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Date: Thu, 29 Oct 2015 08:50:50 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Bug in collation functions?
Message-ID: <20151029075050.GE5319@calimero.vinschen.de>
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On Oct 28 21:58, Eric Blake wrote:
> On 10/28/2015 04:14 PM, Ken Brown wrote:
> > It's my understanding that collation is supposed to take whitespace and
> > punctuation into account in the POSIX locale but not in other locales.
>=20
> Not quite right. It is up to the locale definition whether whitespace
> affects collation.  But you are correct that in the POSIX locale,
> whitespace must not be ignored in collation.
>=20
> > This doesn't seem to be the case on Cygwin.  Here's a test case using
> > wcscoll, but the same problem occurs with strcoll.
>=20
> That's because the locale definitions are different in cygwin than they
> are in glibc.  But it is not a bug in Cygwin; POSIX allows for different
> systems to have different locale definitions while still using the same
> locale name like en_US.UTF-8.

Btw, strcoll and wcscoll in Cygwin are implemented using the Windows
function CompareStringW with the LCID set to the locale matching the
POSIX locale setting.  I'm rather glad I didn't have to implement this
by myself... :}


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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