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Tom Lane 802308693f Amend recent fix for SIMILAR TO regex conversion. 
Commit e3ffc3e91 fixed the translation of character classes in
SIMILAR TO regular expressions.  Unfortunately the fix broke a corner
case: if there is an escape character right after the opening bracket
(for example in "[\q]"), a closing bracket right after the escape
sequence would not be seen as closing the character class.

There were two more oversights: a backslash or a nested opening bracket
right at the beginning of a character class should remove the special
meaning from any following caret or closing bracket.

This bug suggests that this code needs to be more readable, so also
rename the variables "charclass_depth" and "charclass_start" to
something more meaningful, rewrite an "if" cascade to be more
consistent, and improve the commentary.

Reported-by: Dominique Devienne <ddevienne@gmail.com>
Reported-by: Stephan Springl <springl-psql@bfw-online.de>
Author: Laurenz Albe <laurenz.albe@cybertec.at>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CAFCRh-8NwJd0jq6P=R3qhHyqU7hw0BTor3W0SvUcii24et+zAw@mail.gmail.com
Backpatch-through: 13
2025-09-13 16:55:51 -04:00
..
authentication Run pgperltidy 2025-06-29 21:14:21 -04:00
examples libpq: Deprecate pg_int64. 2025-03-25 21:40:00 +13:00
icu Update copyright for 2025 2025-01-01 11:21:55 -05:00
isolation Fix concurrent update issue with MERGE. 2025-09-05 08:21:35 +01:00
kerberos Replace deprecated log_connections values in docs and tests 2025-05-22 17:14:54 -04:00
ldap Replace deprecated log_connections values in docs and tests 2025-05-22 17:14:54 -04:00
locale Update copyright for 2025 2025-01-01 11:21:55 -05:00
mb Fix MB regression tests for WAL-logging of hash indexes. 2017-03-15 07:25:36 -04:00
modules Message style improvements 2025-08-26 22:48:00 +02:00
perl Fix missing "use Test::More" in Kerberos.pm. 2025-08-18 14:54:59 -04:00
postmaster Run pgperltidy 2025-06-29 21:14:21 -04:00
recovery Restrict psql meta-commands in plain-text dumps. 2025-08-11 09:00:00 -05:00
regress Amend recent fix for SIMILAR TO regex conversion. 2025-09-13 16:55:51 -04:00
ssl Fix sslkeylogfile error handling logging 2025-07-10 23:26:51 +02:00
subscription Message wording improvements 2025-08-25 22:59:00 +02:00
Makefile Add PG_TEST_EXTRA configure option to the Make builds 2024-11-04 14:09:38 +02:00
meson.build Update copyright for 2025 2025-01-01 11:21:55 -05:00
README Remove the option to build thread_test.c outside configure. 2020-10-21 12:08:48 -04:00

README 

PostgreSQL tests
================

This directory contains a variety of test infrastructure as well as some of the
tests in PostgreSQL. Not all tests are here -- in particular, there are more in
individual contrib/ modules and in src/bin.

Not all these tests get run by "make check". Check src/test/Makefile to see
which tests get run automatically.

authentication/
  Tests for authentication (but see also below)

examples/
  Demonstration programs for libpq that double as regression tests via
  "make check"

isolation/
  Tests for concurrent behavior at the SQL level

kerberos/
  Tests for Kerberos/GSSAPI authentication and encryption

ldap/
  Tests for LDAP-based authentication

locale/
  Sanity checks for locale data, encodings, etc

mb/
  Tests for multibyte encoding (UTF-8) support

modules/
  Extensions used only or mainly for test purposes, generally not suitable
  for installing in production databases

perl/
  Infrastructure for Perl-based TAP tests

recovery/
  Test suite for recovery and replication

regress/
  PostgreSQL's main regression test suite, pg_regress

ssl/
  Tests to exercise and verify SSL certificate handling

subscription/
  Tests for logical replication