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Re: pg_trgm

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Tatsuo Ishii <ishii@postgresql.org>
Cc: robertmhaas@gmail.com, peter_e@gmx.net, ishii@sraoss.co.jp, andres@anarazel.de, pgsql-hackers@postgresql.org, teodor@sigaev.ru
Date: 2010-05-28T00:44:36Z
Lists: pgsql-hackers 
Tatsuo Ishii <ishii@postgresql.org> writes:
> similarity -> generate_trgm -> find_word -> iswordchr -> t_isalpha -> isalpha

> if locale is C and USE_WIDE_UPPER_LOWER defined which is the case in
> most modern OSs.

Quite.  And *if locale is C then only standard ASCII letters are letters*.
You may not like that but it's not wrong; in fact any other behavior
would be wrong.

			regards, tom lane