Обсуждение: pgsql: Teach regex_fixed_prefix() the correct handling of advanced regex

Log Message:
-----------
Teach regex_fixed_prefix() the correct handling of advanced regex
escapes --- they aren't simply quoted characters.  Problem noted by
Antti Salmela.  Also fix problem with incorrect handling of multibyte
characters when followed by a quantifier.

Modified Files:
--------------
    pgsql/src/backend/utils/adt:
        selfuncs.c (r1.167 -> r1.168)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/selfuncs.c.diff?r1=1.167&r2=1.168)