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If the locale names are not equal, try to canonicalize both of them by passing them to setlocale(). Before, we only canonicalized the old cluster's locale if upgrading from a 8.4-9.2 server, but we also need to canonicalize when upgrading from a pre-8.4 server. That was an oversight in the code. But we should also canonicalize on newer server versions, so that we cope if the canonical form changes from one release to another. I'm about to do just that to fix bug #11431, by mapping a locale name that contains non-ASCII characters to a pure-ASCII alias of the same locale. This is partial backpatch of commit 33755e8edf149dabfc0ed9b697a84f70b0cca0de in master. Apply to 9.2, 9.3 and 9.4. The canonicalization code didn't exist before 9.2. In 9.2 and 9.3, this effectively also back-patches the changes from commit 58274728fb8e087049df67c0eee903d9743fdeda, to be more lax about the spelling of the encoding in the locale names.
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.