[Issue 12324] std.uni.Grapheme / byGrapheme can't search for decomposed form

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=12324

--- Comment #1 from Dmitry Olshansky <dmitry.olsh at gmail.com> ---
Normalization is the answer here.
Should I do it on grapheme construction? I don't think so.

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