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Jeff Davis f3a01af29b ICU: do not convert locale 'C' to 'en-US-u-va-posix'.
Older versions of ICU canonicalize "C" to "en-US-u-va-posix"; but
starting in ICU version 64, the "C" locale is considered
obsolete. Postgres commit ea1db8ae70 introduced code to always
canonicalize "C" to "en-US-u-va-posix" for consistency and
convenience, but it was deemed too confusing.

This commit removes that code, so that "C" is treated like other ICU
locale names: canonicalization is attempted, and if it fails, the
behavior is controlled by icu_validation_level.

A similar change was previously committed as f7faa9976c, then reverted
due to an ICU-version-dependent test failure. This commit un-reverts
it, omitting the test because we now expect the behavior to depend on
the version of ICU being used.

Discussion: https://postgr.es/m/3a200aca-4672-4b37-fc91-5d198a323503%40eisentraut.org
Discussion: https://postgr.es/m/f83f089ee1e9acd5dbbbf3353294d24e1f196e95.camel@j-davis.com
Discussion: https://postgr.es/m/37520ec1ae9591f83132f82dbd625f3fc2d69c16.camel@j-davis.com
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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.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download/

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.
Description
Зеркало официального репозитория PostgreSQL GIT
Readme 1.1 GiB
Languages
C 85.3%
PLpgSQL 5.9%
Perl 4.4%
Yacc 1.2%
Meson 0.7%
Other 2.2%