python3-unidiff -V (return code: 2)
usage: python3-unidiff [-h] [--show-diff] [-f DIFF_FILE]
python3-unidiff: error: unrecognized arguments: --version
python3-unidiff --help (return code: 0)
usage: python3-unidiff [-h] [--show-diff] [-f DIFF_FILE]
Unified diff metadata.
Examples:
$ git diff | unidiff
$ hg diff | unidiff --show-diff
$ unidiff -f patch.diff
optional arguments:
-h, --help show this help message and exit
--show-diff output diff to stdout
-f DIFF_FILE, --file DIFF_FILE
if not specified, read diff data from stdin