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This extends the work begun by a73952b, with the addition of a GUC check for flag combinations in check_GUC_init(), making sure that anything defined with GUC_NO_SHOW_ALL also includes GUC_NOT_IN_SAMPLE, as first step. There has never been any GUCs of this kind in the core code, and this combination makes little sense as a parameter marked as not fit for SHOW ALL should not be hidden in postgresql.conf.sample. Note that GUCs marked with GUC_NO_SHOW_ALL are not listed under pg_settings or SHOW ALL (still they can be queried individually), making them unfit for checks via SQL queries in the regression tests that do a full scan of the parameters available. The SQL tests are still a bit incorrect about that, and will be cleaned up in a separate commit. We have also discussed the possibility to extend the SQL functions for GUCs so as they could show more information about parameters defined with GUC_NO_SHOW_ALL, though it has been concluded that this is not worth the extra complication in the long run, an enforced policy at initialization time being enough to do the same job. Per discussion with Nitin Jadhav and Tom Lane. Discussion: https://postgr.es/m/CAMm1aWaYe0muu3ABo7iSAgK+OWDS9yNe8GGRYnCyeEpScYKa+g@mail.gmail.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/.