colorit --version (return code: 0)
colorit 0.0.1
colorit --help (return code: 0)
colorit is intended to markup stdin or input files
and output result to stdout
usage: colorit [OPTIONS] [files...]
OPTIONS:
-h --help display this screen
-V --verbose display version
-c --config specify a configuration file
--pp specify preprocessor (- for none). The default is "m4"