[Issue 11997] rdmd should search it's binary path for the compiler

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=11997

--- Comment #1 from Joakim <dbugz at joakim.fea.st> ---
Just ran into this now that ldc is starting to ship rdmd with the 1.3 beta2
release.  What's weird is even if I add dmd's path from the unpacked zip to my
PATH, rdmd can't find it, though I can call dmd just fine.  rdmd only works
without --compiler if dmd is installed in the system path.

I can submit a PR so that rdmd always prepends its path to the defaultCompiler,
so that the one next to it is the one tried.  Let me know if you like that
solution.

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