Shameless self-plug: you may be interested in my version of docopt at https://github.com/ridiculousfish/docopt_fish https://github.com/ridiculousfish/docopt_fis

Shameless self-plug: you may be interested in my version of docopt at https://github.com/ridiculousfish/docopt_fish https://github.com/ridiculousfish/docopt_fish . Its syntax is more forgiving, it's capable of expressing more usage specs, and it has excellent error reporting for doc strings.