def run(args)
    start_time = Time.now

    if args.include?('--')
      # We need to preserve the original ARGV to use for passing gem options
      # to source gems.  If there is a -- in the line, strip all options after
      # it...its for the source building process.
      build_args = args[args.index("--") + 1...args.length]
      args = args[0...args.index("--")]
    end

    Gem::Command.build_args = build_args if build_args

    do_configuration args
    cmd = @command_manager_class.instance

    cmd.command_names.each do |command_name|
      config_args = Gem.configuration[command_name]
      config_args = case config_args
                    when String
                      config_args.split ' '
                    else
                      Array(config_args)
                    end
      Gem::Command.add_specific_extra_args command_name, config_args
    end

    cmd.run Gem.configuration.args
    end_time = Time.now

    if Gem.configuration.benchmark then
      printf "\nExecution time: %0.2f seconds.\n", end_time - start_time
      puts "Press Enter to finish"
      STDIN.gets
    end
  end
#
Run the gem command with the following arguments.