markdown-it-texmath

There are many approaches to this problem. E.g., Jupyter notebooks implement one that has matured in the wild over a decade. There's this very flexible markdown-it plugin that implements anther https://github.com/goessner/markdown-it-texmath, and my version of it here https://github.com/sagemathinc/cocalc/blob/master/src/packag... which I rewrote in typescript with a focus on the same semantics as Jupyter has, but for CoCalc. I've also been working on using unifiedjs to provide more general latex for Markdown (not just formulas) here https://github.com/sagemathinc/cocalc/pull/5982 Parsing math in markdown is easier if you use a plugin to an existing markdown parser, rather than trying to do some hack outside of that (which is what Github probably does, and also what Jupyter does).

If you use a proper markdown plugin to parse math instead (such as https://github.com/goessner/markdown-it-texmath), then the problems pointed out in this blog post go away.

> Use Katex This does use KaTeX for rendering the TeX: > Math support is the core functionality of mdmath. Inline math $r = \sqrt{x^2 + y^2}$ and display math expressions $$e^{ix}=\cos x + i\sin x$$ are supported, due to markdown-it extension markdown-it-texmath [8] and the fast math renderer KaTeX [9]. > [8] markdown-it-texmath, (https://github.com/goessner/markdown-it-texmath). > [9] KaTeX, (https://katex.org/)