pgsql: Back-patch fix for extraction of fixed prefixes from regular exp - Mailing list pgsql-committers

Back-patch fix for extraction of fixed prefixes from regular expressions.

Back-patch of commits 628cbb50ba80c83917b07a7609ddec12cda172d0 and
c6aae3042be5249e672b731ebeb21875b5343010.  This has been broken since
7.3, so back-patch to all supported branches.

Branch
------
REL8_4_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/b9edaa784e407d1b6e890b776c607a26f3aa7e49

Modified Files
--------------
src/backend/regex/Makefile       |    2 +-
src/backend/regex/regc_color.c   |   11 ++-
src/backend/regex/regc_nfa.c     |   34 +++---
src/backend/regex/regcomp.c      |    2 +-
src/backend/regex/rege_dfa.c     |   11 +-
src/backend/regex/regprefix.c    |  256 ++++++++++++++++++++++++++++++++++++++
src/backend/utils/adt/regexp.c   |   65 ++++++++++
src/backend/utils/adt/selfuncs.c |  204 ++++++------------------------
src/include/regex/regex.h        |    4 +
src/include/regex/regguts.h      |   30 ++++--
src/include/utils/builtins.h     |    2 +
11 files changed, 421 insertions(+), 200 deletions(-)