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src/port/getopt_long.c failed on such an argument, always seeing it as an unrecognized switch. This is unhelpful; better is to treat such an item as a non-switch argument. That behavior is what we find in GNU's getopt_long(); it's what src/port/getopt.c does; and it is required by POSIX for getopt(), which getopt_long() ought to be generally a superset of. Moreover, it's expected by ecpg, which intends an argument of "-" to mean "read from stdin". So fix it. Also add some documentation about ecpg's behavior in this area, since that was miserably underdocumented. I had to reverse-engineer it from the code. Per bug #16304 from James Gray. Back-patch to all supported branches, since this has been broken forever. Discussion: https://postgr.es/m/16304-c662b00a1322db7f@postgresql.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. 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/.