Reconsinder using KaTeX autorenderer

[W4RH4WK]

23eaf2a introduced the use of KaTeX autorenderer and started surrounding math with \( \) and \[ \]. It seems like these markers are needed for the autorenderer, however the KaTeX parser fails when manually invoked on such a marked math element.

My suggestions is that, rather than surrounding math elements and using the autorenderer: do not surround them since there is already a span tag around the elements and invoke the KaTeX render function on them directly.

For clarification, here the span tags:

$ echo '$x^2 + y^2 = z^2$' | pandoc -t html5 --katex
<p><span class="math inline">\(x^2 + y^2 = z^2\)</span></p>

And this is how I invoke KaTeX (at the bottom of my HTML document):

<!-- KaTeX -->
<script src="$TP_DIR$/katex/katex.min.js"></script>
<script>
    var mathElements = document.getElementsByClassName("math");
    for (var i = 0; i < mathElements.length; i++) {
        var texText = mathElements[i].firstChild;
        katex.render(texText.data, mathElements[i]);
    }
</script>

This invocation might not be bullet proof, yet I think it is better than relying on the autorenderer. Typically Pandoc already knows which elements should be rendered using KaTeX, and which should not.

[jgm]

I don't know much about KaTeX, but I agree with the idea here. We've already identified the math, so why let an error-prone script do the parsing?