Sanitize possible html-breaking code and output before passing through pygments

[hdamron17]

No description provided.

[jyn514]

I think we should do this after pygments, right? since pygments outputs html, it probably does most of the escaping for us. We should check the docs on that.

Also, plain text is rendered as HTML, which messes up formatting. We should fix that. This was a seperate issue caused by the file extension not being recognized

[hdamron17]

It would need to be before pygments since the pygments output we want to be real html. But escaping before pygments may mess with the pygments parser so that may cause an issue. There is also an option possibly that there is a flask plugin to do pygments highlighting for us. It may help with this issue but it also ties us down to pygments more than we are currently.

[jyn514]

Can you give an example of this issue? I haven't seen this happen.