Blank likes before and after LaTeX equation displays

[madsmh]

Pandoc seems to insert a blank line before \[ and one after \] Is there some way to turn off this behavior?

[jgm]

No. But it is semantically insignificant.

[jgm]

Yes, there are several cases there, but the only one that matters for a RawBlock is the one for RawBlock (quoted above).
We do have to add blank lines in some cases, e.g. after paragraphs.

[jgm]

I think the reason I never merged this is mostly worry that it will break things that work currently.
Anyone who is relying on that blank line being inserted may start to have bad results. That's not a conclusive reason not to make the change, but it's the source of my hesitation.

[madsmh]

Ah, I see.

In any case, I tried building at commit d4ecd2e but it made no difference when using the python I wrote.

[jgm]

You're right. Simple test:

% pandoc -f native -t latex
[Para [Str "a"],
 RawBlock (Format "latex") "\\[x\\]",
 Para [Str "b"]
]
^D
a

\[x\]

b

The reason is that my code ensures that a Para is surrounded by blanks. So the change doesn't do much good in this case. We do, in general, want to ensure that a Para is surrounded by blanks, so I'm not quite sure what to suggest.

I have already proposed a couple of workarounds that should work for you.

[jgm]

What the issue7111 branch change will allow is e.g. putting two RawBlocks with minipage right next to each other without a blank line, which was the original motivation for #7111 I believe.

[madsmh]

Applying this to Pandoc's output did the trick

def post_process(data):
            data = re.sub(r"\s+\\\[\s+\\begin{tikzcd}", r"\n\\[\n\\begin{tikzcd}", data)
            data = re.sub(r"\\end{tikzcd}\s+\\]\s+", r"\\end{tikzcd}\n\\]\n", data)
            return data