What happened to the bootstrap theme?!

Now that is what happens when you use jinjify wrong

now please fix the bootstrap theme (restore it to the way it is on master and patch for katex)

Also, you can now just type scripts/jinjify.py and it will do all the thinking for you.

done. This works for delimited math like using $$foo+bar$$ directly but doesn't pick up :math:'foo+bar' or the math directive, that needs extra thinking.

We might need some special config for the auto-render plugin.

Now it works for math role but not for math directive for reasons I don't know.
Also, it has to iterate over all elements with math class, so base is broken because it has no JQuery and my JS sucks

Your hacky patch is unnecessary. All we need to do is change the delimiters for auto-render. (also, you forgot the CSS)

For example:

<script>
renderMathInElement(document.body, {delimiters: [
  {left: "\\begin{equation*}", right: "\\end{equation*}", display: true},
  {left: "\\[", right: "\\]", display: true},
  {left: "\\(", right: "\\)", display: false}
]})
</script>

We should make those configurable via the config file, because some weird people really want dollars (deprecated and error-prone) as delimiters. We also need $latex…$ for WordPress.com converts.

I’ll work on this.

This should be quite functional now, and KaTeX is now fully bundled — an empty site grew from 2.5 MB to 3.8 MB) We still have a few references we might want to change.

We might also want to restore mathjax.js (without actually including it anywhere) for compatibility with old themes — @ralsina, any opinions?

cc @damianavila — do you know of any problems, other than having to upgrade all custom themes?

cc @damianavila — do you know of any problems, other than having to upgrade all custom themes?

Not sure, I did not play with katex before, the notebook uses Mathjax so maybe there is some degree of incompatibility... if there is a possibility, I would leave the mathjax support, at least, as an option...

Please don't make KaTeX the default. It has limited math support compared to mathjax (see KaTeX/KaTeX#43).

This won't happen because of KaTeX limitations.

It would be great to add KaTeX support, but make it an option alongside MathJax, and do it in a way that doesn't change existing sites unless you explicitly add something to conf.py (I don't personally care about the defaults for new sites).

It’s not easy to juggle two different systems. You can always add KaTeX to your own site via BODY_END and not using the mathjax tags.

It's worth to note that limitations in KaTeX are slowly vanishing. For instance v0.4.0 (released over a month ago):

Added support for some \begin/\end environments, including support for array, matrix, pmatrix, bmatrix, vmatrix, and Vmatrix

and v0.5.0 (released a week ago):

Add the cases and Bmatrix environments.

One day it may become good enough for becoming a default engine for math input in Nikola.

When that happens (and someone tells us about it!), we’ll happily include it. We are not qualified to tell it’s good or not…

Also, feature list: https://github.com/Khan/KaTeX/wiki/Function-Support-in-KaTeX