Include C headers in D code

I didn't know about that, thanks for sharing.

Awesome, this is exactly how I wish all 'better C' languages would allow C interop instead of going through separate binding-generator tools. The C (not C++) language itself is simple enough that at least a struct/function declarations parser shouldn't add too much code to any compiler (even if not using LLVM for this).

The best solution would be to also allow directly referencing .c implementation files from D source, for separate compilation and linking with the D program. Nim does allow something like this: https://github.com/floooh/sokol-nim/blob/master/sokol/gfx.ni..., but I guess since Nim compiles to C this is much easier to achieve :)

Because then I'd have to write a C parser that works at D compile-time. I'd much rather use libclang and know that what I get was parsed correctly. _Especially_ when I start doing C++.