svenfuchs/cl

examples/readme/note

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#!/usr/bin/env ruby
$: << File.expand_path('lib')

require 'cl'

class Add < Cl::Cmd
  register :add

  opt '--to GROUP', note: 'needs to be a group'
end

Cl.new('owners').run(%w(add --help))

# Output:
#
#   Usage: owners add [options]
#
#   Options:
#
#     --to GROUP      type: string, note: needs to be a group
#     --help          Get help on this command