ThorHelp (doesn't work with required options)

thor_help.rb

module ThorHelp
  # This adds a --help option to all Thor commands.

  def self.included(base)
    base.class_eval do
      class_option :help,
        type: :boolean,
        aliases: ["-h"],
        desc: "Describe command"

      class_before :check_help

      no_commands do
        def check_help
          if options[:help]
            help(@_invocations[self.class].first)
            exit
          end
        end
      end
    end
  end
end