[cryptonector]

I don't know what the title was when you commented, but what I see is "Compiler using Lisp’s macro system for metaprogramming C-like languages". That doesn't imply transpiling from Common Lisp (though it does impli transpiling), and it seems like a very pithy description of what C-Mera actually does (which is also what you said in your first sentence).

The nice thing about this is that you get the full power of Lisp macros, which is where the metaprogramming comes in, but it still resembles C well enough.

Of course, the Lisp compiler can't actually do C type checking in this system, so you still need to map C compiler errors and warnings back to the source -- that may well turn out to be a pain (and almost certainly does).

EDIT: I'm curious: why the downvote?