Support indicator function

[cnut1648]

Hi,

Is your feature request related to a problem? Please describe.
\mathbb doesn't work for numbers like \mathbb{1}, but there are other packages that support numbers, like \mathbbm{1} or \mathds{1}. I think it would be nice to have indicator function supported by allowing to use mathbbm or mathds.

Link to or name of a (La)TeX package that provides the same feature:
mathbbm or mathds.

Related issue #473

Thank you!

[Firestar-Reimu]

Is it fixed? I still find \mathbb{1} cannot ne rendered as $\mathbb{1}$ (GitHub use Mathjax?)

yzhang-gh/vscode-markdown#1363

[edemaine]

It is not fixed; that is why the issue is still open.

But you're correct that GitHub uses MathJax, not KaTeX, so this issue is irrelevant to GitHub's rendering.