Variables with no space between them break syntax highlighting

[kamilturek]

Closes #31.

Tests output:

$ npm test

> syntax@0.2.0 test
> npm run test:snap


> syntax@0.2.0 test:snap
> npm run test:snap:hcl && npm run test:snap:sentinel && npm run test:snap:terraform


> syntax@0.2.0 test:snap:hcl
> npx vscode-tmgrammar-snap -s source.hcl -g syntaxes/hcl.tmGrammar.json -t "tests/snapshot/hcl/*.hcl"

✓ tests/snapshot/hcl/basic.hcl run successfully.
✓ tests/snapshot/hcl/blocks.hcl run successfully.
✓ tests/snapshot/hcl/comments.hcl run successfully.
✓ tests/snapshot/hcl/data_sources.hcl run successfully.
✓ tests/snapshot/hcl/expressions_conditional.hcl run successfully.
✓ tests/snapshot/hcl/expressions_dynamic.hcl run successfully.
✓ tests/snapshot/hcl/expressions_for.hcl run successfully.
Generating snapshot tests/snapshot/hcl/expressions_functions.hcl.snap
✓ tests/snapshot/hcl/expressions_operators.hcl run successfully.
✓ tests/snapshot/hcl/expressions_splat.hcl run successfully.
✓ tests/snapshot/hcl/expressions_strings.hcl run successfully.
✓ tests/snapshot/hcl/issue19.hcl run successfully.
✓ tests/snapshot/hcl/issue809.hcl run successfully.
✓ tests/snapshot/hcl/issue927.hcl run successfully.
✓ tests/snapshot/hcl/issue941.hcl run successfully.
✓ tests/snapshot/hcl/modules.hcl run successfully.
✓ tests/snapshot/hcl/nested_maps.hcl run successfully.
✓ tests/snapshot/hcl/providers.hcl run successfully.
✓ tests/snapshot/hcl/variables_input.hcl run successfully.
✓ tests/snapshot/hcl/variables_local.hcl run successfully.
✓ tests/snapshot/hcl/variables_output.hcl run successfully.

> syntax@0.2.0 test:snap:sentinel
> npx vscode-tmgrammar-snap -s source.sentinel -g syntaxes/sentinel.tmGrammar.json -t "tests/snapshot/sentinel/*.sentinel"

✓ tests/snapshot/sentinel/basic.sentinel run successfully.

> syntax@0.2.0 test:snap:terraform
> npx vscode-tmgrammar-snap -s source.hcl.terraform -g syntaxes/terraform.tmGrammar.json  -g syntaxes/hcl.tmGrammar.json -t "tests/snapshot/terraform/*.tf"

✓ tests/snapshot/terraform/basic.tf run successfully.
✓ tests/snapshot/terraform/blocks.tf run successfully.
✓ tests/snapshot/terraform/comments.tf run successfully.
✓ tests/snapshot/terraform/data_sources.tf run successfully.
✓ tests/snapshot/terraform/expressions_conditional.tf run successfully.
✓ tests/snapshot/terraform/expressions_dynamic.tf run successfully.
✓ tests/snapshot/terraform/expressions_for.tf run successfully.
✓ tests/snapshot/terraform/expressions_functions.tf run successfully.
✓ tests/snapshot/terraform/expressions_operators.tf run successfully.
✓ tests/snapshot/terraform/expressions_splat.tf run successfully.
✓ tests/snapshot/terraform/expressions_strings.tf run successfully.
✓ tests/snapshot/terraform/issue19.tf run successfully.
✓ tests/snapshot/terraform/issue809.tf run successfully.
✓ tests/snapshot/terraform/issue927.tf run successfully.
✓ tests/snapshot/terraform/issue941.tf run successfully.
✓ tests/snapshot/terraform/modules.tf run successfully.
✓ tests/snapshot/terraform/nested_maps.tf run successfully.
✓ tests/snapshot/terraform/providers.tf run successfully.
✓ tests/snapshot/terraform/variables_input.tf run successfully.
✓ tests/snapshot/terraform/variables_local.tf run successfully.
✓ tests/snapshot/terraform/variables_output.tf run successfully.

Before:

After:

[jpogran]

Thank you for the contribution! It may take awhile for us to review this, we have a couple other things in flight but will review this soon.

[radeksimko]

LGTM, thank you for the fix and the screenshots as well!