Re: russian case-insensitive regexp search not working

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net>
Cc: pgsql-general(at)postgresql(dot)org, alexander lunyov <lan(at)startatom(dot)ru>
Subject: Re: russian case-insensitive regexp search not working
Date: 2007-07-09 13:50:42
Message-ID: 8279.1183989042@sss.pgh.pa.us
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Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net> writes:
> On Mon, Jul 09, 2007 at 04:00:01PM +0400, alexander lunyov wrote:
>> I found this bug report:
>> http://archives.postgresql.org/pgsql-bugs/2006-09/msg00065.php
>>
>> Is it about this issue?
> Yes.

>> And will it be fixed someday?
> Likely. In the meantime lower() can come to the rescue.

It's not nearly as easy to fix as the reporter of that bug imagines,
because we don't know the relationship between pg_wchar representation
and the wchar_t representation assumed by the <wctype.h> functions.

In the short term it should work if you can use a single-byte encoding
(koi8r I suppose) and a locale setting compatible with that.

regards, tom lane

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