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If a .c or .h file corresponds to a .y or .l file, skip indenting it. There's no point in reindenting derived files, and these files tend to confuse pgindent. (Which probably indicates a bug in BSD indent, but I can't get excited about trying to fix it.) For the same reasons, add src/backend/utils/fmgrtab.c to the set of files excluded by src/tools/pgindent/exclude_file_patterns. The point of doing this is that it makes it safe to run pgindent over the tree without doing "make maintainer-clean" first. While these are not the only derived .c/.h files in the tree, they are the only ones pgindent fails on. Removing that prerequisite step results in one less way to mess up a pgindent run, and it's necessary if we ever hope to get to the ease of running pgindent via "make indent".
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/.