "and 'escapes'",
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-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 81,
-              "column": 1,
-              "offset": 2528
-            },
-            "end": {
-              "line": 81,
-              "column": 40,
-              "offset": 2567
-            }
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-      "position": {
-        "start": {
-          "line": 81,
-          "column": 1,
-          "offset": 2528
-        },
-        "end": {
-          "line": 81,
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-          "offset": 2567
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-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": "and 'named entities'",
-          "url": "./world.png",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 83,
-              "column": 1,
-              "offset": 2569
-            },
-            "end": {
-              "line": 83,
-              "column": 55,
-              "offset": 2623
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 83,
-          "column": 1,
-          "offset": 2569
-        },
-        "end": {
-          "line": 83,
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-          "offset": 2623
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": "and 'numbered entities'",
-          "url": "./world.png",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 85,
-              "column": 1,
-              "offset": 2625
-            },
-            "end": {
-              "line": 85,
-              "column": 58,
-              "offset": 2682
-            }
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-      ],
-      "position": {
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-          "column": 1,
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-        },
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-          "line": 85,
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-          "offset": 2682
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 2,
-      "children": [
-        {
-          "type": "text",
-          "value": "Parentheses",
-          "position": {
-            "start": {
-              "line": 87,
-              "column": 4,
-              "offset": 2687
-            },
-            "end": {
-              "line": 87,
-              "column": 15,
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-            }
-          }
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-      ],
-      "position": {
-        "start": {
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-        },
-        "end": {
-          "line": 87,
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-          "offset": 2698
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-      }
-    },
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-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": "and text",
-          "url": "./world.png",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 89,
-              "column": 1,
-              "offset": 2700
-            },
-            "end": {
-              "line": 89,
-              "column": 33,
-              "offset": 2732
-            }
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-      "position": {
-        "start": {
-          "line": 89,
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-          "offset": 2700
-        },
-        "end": {
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-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": "and (matching delimiters",
-          "url": "./world.png",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 91,
-              "column": 1,
-              "offset": 2734
-            },
-            "end": {
-              "line": 91,
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-              "offset": 2782
-            }
-          }
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-        {
-          "type": "text",
-          "value": ")",
-          "position": {
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-              "offset": 2782
-            },
-            "end": {
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-            }
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-      "position": {
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-          "column": 1,
-          "offset": 2734
-        },
-        "end": {
-          "line": 91,
-          "column": 50,
-          "offset": 2783
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": "and (mismatched delimiters",
-          "url": "./world.png",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 93,
-              "column": 1,
-              "offset": 2785
-            },
-            "end": {
-              "line": 93,
-              "column": 51,
-              "offset": 2835
-            }
-          }
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-      ],
-      "position": {
-        "start": {
-          "line": 93,
-          "column": 1,
-          "offset": 2785
-        },
-        "end": {
-          "line": 93,
-          "column": 51,
-          "offset": 2835
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": "and (escapes)",
-          "url": "./world.png",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 95,
-              "column": 1,
-              "offset": 2837
-            },
-            "end": {
-              "line": 95,
-              "column": 40,
-              "offset": 2876
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
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-          "column": 1,
-          "offset": 2837
-        },
-        "end": {
-          "line": 95,
-          "column": 40,
-          "offset": 2876
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": "and (named entities)",
-          "url": "./world.png",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 97,
-              "column": 1,
-              "offset": 2878
-            },
-            "end": {
-              "line": 97,
-              "column": 55,
-              "offset": 2932
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 97,
-          "column": 1,
-          "offset": 2878
-        },
-        "end": {
-          "line": 97,
-          "column": 55,
-          "offset": 2932
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "image",
-          "title": "and (numbered entities)",
-          "url": "./world.png",
-          "alt": "Hello",
-          "position": {
-            "start": {
-              "line": 99,
-              "column": 1,
-              "offset": 2934
-            },
-            "end": {
-              "line": 99,
-              "column": 58,
-              "offset": 2991
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 99,
-          "column": 1,
-          "offset": 2934
-        },
-        "end": {
-          "line": 99,
-          "column": 58,
-          "offset": 2991
-        }
-      }
-    }
-  ],
-  "position": {
-    "start": {
-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 100,
-      "column": 1,
-      "offset": 2992
-    }
-  }
-}
diff --git a/test/fixtures/tree/toplevel-paragraphs.nooutput.json b/test/fixtures/tree/toplevel-paragraphs.nooutput.json
deleted file mode 100644
index e9d70ba81..000000000
--- a/test/fixtures/tree/toplevel-paragraphs.nooutput.json
+++ /dev/null
@@ -1,682 +0,0 @@
-{
-  "type": "root",
-  "children": [
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "hello world\nhow are you\nhow are you",
-          "position": {
-            "start": {
-              "line": 1,
-              "column": 1,
-              "offset": 0
-            },
-            "end": {
-              "line": 3,
-              "column": 16,
-              "offset": 43
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 1,
-          "column": 1,
-          "offset": 0
-        },
-        "end": {
-          "line": 3,
-          "column": 16,
-          "offset": 43
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "hello world",
-          "position": {
-            "start": {
-              "line": 5,
-              "column": 1,
-              "offset": 45
-            },
-            "end": {
-              "line": 5,
-              "column": 12,
-              "offset": 56
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 5,
-          "column": 1,
-          "offset": 45
-        },
-        "end": {
-          "line": 5,
-          "column": 12,
-          "offset": 56
-        }
-      }
-    },
-    {
-      "type": "code",
-      "lang": null,
-      "meta": null,
-      "value": "how are you",
-      "position": {
-        "start": {
-          "line": 6,
-          "column": 1,
-          "offset": 57
-        },
-        "end": {
-          "line": 8,
-          "column": 4,
-          "offset": 76
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "hello world",
-          "position": {
-            "start": {
-              "line": 10,
-              "column": 1,
-              "offset": 78
-            },
-            "end": {
-              "line": 10,
-              "column": 12,
-              "offset": 89
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 10,
-          "column": 1,
-          "offset": 78
-        },
-        "end": {
-          "line": 10,
-          "column": 12,
-          "offset": 89
-        }
-      }
-    },
-    {
-      "type": "thematicBreak",
-      "position": {
-        "start": {
-          "line": 11,
-          "column": 1,
-          "offset": 90
-        },
-        "end": {
-          "line": 11,
-          "column": 6,
-          "offset": 95
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "hello world",
-          "position": {
-            "start": {
-              "line": 13,
-              "column": 1,
-              "offset": 97
-            },
-            "end": {
-              "line": 13,
-              "column": 12,
-              "offset": 108
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 13,
-          "column": 1,
-          "offset": 97
-        },
-        "end": {
-          "line": 13,
-          "column": 12,
-          "offset": 108
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "how are you",
-          "position": {
-            "start": {
-              "line": 14,
-              "column": 3,
-              "offset": 111
-            },
-            "end": {
-              "line": 14,
-              "column": 14,
-              "offset": 122
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 14,
-          "column": 1,
-          "offset": 109
-        },
-        "end": {
-          "line": 14,
-          "column": 14,
-          "offset": 122
-        }
-      }
-    },
-    {
-      "type": "heading",
-      "depth": 1,
-      "children": [
-        {
-          "type": "text",
-          "value": "hello world\nhow are you",
-          "position": {
-            "start": {
-              "line": 16,
-              "column": 1,
-              "offset": 124
-            },
-            "end": {
-              "line": 17,
-              "column": 12,
-              "offset": 147
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 16,
-          "column": 1,
-          "offset": 124
-        },
-        "end": {
-          "line": 18,
-          "column": 12,
-          "offset": 159
-        }
-      }
-    },
-    {
-      "type": "paragraph",
-      "children": [
-        {
-          "type": "text",
-          "value": "hello world",
-          "position": {
-            "start": {
-              "line": 20,
-              "column": 1,
-              "offset": 161
-            },
-            "end": {
-              "line": 20,
-              "column": 12,
-              "offset": 172
-            }
-          }
-        }
-      ],
-      "position": {
-        "start": {
-          "line": 20,
-          "column": 1,
-          "offset": 161
-        },
-        "end": {
-          "line": 20,
-          "column": 12,
-          "offset": 172
-        }
-      }
-    },
-    {
-      "type": "blockquote",
-      "children": [
-        {
-          "type": "paragraph",
-          "children": [
-            {
-              "type": "text",
-              "value": "how are you",
-              "position": {
-                "start": {
-                  "line": 21,
-                  "column": 3,
-                  "offset": 175
-                },
-                "end": {
-                  "line": 21,
-                  "column": 14,
-                  "offset": 186
-                }
-              }
-            }
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diff --git a/test/fixtures/tree/tricky-list.json b/test/fixtures/tree/tricky-list.json
deleted file mode 100644
index 03b954669..000000000
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-      "line": 1,
-      "column": 1,
-      "offset": 0
-    },
-    "end": {
-      "line": 16,
-      "column": 1,
-      "offset": 135
-    }
-  }
-}
diff --git a/test/index.js b/test/index.js
deleted file mode 100644
index 4bb6b9132..000000000
--- a/test/index.js
+++ /dev/null
@@ -1,53 +0,0 @@
-import assert from 'node:assert/strict'
-import test from 'node:test'
-import {removePosition} from 'unist-util-remove-position'
-import {assert as mdastAssert} from 'mdast-util-assert'
-import {remark} from '../packages/remark/index.js'
-import {fixtures} from './fixtures/index.js'
-
-test('fixtures', async (t) => {
-  let index = -1
-
-  while (++index < fixtures.length) {
-    const fixture = fixtures[index]
-
-    // eslint-disable-next-line no-await-in-loop
-    await t.test(fixture.name, () => {
-      const actualTree = remark().parse(fixture.input)
-
-      mdastAssert(actualTree)
-
-      assert.deepEqual(
-        actualTree,
-        fixture.tree,
-        'should parse `' + fixture.name + '` correctly'
-      )
-
-      const actualOutput = remark()
-        .data('settings', fixture.stringify)
-        .stringify(actualTree)
-
-      if (fixture.output !== false) {
-        const reparsedTree = remark().parse(actualOutput)
-
-        assert(reparsedTree)
-        removePosition(actualTree, {force: true})
-        removePosition(reparsedTree, {force: true})
-
-        assert.deepEqual(
-          actualTree,
-          reparsedTree,
-          'should stringify `' + fixture.name + '`'
-        )
-      }
-
-      if (fixture.output === true) {
-        assert.equal(
-          fixture.input,
-          actualOutput,
-          'should stringify `' + fixture.name + '` exact'
-        )
-      }
-    })
-  }
-})