ImportC has improved macro support

[user1234]

On Wednesday, 6 December 2023 at 20:26:38 UTC, Walter Bright 
wrote:
> The interesting thing here is `expression` does not need to be 
> translated to D. It's still a C expression, and has C 
> semantics. D templates with C semantics just falls out of the 
> way ImportC was implemented.

Indeed, I've seen that the other day, the 
[PR](https://github.com/dlang/dmd/pull/15871/files) only modifies 
the parser.