MathJax extensions can't be enabled

[SV-97]

Description

I wanted to enable a mathjax extension (ams) due to running into a problem with unknown commands (\substack and \mathclap) however this currently seems to be impossible. In particular the runtime import mechanism provided by MathJax in the form of \require does not work. (I also tried LaTeX's default \usepackage which usually works with mathjax and ran into the same problems).

Reproducing the error

Linear program: {
  formula: |latex
    \\min_{ \\mathclap{\\substack{ x \\in \\mathbb{R}^n \\ x \geq 0 \\ Ax \leq b }}} c^T x
  |
}

yields Undefined control sequence \substack.

Linear program: {
  formula: |latex
    \\require(ams)
    \\min_{ \\mathclap{\\substack{ x \\in \\mathbb{R}^n \\ x \geq 0 \\ Ax \leq b }}} c^T x
  |
}

yields Undefined control sequence \require.

[alixander]

In particular the runtime import mechanism provided by MathJax in the form of \require does not work.

Right, D2 packages Mathjax at compile-time, so the extensions cannot be dynamically imported.

I'll make a note of this in the docs. In the meantime, ASM looks useful, I included it and used your equation as a test: #1544

@SV-97

[SV-97]

Thanks for the quick fix! I just noticed that my example was a bit off as the \\s inside the substack should've really been \\\\s so that it renders something like this:

Although I guess the other variant also works as a basic test.