@Sil Thanks for that anyway, otherwise I would be just playing with myself...

BTW. MathJax v3 is coming out, I am thinking to update the current render library A0 is using. This will give a better search experience since it takes too much time to be rendered for a page of search results currently. I feel v3 is much more faster than previous version. Although KaTeX is also fast, I found it cannot handle many content as robust as MathJax when I was choosing between them as A0 search result render library.

But given I have to deal with some other tasks recently, I may defer the update to next a few weeks.

But if anyone wants to offer help on this, I am willing to send an invitation for the private repository.