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When a password is needed, cases such as psql -d "postgresql://alice@localhost/testdb" -U bob would incorrectly prompt for "Password for user bob: ", when actually the connection will be attempted with username alice. The priority order of which name to use isn't that important here, but the misleading prompt is. When we are prompting for a password after initial connection failure, we can fix this reliably by looking at PQuser(conn) to see how libpq interpreted the connection arguments. But when we're doing a forced password prompt because of a -W switch, we can't use that solution. Fortunately, because the main use of -W is for noninteractive situations, it's less critical to produce a helpful prompt in such cases. I made the startup prompt for -W just say "Password: " all the time, rather than expending extra code on trying to identify which username to use. In the case of a \c command (after -W has been given), there's already logic in do_connect that determines whether the "dbname" is a connstring or URI, so we can avoid lobotomizing the prompt except in cases that are actually dubious. (We could do similarly in startup.c if anyone complains, but for now it seems not worthwhile, especially since that would still be only a partial solution.) Per bug #15025 from Akos Vandra. Although this is arguably a bug fix, it doesn't seem worth back-patching. The case where it matters seems like a very corner-case usage, and someone might complain that we'd changed the behavior of -W in a minor release. Discussion: https://postgr.es/m/20180123130013.7407.24749@wrigleys.postgresql.org |
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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/.