Is it intentional that `__FILE_FULL_PATH__` is **not** normalized?

[Ilya]

Hey everyone,

I've already asked this on the PR that added `__FILE_FULL_PATH__` 
(see 
https://github.com/dlang/dmd/pull/5959#issuecomment-2423255282) 
but there is no reply probably because that PR is long merged.

So, I'd like to repeat my question here: Is that intentional that 
the returned path is not normalized?

Our code base tends to use `__FILE_FULL_PATH__` as a template 
argument, now I'm trying to split the compilation and let's say I 
compile `lib/*.d` separately and then compile `bin/*.d` passing 
`-I../lib` flag to find imports. The resulting object files can't 
be linked, because template arguments are 
`project_dir/lib/module.d` in one object file but 
`project_dir/bin/../lib/module.d` in another.

Of course, this could be solved by changing the build to never 
use `..` (or `.`) in the paths passed to the compiler (or use 
them consistently everywhere)... Or by replacing 
`__FILE_FULL_PATH__` with 
`__FILE_FULL_PATH__.buildNormalizedPath` everywhere (well, 
doesn't even have to be everywhere, just everything that might 
end up in templates' arguments).

But I wonder, shouldn't `__FILE_FULL_PATH__` be normalized in the 
first place?