Use CHTML mathjax backend by default

Use CHTML mathjax backend by default

[Carlos Pita]

Hi all,

I was having some problems with the mathjax HTML-CSS backend and I
found out that the CHTML backend is currently the preferred one. See
details at https://github.com/mathjax/MathJax/issues/2132 and
http://docs.mathjax.org/en/latest/output.html. Changing the backend to
CHTML fixed my issue.

Wouldn't be time to update the default mathjax version to 2.7.1 (the
current one) and setting the backend to CHTML?

Best regards
--
Carlos

Re: Use CHTML mathjax backend by default

[Carlos Pita]

TL;DR about the specific problem I was having with HTML-CSS:

> both HTML-CSS and CommonHTML use web fonts. But CommonHTML doesn't try to detect their presence, while HTML-CSS does, and it is that detection that is probably going wrong for some reason (I did say it was fragile). HTML-CSS needed to wait for the fonts to arrive because (in the old days before browsers were more consistent with each other), MathJax had to measure the actual displayed subexpressions in order to determine their size, and that meant the font had to be the right one. CommonHTML doesn't have to do that because modern browsers are more consistent about their layout (thanks to better standards and better adherence to them).

Re: Use CHTML mathjax backend by default

[Carlos Pita]

Also, they said there:

> I think you'll find that CommonHTML is faster at rendering the math

So:

1. Recommended for newer mathjax versions.
2. Fixed my problem with web fonts.
3. Faster.

It seems like a Pareto improvement to me.