[Issue 21597] Compiler flag should output a "normalized" file without unittests and comments

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21597

--- Comment #2 from Andrei Alexandrescu <andrei at erdani.com> ---
Yah, ideally normalization would be in some canonical format that is the same
for all styles of coding.

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