Setext headers which start like ordered lists are parsed as a list item

[KyleAMathews]

E.g.

1. first header
==========

2. second header
---------------

becomes

1.  # first header

2.  second header

* * *

[wooorm]

Could you expand on what you expect?

Here’s how GH, markdown-it, and CommonMark produce:

1. first header ==========

2. second header

---

Whereas remark produces:

1. first header

2. second header

---

remark is definitely outnumbered here, but from what I see the others do this shouldn’t be headers!

[KyleAMathews]

Huh, weird. I assumed that the header syntax would take precedent over the list syntax so they'd both become headers e.g. <h1>1. first header</h1>. Which is what happens with ATX syntax. I'd assumed the two should work the same.

I was working on a project where I was converting html to markdown using pandoc then doing some extra refinements using Remark's AST but ran into this issue. Telling pandoc to always use ATX solved things I guess.

[wooorm]

Heya, just wanted to give an update about micromark, it’s sort-of a new motor that we’ll soon use in remark to parse markdown. It’s not yet 100% ready but will be relatively soon. The good news is, it fixes this issue! (P.S. see this twitter thread for some more info!)

[wooorm]

Sorry for the wait! I just wanted to share that there’s now a PR that solves this issue: #536.

[wooorm]

This is now released in remark@13.0.0