Обсуждение: BUG #4451: initcap() function capitalizes incorrectly
The following bug has been logged online: Bug reference: 4451 Logged by: Scott V Email address: datagenic@gmail.com PostgreSQL version: 8.3.1 Operating system: Mac OS X 10.5.4 Description: initcap() function capitalizes incorrectly Details: initcap() capitalizes incorrectly when passing strings containing certain two-byte UTF-8 characters. E.g., when argument = 'mÄtÅ«rÄte', initcap returns 'MÄTÅ«RÄTe'. Correct result should be 'MÄtÅ«rÄte'. The function appears to be incorrectly interpreting the two-byte chars as non-alphamueric characters. They are in fact alphanumerics, they just have diacritical markings.
Scott V wrote: > The following bug has been logged online: > > Bug reference: 4451 > Logged by: Scott V > Email address: datagenic@gmail.com > PostgreSQL version: 8.3.1 > Operating system: Mac OS X 10.5.4 > Description: initcap() function capitalizes incorrectly > Details: > > initcap() capitalizes incorrectly when passing strings containing certain > two-byte UTF-8 characters. E.g., when argument = 'mÄtÅ«rÄte', initcap > returns 'MÄTÅ«RÄTe'. Correct result should be 'MÄtÅ«rÄte'. > > The function appears to be incorrectly interpreting the two-byte chars as > non-alphamueric characters. They are in fact alphanumerics, they just have > diacritical markings. What's your setting for lc_collate? //Magnus
Magnus Hagander <magnus@hagander.net> writes: > Scott V wrote: >> PostgreSQL version: 8.3.1 >> Operating system: Mac OS X 10.5.4 >> initcap() capitalizes incorrectly when passing strings containing certain >> two-byte UTF-8 characters. E.g., when argument = 'mÄtÅ«rÄte', initcap >> returns 'MÄTÅ«RÄTe'. Correct result should be 'MÄtÅ«rÄte'. > What's your setting for lc_collate? I think actually it's lc_ctype that determines case-folding. But the current theory is that Apple's locale support is simply broken for UTF-8: http://archives.postgresql.org/pgsql-general/2008-02/msg01072.php which means that even if Scott had all his settings right, it wouldn't work :-( A quick test on OS X here seems to confirm this. regards, tom lane
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Scott Vanderbilt wrote: > Note sure what the correct settings should be, but output from SHOW > ALL in psql says: > > lc_collate C > lc_ctype C There's a chapter on locale support in the user manual: http://www.postgresql.org/docs/8.3/interactive/locale.html The right setting depends on what language's collation rules you want to follow. "locale -a" in a shell should list the available options. -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com