# File lib/rbreadline.rb, line 5090
  def rl_backward_byte(count, key)
    if (count < 0)
      return (rl_forward_byte(-count, key))
    end
    if (count > 0)
      if (@rl_point < count)
        @rl_point = 0
        rl_ding()
      else
        @rl_point -= count
      end
    end

    if (@rl_point < 0)
      @rl_point = 0
    end
    0
  end