121213d9d8
Previously, we made no attempt to provide tab completion in these
statements' optional parenthesized options lists. This patch teaches
psql to do so.
To prevent the option completions from being offered after we've already
seen a complete parenthesized option list, it's necessary to improve
word_matches() so that it allows a wildcard '*' in the middle of an
alternative, not only at the end as formerly. That requires only a
little more code than before, and it allows us to test for "incomplete
parenthesized options" with a test like
else if (HeadMatches2("EXPLAIN", "(*") &&
!HeadMatches2("EXPLAIN", "(*)"))
In addition, add some logic to offer column names in the context of
"ANALYZE tablename ( ...", and likewise for VACUUM. This isn't real
complete; it won't offer column names again after a comma. But it's
better than before, and it doesn't take much code.
Justin Pryzby, reviewed at various times by Álvaro Herrera, Arthur
Zakirov, and Edmund Horner; some additional fixups by me
Discussion: https://postgr.es/m/20180529000623.GA21896@telsasoft.com
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/.