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b5f9b0241a
is_unicode_equiv compares two UTF-32 values and returns 1 if
both are member of the same Unicode equivalence class, 0 otherwise.
Note that this function only works with precomposed characters
per Unicode normalization form C. It doesn't handle decomposed
characters, just like its counterpart in glibc. I.e., equivalence
class comparison using decomposed chars won't work. Example:
fnmatch("[=n=]", "ñ") == 0
fnmatch("[=ñ=]", "n") == 0
but
fnmatch("[=n=]", "n\x0303") == 1
fnmatch("[=n\x0303=]", "n") == 1
fnmatch("[=n\x0303=]", "n\x0303") == 1
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>