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MathJax feature request on GitLab
How To Add MathJax rendering support to GitLab
Another how-to on integrating MathJax with GitLab
After configuring, making sure to restart GitLab with sudo gitlab-ctl restart.
The above link claims:
By default, gitlab has the (annoying) feature of using carrot as a superscript. This breaks mathjax for ever equation with a superscript, so to turn it off in the file app/helpers/gitlab_markdown_helper.rb. Simply set superscript to false.
However, there is no mention of superscripting in this file:
gitlab/embedded/service/gitlab-rails/app/helpers/gitlab_markdown_helper.rb
or in the GitLab Flavored Markdown Reference
…but it DOES end up causing problems! You do have to turn off subscripting, but now Redcarpet (Ruby Markdown parser) is called through Banzai and the edits must be made here:
gitlab/embedded/service/gitlab-rails/lib/banzai/filter/markdown_filter.rb
More discussions of LaTeX support on GitLab, including pitches for KaTeX