HTML reader and HTML writer out of sync on tasks

[RobTrew]

Problem

In the case of task list items, the HTML reader fails to parse the output of the HTML writer.

- [ ] and - [x] prefixes are read from markdown to native:

• [Plain [Str "\9744", Space ...
• [Plain [Str "\9746", Space ...

respectively.

The HTML writer renders these successfully in the pattern:

<li><label><input type="checkbox" />an unchecked item</label></li>
<li><label><input type="checkbox" checked="" />a checked

but the HTML reader fails to recognise that <label> pattern, and loses the task status, interpreting such lines as plain unadorned <li>.

For an HTML -> Native -> Markdown return to - [ ] and - [x] the HTML reader only recognises direct use of the Unicode Ballot Box and Ballot Box with X pattern:

<li>&#9744; an unchecked item</li>
<li>&#9746; a checked item</li>

It looks as if the HTML reader has not yet caught up with the HTML writer, and doesn't yet understand its task item output.

Pandoc version
Pandoc 3.1.6.2
macOS 13.5.1

[jgm]

Yes, there were changes in the writer's output, and the reader should be updated to interpret this.