Uncatched IndexError at mdformat_myst/_directives.py", line 104, in parse_opts_and_content

[landure]

Describe the problem

Using a fresh install of mdformat-myst (mdformat 0.7.11 (mdformat_frontmatter: 0.4.1, mdformat_myst: 0.1.4, mdformat_tables: 0.4.1)) on a complex and broken md file (see steps to reproduce bellow) throw this exception:

raceback (most recent call last):
  File "/home/biapy/.local/bin/mdformat", line 8, in <module>
    sys.exit(run())
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/__main__.py", line 8, in run
    exit_code = mdformat._cli.run(sys.argv[1:])
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/_cli.py", line 74, in run
    formatted_str = mdformat.text(
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/_api.py", line 29, in text
    rendering = mdit.render(md)
  File "/home/biapy/.local/lib/python3.9/site-packages/markdown_it/main.py", line 275, in render
    return self.renderer.render(self.parse(src, env), self.options, env)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/renderer/__init__.py", line 56, in render
    return self.render_tree(tree, options, env, finalize=finalize)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/renderer/__init__.py", line 90, in render_tree
    text = tree.render(render_context)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/renderer/_tree.py", line 11, in render
    text = renderer(self, context)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/renderer/_context.py", line 48, in render_children
    return separator.join(child.render(context) for child in node.children)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/renderer/_context.py", line 48, in <genexpr>
    return separator.join(child.render(context) for child in node.children)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat/renderer/_tree.py", line 11, in render
    text = renderer(self, context)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat_myst/_directives.py", line 64, in fence
    code_block = format_directive_content(code_block)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat_myst/_directives.py", line 75, in format_directive_content
    parse_result = parse_opts_and_content(raw_content)
  File "/home/biapy/.local/lib/python3.9/site-packages/mdformat_myst/_directives.py", line 104, in parse_opts_and_content
    line = lines.pop(0)
IndexError: pop from empty list

Link to your repository or website

No response

Steps to reproduce

Running this command with additions-to-a-default-ubuntu-install.md:

~/.local/bin/mdformat  'additions-to-a-default-ubuntu-install.md'

The version of Python you're using

3.9.7

Your operating system

Lubuntu 21.10

Versions of your packages

No response

Additional context

The markdown is partially generated using Clipboard 2 Markdown and copy pasting content from Compléments à l'installation d'Ubuntu

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[welcome]

Thanks for opening your first issue here! Engagement like this is essential for open source projects! 🤗

If you haven't done so already, check out EBP's Code of Conduct. Also, please try to follow the issue template as it helps other community members to contribute more effectively.

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Welcome to the EBP community! 🎉

[hukkin]

Thanks this is an issue with the mdformat-myst plugin so I've transferred the issue.

I'm fairly sure this will be fixed by #12

[landure]

Hi, i confirm #12 fix the issue.

[hukkin]

Fixed in #12