extract++ --version (return code: 0)
SWISH++ 6.1.5
extract++ --help (return code: 2)
usage: extract++ [options] dir ... file ...
options: (unambiguous abbreviations may be used for long options)
========
-? | --help : Print this help message
-c f | --config-file f : Name of configuration file [default: swish++.conf]
-e p | --pattern p : Filename pattern to extract [default: none]
-E p | --no-pattern p : Filename pattern not to extract [default: none]
-f | --filter : Filter one file to standard output [default: no]
-l | --follow-links : Follow symbolic links [default: no]
-r | --no-recurse : Don't extract subdirectories [default: do]
-s f | --stop-file f : Stop-word file to use instead of built-in default
-S | --dump-stop : Dump stop-words, exit
-v v | --verbosity v : Verbosity level [0-4; default: 0]
-V | --version : Print version number, exit
-x e | --extension e : Extension to append to filename [default: txt]