I’m hoping to read some C code (XPM image files) using Common Lisp, and I am thinking that it would help to equip the Lisp parser to skip over C-style comments (primarily /* ... */ comments, maybe also //, not sure if that’s necessary yet).

Can anyone say how to define a readtable which skips over C-style comments? A web search didn’t bring up anything from what I can tell.

I only need to read the C code, so it’s acceptable that skipping C-style comments makes it impossible to read some valid Common Lisp constructs.