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Next generation of PostgreSQL code indenter
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src/tools/pgindent/README will indent .c amd .h files according to the coding standards of the PostgreSQL project. It needs several things to run, and tries to locate or build them if possible. They can also be specified via command line switches or the environment.

In its simplest form, if all the required objects are installed, simply run it without any parameters at the top of the source tree you want to process. 

If you don't have all the requirements installed, pgindent will fetch and build them for you, if you're in a PostgreSQL source tree: --build

If your indent program is not installed in your path, you can specify it by setting the environment variable INDENT, or PGINDENT, or by giving the command line option --indent: --indent=/opt/extras/bsdindent

Similarly, the entab program can be specified using the PGENTAB environment variable, or using the --entab command line option. also needs a file containing a list of typedefs. This can be specified using the PGTYPEDEFS environment variable, or via the command line --typedefs option. If neither is used, it will look for it within the current source tree, or in /usr/local/etc/typedefs.list.

If you want to indent a source tree other than the current working directory, you can specify it via the --code-base command line option.

We don't want to indent certain files in the PostgreSQL source. will honour a file containing a list of patterns of files to avoid. This file can be specified using the --excludes command line option. If indenting a PostgreSQL source tree, this option isn't necessary, as it will find the file src/tools/pgindent/exclude_file_patterns.

Any non-option arguments are taken as the names of files to be indented. In this case only these files will be changed, and nothing else will be touched. If the first non-option argument is not a .c or .h file, it is treated as the name of a typedefs file for legacy reasons, but this use is deprecated - use the --typedefs option instead.

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