[Webkit-unassigned] [Bug 13138] StringImpl::isLower calls |islower| for non-ASCII characters

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Mar 22 16:50:10 PDT 2007


------- Comment #2 from jungshik.shin at gmail.com  2007-03-22 16:50 PDT -------
Different C libraries differ in the way they treat values beyond 0xFF. The man
page of islower on Mac OS 10.4 has the following to say about it. 

     The 4.4BSD extension of accepting arguments outside of the range of the
     unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The iswlower()
     function should be used instead.


Because the code in question is XP, I think we should not try to squeeze out
every bit of performance by being TOO clever, which may lead to a compatibility

There are a couple of other places that use a similar trick in StringImpl.cpp.
I'll upload a patch soon. 

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