This comment should probably have been moved to pg_locale_libc.c in commit 66ac94cdc79 (2024), but upon closer examination it was already completely obsolete then. The first part of the comment has been obsolete since commit 85feb77aa09 (2017), which required that the system provides the required wide-character functions. The second part has been obsolete since commit e9931bfb751 (2024), which eliminated code paths depending on the global LC_CTYPE setting. Discussion: https://www.postgresql.org/message-id/flat/170308e6-a7a3-4484-87b2-f960bb564afa%40eisentraut.org
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.