# File lib/travis/cli.rb, line 67
    def command(name)
      const_name = command_name(name)
      constant   = CLI.const_get(const_name) if const_name =~ /^[A-Z][A-Za-z]+$/ and const_defined? const_name
      if command? constant
        constant
      else
        $stderr.puts "unknown command #{name}"
        exit 1
      end
    end