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The NFC recomposition incorrectly included TBASE as a valid T syllable, which is incorrect based on the Unicode specification (TBASE is one below the start of the range, range beginning at U+11A8). This would cause the TBASE to be silently swallowed in the normalization, leading to an incorrect result. A couple of regression tests are added to check more patterns with Hangul recomposition and decomposition, on top of a test to check the problem with TBASE. Diego has submitted the code fix, and I have written the tests. Author: Diego Frias <mail@dzfrias.dev> Co-authored-by: Michael Paquier <michael@paquier.xyz> Discussion: https://postgr.es/m/B92ED640-7D4A-4505-B09F-3548F58CBB16@dzfrias.dev Backpatch-through: 14
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