# File lib/mercenary/command.rb, line 191
    def add_default_options(opts)
      option 'show_help', '-h', '--help', 'Show this message'
      option 'show_version', '-v', '--version', 'Print the name and version'
      option 'show_backtrace', '-t', '--trace', 'Show the full backtrace when an error occurs'
      opts.on("-v", "--version", "Print the version") do
        puts "#{name} #{version}"
        exit(0)
      end

      opts.on('-t', '--trace', 'Show full backtrace if an error occurs') do
        @trace = true
      end

      opts.on_tail("-h", "--help", "Show this message") do
        puts self
        exit
      end
    end