I think ProseMirror potentially solves a similar problem, but is more efficient: https://prosemirror.net/examples/markdown/ https://prosemirror.net/examples/mar

I think ProseMirror potentially solves a similar problem, but is more efficient: https://prosemirror.net/examples/markdown/ https://prosemirror.net/examples/markdown/ (then click the WYSIWYM radio button). ProseMirror's API became stable a few months ago; I recently read straight through the documentation and was very, very impressed (I'm a huge fan of the author marijnh's contributions to open source, and want to integrate ProseMirror into CoCalc and Jupyter notebooks soon). ProseMirror is of course very low level though...