[Issue 18532] Hex literals produce invalid strings

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18532

--- Comment #3 from FeepingCreature <default_357-line at yahoo.de> ---
It has to, because it returns string and string is defined to be UTF-8.

If it wants to return something that is not UTF-8, it should return ubyte[],
and you should have to cast it to string explicitly.

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