pg_unicode_fast: fix final sigma logic. If the string is preceded only by Case Ignorable characters, don't consider it to be a final sigma.
In the process, refactor so that the preceding and following characters are found first, and then the rule is applied, to improve clarity. Discussion: https://postgr.es/m/[email protected] Backpatch-through: 18 Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/66ec24276b18d111b916e6189b25e5c0a998a1f2 Modified Files -------------- src/common/unicode_case.c | 88 ++++++++++++++---------------- src/test/regress/expected/collate.utf8.out | 6 ++ src/test/regress/sql/collate.utf8.sql | 1 + 3 files changed, 47 insertions(+), 48 deletions(-)
