> peimp=> select 'winoujcie' ~* '\mwinoujcie\M';
> (1 row)
Oh, I see the reason for this: the code in cclass() in regc_locale.c
doesn't go further up than U+00FF, so no codes above that will be
thought to be letters (or members of any other character class).
Clearly we need to go further when we are dealing with UTF8.
I'm not sure what a sane limit would be though.
(It would be nice if there were a more efficient way to get this
information than laboriously iterating through all the possible
character codes. It doesn't look like we're even trying to cache
the results, ick.)
regards, tom lane
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