> Thoughts (other than 'don't be so lazy')?
Have you looked at PiL (https://www.lua.org/pil/25.3.html)?
Yes, thank you. I noted that it calls an error function but the closest I could find was luaL_error.
I also *just* found luaL_pushfstring. Perhaps I'll adapt call_va to use luaL_pushfstring.
Thanks Roberto (and Sean!)