Well, we ended up using quill.js in our own system (it's rad, and pretty easy to wire into an operational transform system to handle concurrent edits). But at least at the time we were looking, discourse was markdown only.
We had a lot of needs that weren't met by other FOSS platforms, so it wasn't just rich text, but rich text was a big driver there.
We had a lot of needs that weren't met by other FOSS platforms, so it wasn't just rich text, but rich text was a big driver there.