pgsql: Adjust regex for test with opening parenthesis in character clas - Mailing list pgsql-committers

Adjust regex for test with opening parenthesis in character classes

As written, the test was throwing an error because of an unbalanced
parenthesis.  The regex used in the test is adjusted to not fail and to
test the case of an opening parenthesis in a character class after some
nested square brackets.

Oversight in d46911e584d4.

Discussion: https://postgr.es/m/16ab039d1af455652bdf4173402ddda145f2c73b.camel@cybertec.at

Branch
------
REL_16_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/52d08620e48c0c24d1d69179c88e49f9223f309d

Modified Files
--------------
src/test/regress/expected/strings.out | 9 +++++++--
src/test/regress/sql/strings.sql      | 2 +-
2 files changed, 8 insertions(+), 3 deletions(-)