GitHub now supports LaTeX in three-tick code block syntax ```math

[fasiha]

GitHub recently(?) began rendering content inside ```math code blocks as LaTeX equations, that is,

```math
x = 1
``\

get rendered the same way as

$$x = 1$$

Example:

$$x = 1$$

However it appears that Pandoc's gfm doesn't handle this. I'm trying pandoc -f gfm+tex_math_dollars --mathjax -s -t html5 -i issue.md -o issue.html and the code block syntax is rendered in HTML as a plain code block.

I am experimenting with ```math syntax because GitHub won't typeset LaTeX inside double-dollar notation if it spans multiple lines. For example, below is GitHub's rendering of the following:

$$
  x =
  2
$$
vs
```math
  x =
  3
``\

$$
x =
2
$$
vs

$$x = 3$$

As you can see, it butchers the double-dollar multi-line equation but ```math is fine.

I know the risks of breaking with established patterns (like double-dollar signs, beautifully supported by LaTeX and Pandoc and many other tools for decades now) for syntax unilaterally introduced by Microsoft, which is why I am only tentatively experimenting with it.

A thousand apologies if this has been discussed before but I couldn't find it.

[jgm]

It's unfortunate that their implementation of $$ math has this limitation.

We can consider adding this, but in the mean time you can easy handle this with a short Lua filter that matches a CodeBlock with class math and replaces it with Para [Math DisplayMath ((contents))].

[jgm]

Folding this into #9121 which also has the new inline math format.

[jgm]

$$ x = 2 $$

vs

$$x = 3$$

[jgm]

Interestingly, adding a newline after the closing $$ makes it work.