> > Problem with pg_trgm is, it uses isascii() etc. to recognize a letter,
> > which will skip any non ASCII range character in C locale.
> 
> The only place I see that is in those ISPRINTABLE macros, which are only
> used in show_trgm(), which is just a debugging function.  It could stand
> to be improved but it doesn't seem exactly critical.

Really?

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.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp

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