[Mono-bugs] [Bug 480152] string.Normalize() frequently produces incorrect output

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http://bugzilla.novell.com/show_bug.cgi?id=480152

http://bugzilla.novell.com/show_bug.cgi?id=480152#c26


--- Comment #26 from Damien Diederen <dd at crosstwine.com> 2010-04-17 23:42:18 UTC ---
Created an attachment (id=355156)
 --> (http://bugzilla.novell.com/attachment.cgi?id=355156)
Normalization: Recursively apply the Unicode decomposition mapping

This patch fixes the incorrect results reported by David.

http://www.unicode.org/reports/tr15/tr15-31.html, section 1.3:

"To transform a Unicode string into a given Unicode Normalization Form,
 the first step is to fully decompose the string. [...] Full
 decomposition involves recursive application of the Decomposition_Mapping
 values, because in some cases a complex composite character may have a
 Decomposition_Mapping into a sequence of characters, one of which may
 also have its own non-trivial Decomposition_Mapping value."

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