From: | "Vlad Romascanu" <vromascanu(at)accurev(dot)com> |
---|---|
To: | pgsql-bugs(at)postgresql(dot)org |
Subject: | BUG #5743: Regexp engine fails to case-insensitively match multi-byte codepoints |
Date: | 2010-11-04 00:48:39 |
Message-ID: | 201011040048.oA40md61095262@wwwmaster.postgresql.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-bugs |
The following bug has been logged online:
Bug reference: 5743
Logged by: Vlad Romascanu
Email address: vromascanu(at)accurev(dot)com
PostgreSQL version: 8.4.3
Operating system: Windows, Linux
Description: Regexp engine fails to case-insensitively match
multi-byte codepoints
Details:
Already reported in 2006 but seems to have fallen through the cracks (I can
find no followup.) Problem still exists in v8.4.3.
Problem still appears to be pg_wc_tolower downcasting to char before calling
tolower() (instead of calling towlower().)
This one of several inconsistencies unfortunately still present in
case-insensitive regexp vs. LOWER(str) [str_lower] treatment (including char
to wchar conversion using MultiByteToWideChar/mbstowcs vs. char2wchar, or
towlower vs. pg_wc_tolower.)
Current workaround is to use LOWER(str) ~ LOWER('regexp').
From | Date | Subject | |
---|---|---|---|
Next Message | Tom Lane | 2010-11-04 03:52:09 | Re: BUG #5743: Regexp engine fails to case-insensitively match multi-byte codepoints |
Previous Message | Dimitri Fontaine | 2010-11-03 21:36:12 | Re: BUG #5740: contrib/spi/moddatetime.c doesn't work with timezones. |