https://lists.ubuntu.com/archives/bazaar/2005q2/000572.html
[PATCH] Trivial. Fixed takes_args of cmd_relpath
patchtrivialfixedtakesargs
https://packagist.org/packages/wikimedia/relpath
wikimedia/relpath - Packagist.org
Work with file paths to join or find the relative path
wikimediapackagist