Marvin Glker wrote in post #1064597:
> I”Ēve written a Lua scanner for CodeRay, but the pull request still isn”Ēt
> approved. https://github.com/rubychan/coderay/pull/22

I submitted scanners for AVR Assembler and VHDL a few years ago, but they haven't been included. And unfortunately they aren't compatible with the current version anymore, so they probably have to be rewritten.