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Subject:	Re: Bug in collation functions?
To:	cygwin AT cygwin DOT com
References:	<56321815 DOT 7000203 AT cornell DOT edu> <20151029153516 DOT GJ5319 AT calimero DOT vinschen DOT de> <56323F2E DOT 4030807 AT cornell DOT edu> <56324598 DOT 9060604 AT cornell DOT edu> <56324E82 DOT 7000402 AT redhat DOT com> <563268A4 DOT 6000005 AT cornell DOT edu> <56329462 DOT 2090206 AT cornell DOT edu> <56329BE8 DOT 808 AT cornell DOT edu> <20151030120320 DOT GO5319 AT calimero DOT vinschen DOT de> <56337996 DOT 2000400 AT cornell DOT edu> <20151030191440 DOT GP5319 AT calimero DOT vinschen DOT de>
From:	Ken Brown <kbrown AT cornell DOT edu>
Message-ID:	<5633F8A0.50107@cornell.edu>
Date:	Fri, 30 Oct 2015 19:09:20 -0400
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On 10/30/2015 3:14 PM, Corinna Vinschen wrote:
> On Oct 30 10:07, Ken Brown wrote:
>> What about the other issue I raised: Should setlocale return null to
>> indicate an error if it's given an invalid locale name like en_DE.UTF-8?
>
> Huh.  Interesting.  You're runing Windows10, right?

Yes

>  After some digging
> it turns out there's a bug in W10.  LocaleNameToLCID() does *not* fail
> and return with an error if it doesn't know a locale.  That would be too
> simple I guess.  Rather, it returns a value LOCALE_CUSTOM_UNSPECIFIED,
> 0x1000.  So all unknown locales are now treated as custom locale.  Duh!
> I fear the answer when trying to report this.  Probably it's a feature...
>
> I applied a patch to workaround this feature.

Confirmed.  Thanks.

Ken

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