Locale support for postgresql regex (src)

Hi,

I modified two files in postgresql-7.1.3/src/backend/regex/ and in
postgresql-7.1.3/src/include/regex/
so 'character class' (eg. [[:alnum:]], [[:alpha:]], etc.) now should
support 'locale' settings.

http://galaxy.metacerca.it/~anto/pgslq_7_1_3_regex_locale.tar.gz (~14
KB, 2 files)

It is not a great work and do not support multibyte, but, for me, is
sufficient to isolate, for example, an italian word containing ascii
char > 127.
For example: select T from tab where T ~*
'(^|[^[:alnum:]]+)citt[[:alnum:]]*([^[:alnum:]]+|$)';
now match the word 'città' in a string like 'vado in città', 'città'
etc..

PS: excuse my poor english

Regards
Antonello

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