Table wrapped in div does not roundtrip from html to markdown and back

[Zash]

Contents of test.html:

<div class="foobar">
	<table>
		<tr><th>Foo</th></tr>
		<tr><td>Bar</td></tr>
	</table>
</div>

pandoc test.html -t markdown gives:

::: {.foobar}
  Foo
  -----
  Bar
:::

pandoc test.html -t markdown | pandoc gives:

<p>::: {.foobar} Foo —– Bar :::</p>

$ pandoc -v
pandoc 2.1.3
Compiled with pandoc-types 1.17.4.2, texmath 0.10.1.1, skylighting 0.7.0.2
Default user data directory: /home/zash/.pandoc
Copyright (C) 2006-2018 John MacFarlane
Web:  http://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]

This is because the table parser expects a blank line after the table.
We could fix this in the reader by using a special new parser instead of blanklines. The new parser would be sensitive to the possibility that we're in a fenced div, and look ahead for the closing fence.

Alternatively, we could modify the writer to include a blank line in this context. But I think modifying the reader would make more sense.

[link2xt]

I solved this in Muse reader by passing terminator parser to functions that parse block series. Div parser calls block series parser with terminator parser that expects </div>, list parser uses terminator parser that expects unindented line etc.