Backport #22453
In #22447 it was noticed that display environments were not working
correctly. This was due to the setting displayMode not being set.
Further it was noticed that the error was not being displayed correctly.
This PR fixes both of these issues by forcibly setting the displayMode
setting and corrects an error in displayError.
Fix#22447
Signed-off-by: Andrew Thornton <art27@cantab.net>
This PR adds mathematical rendering with KaTeX.
The first step is to add a Goldmark extension that detects the latex
(and tex) mathematics delimiters.
The second step to make this extension only run if math support is
enabled.
The second step is to then add KaTeX CSS and JS to the head which will
load after the dom is rendered.
Fix#3445
Signed-off-by: Andrew Thornton <art27@cantab.net>
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
