LaTeX in markdown document

[PierreMarchand20]

There is an issue about code fences #242, but I was wondering if it was possible to support latex/math environnement in markdown out of the box ?

I know that the extension has great support for LaTeX Workshop without any configuration needed, so I was wondering if it was possible to do the same for markdown (and more especially this extension, related to this issue).

I know that I can use some regex to just ignore every math environnement, but I think we could do something with the need of user-defined setting, and may be better than just ignoring everything.

[Jason3S]

@PierreMarchand20 thank you for bringing this up. I hope to have better support in the future for embedded languages.

For the moment, I will look at a way to exclude them. Do you have any examples of its usage in markdown?

[PierreMarchand20]

I am using the extension Markdown All in One to take notes when I am attending presentations. I am a phd in applied mathematics, so there are lots of equations, notations, greek letters, etc. Here's a small example:

# Low regularity Cauchy problem in general relativity on characteristic hypersurfaces by Olivier Graf

## Einstein equation

$(\mathcal{M},\overline{g})$ a quadratic form symmetric (-+++) where $\mathcal{M}\simeq \mathbb{R}_t\times \mathbb{R}_x^3$ and $\overline{g}=(\overline{g}_{\mu,\nu}(t,x))$. This is to be the gravitational potential

Einstein equation:
$$
[\operatorname{Ric}(\overline{g})]_{\mu,\nu}- \dfrac{1}{2} \operatorname{R}(\overline{g})\overline{g}_{\mu,\nu}= \mathrm{T}_{\mu,\nu} \qquad(EE)
$$

- $\mathrm{T}_{\mu,\nu}=0$ (vacuum)
- $\operatorname{Ric}(\overline{g})_{\mu,\nu}=\sum_{\alpha,\beta,\gamma,\delta}\overline{g}_{\alpha,\beta}\partial^2\overline{g}_{\delta,\gamma}+\sum \overline{g}_{\alpha,\beta} \partial g \partial g$ where $\partial=\partial_t,\partial_x,,\partial_y,\partial_z$
-> 10 equations

Actually, I do not see when spell check in latex environments for markdown documents could be useful. So may be, we could at least exclude them by default ?

[gauss256]

I'd like this too. I can disable single-line expressions (like $e=mc^2$) with an exclusion reg exp \$.*\$, but that doesn't help with multiline expressions.

[gauss256]

I've solved it by using the right regular expression exclusions. The following will exclude spell checking inside code blocks and LaTeX, whether inline or multiline. This goes into settings.json.

"cSpell.languageSettings": [
    {
      // use with Markdown files
      "languageId": "markdown",
      // Exclude code, LaTeX
      "ignoreRegExpList": [
        "\\$.*\\$",
        "\\$\\$([\\n\\(\\)]|[^(\\$\\$)])*\\$\\$",
        "`.*`",
        "```([\\n\\(\\)]|[^(\\$\\$)])*```",
      ]
    }
  ]