commonmark-ext-gfm-tables single column table

[leobuettiker]

Would expect to be able to render a single column table. Following code does not render a table.

    final String input = "| First Header |\n" +
            "| ------------- |\n" +
            "| Content Cell |\n" +
            "| Content Cell |\n";
    List<Extension> extensions = Arrays.asList(TablesExtension.create());
    Parser parser = Parser.builder().extensions(extensions).build();
    Node document = parser.parse(input);
    HtmlRenderer renderer = HtmlRenderer.builder().extensions(extensions).build();
    System.out.println(renderer.render(document));

[robinst]

Confirmed, definitely a bug. Looks like this is the minimal syntax for a single column:

|Header
---

[leobuettiker]

Unfortunately the specification of the table is not clear for edge cases https://help.github.com/articles/github-flavored-markdown/#tables

As I read the specification your example would be valid (minimal) tables. So would be an example where the vertical bar would be on the right.

[robinst]

Yeah, it doesn't really have a spec :). But you can try the syntax using the Preview in comments here.

What I'm not happy about with the above example is that in CommonMark, it's a setext header. And extensions should try to avoid changing existing block-level syntax. I'm thinking of requiring at least one pipe for the separator line, e.g. these would be tables:

|Header
|---

Header|
---|

And your original example as well. Thoughts? I have a patch that implements this, I'll push it soon.

[robinst]

Fixed as described above. I'll release this soon.

[robinst]

Released in 0.2.0.

[leobuettiker]

Thanks a lot!