Commonmark & gfm parsing difference for links + raw HTML

[TripleCamera]

Hi. I am using pandoc to convert markdown to html. For the following lines:

aaabbb

aaa<span></span>bbb

[link](https://baidu.com)aaabbb

[link](https://baidu.com)aaa<span></span>bbb

When the source language is commonmark, the raw HTML tags are preserved when following a link:

<p>aaabbb</p>
<p>aaa<span></span>bbb</p>
<p><a href="https://baidu.com">link</a>aaabbb</p>
<p><a href="https://baidu.com">link</a>aaa<span></span>bbb</p>

However, when the source language is gfm, they are escaped:

<p>aaabbb</p>
<p>aaa<span></span>bbb</p>
<p><a href="https://baidu.com">link</a>aaabbb</p>
<p><a
href="https://baidu.com">link</a>aaa&lt;span&gt;&lt;/span&gt;bbb</p>

I have read the specs and couldn't find any difference for links & raw HTML. Is this a bug in Pandoc?

[jgm]

Here's what I'm seeing (latest pandoc release):

% pandoc -f gfm
<p><a href="https://baidu.com">link</a>aaa<span></span>bbb</p>
<p><a href="https://baidu.com">link</a>aaa<span></span>bbb</p>

That looks fine! What version of pandoc are you using?

[TripleCamera]

I am using the latest version, 3.1.11.1. I also tried demos on the official website.

C:\Users\EricQiu>pandoc -f gfm -t html
aaabbb

aaa<span></span>bbb

[link](https://baidu.com)aaabbb

[link](https://baidu.com)aaa<span></span>bbb
^Z
<p>aaabbb</p>
<p>aaa<span></span>bbb</p>
<p><a href="https://baidu.com">link</a>aaabbb</p>
<p><a
href="https://baidu.com">link</a>aaa&lt;span&gt;&lt;/span&gt;bbb</p>

C:\Users\EricQiu>pandoc -v
pandoc 3.1.11.1
Features: +server +lua
Scripting engine: Lua 5.4
User data directory: C:\Users\EricQiu\AppData\Roaming\pandoc
Copyright (C) 2006-2023 John MacFarlane. Web: https://pandoc.org
This is free software; see the source for copying conditions. There is no
warranty, not even for merchantability or fitness for a particular purpose.

[jgm]

Odd. This is what I get with the same input and pandoc version:

% pandoc
aaabbb

aaa<span></span>bbb

[link](https://baidu.com)aaabbb

[link](https://baidu.com)aaa<span></span>bbb
^D
<p>aaabbb</p>
<p>aaa<span></span>bbb</p>
<p><a href="https://baidu.com">link</a>aaabbb</p>
<p><a href="https://baidu.com">link</a>aaa<span></span>bbb</p>

However, I can reproduce it in try pandoc

My current guess is that this has to do with line endings. (Web forms and windows use CR+LF, whereas my setup is LF.) I'll create a bug report based on this.

[jgm]

See #9416 jgm/commonmark-hs#147