I've built a lua-based markdown which is more sane (from a programmer's PoV) than markdown but still concise

https://github.com/civboot/civlua/tree/main/cxt

I'm planning on supporting syntax highlighting. I could imagine creating a cxx that does what LuaX is doing, except it would support rendering to the command line as well as html.

Want to team up?

FWIW the textadept lexer can return everything well defined and supports everything, the rest is just styling.