Inline formatting can't cross line boundaries in line blocks.

[van-de-bugger]

Pandoc documentation allows inline formatting in line blocks:

Inline formatting (such as emphasis) is allowed in the content, but not block-level formatting (such as block quotes or lists).

However, it seems inline formatting can't cross line boundaries. Consider an example:

$ cat test.md
*In normal paragraphs
emphasis works for
entire paragraph.*

| *But in line blocks
| emphasis doesn't work
| for entire block.*

| *Each line*
| *must be emphasized*
| *separately.*

$ pandoc -f markdown -t html5 ./test.md 
<p><em>In normal paragraphs emphasis works for entire
paragraph.</em></p>
<div class="line-block">*But in line blocks<br />
emphasis doesn’t work<br />
for entire block.*</div>
<div class="line-block"><em>Each line</em><br />
<em>must be emphasized</em><br />
<em>separately.</em></div>

In the first line block asterisks are not recognized as emphasis. That's probably not a big issue, but you may want to fix either implementation or documentation.

pandoc 2.19.2
Compiled with pandoc-types 1.22.2.1, texmath 0.12.5.5, skylighting 0.13.2,
citeproc 0.8.1, ipynb 0.2, hslua 2.2.1
Scripting engine: Lua 5.4
Fedora 38 @ x86_64

[jgm]

We represent a lineblock as a list of [Inline] lines, which we need to parse individually, so we can't really have formatting crossing line breaks. We can document this though.