Joseph, could you confirm that comments 2 (in general) allows for only plain text? If that's the case, isn't it a bit limited?
I had not noticed, but yes I confirm that whereas it was possible to use the HTML editor to write Glossary comments in moodle 1.9 it is no longer possible in moodle 2.
However, it is still possible to put in HTML tags, see attached screenshot.
I have no idea why that decision was made.
I was wondering about this as well. I went into the comments/lib.php file and saw that it was creating a standard text area.
What would be the code to call an actual text editor here instead? (I cannot simply add an editor element, since this isn't an $mform).
I've never taken a look at moodle 1.9, so I'm not sure how they did that...
Adding an editor may not be too difficult (See e.g. editor implementation in the database module) but editor with file manager may be a bit tricky. Afaict the current implementation of the core comment component doesn't support system files. But it may be possible to add such support and also override the core comment display method in a plugin level. Incidentally, this is in my todo list but with all the other things in that list it may take a while until I get to that. If you take a shot at it I'd appreciate any insights.