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Even though the server tries to canonicalize stored locale names, the platform often doesn't cooperate, so it's entirely possible that one DB thinks its locale is, say, "en_US.UTF-8" while the other has "en_US.utf8". Rather than failing, we should try to allow this where it's clearly OK. There is already pretty robust encoding lookup in encnames.c, so make use of that to compare the encoding parts of the names. The locale identifier parts are just compared case-insensitively, which we were already doing. The major problem known to exist in the field is variant encoding-name spellings, so hopefully this will be Good Enough. If not, we can try being even laxer. Pavel Raiskup, reviewed by Rushabh Lathia
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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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/.