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When running on Windows, canonicalize_path() converts '\' to '/' to prevent confusing the Windows command processor. It was doing that in a non-encoding-aware fashion; but in SJIS there are valid two-byte characters whose second byte matches '\'. So encoding corruption ensues if such a character is used in the path. We can fairly easily fix this if we know which encoding is in use, but a lot of our utilities don't have much of a clue about that. After some discussion we decided we'd settle for fixing this only in psql, and assuming that its value of client_encoding matches what the user is typing. It seems hopeless to get the server to deal with the problematic characters in database path names, so we'll just declare that case to be unsupported. That means nothing need be done in the server, nor in utility programs whose only contact with file path names is for database paths. But psql frequently deals with client-side file paths, so it'd be good if it didn't mess those up. Bug: #18735 Reported-by: Koichi Suzuki <koichi.suzuki@enterprisedb.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Koichi Suzuki <koichi.suzuki@enterprisedb.com> Discussion: https://postgr.es/m/18735-4acdb3998bb9f2b1@postgresql.org Backpatch-through: 13
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/.