Outdented too far

[chengguangnan]

Hello, thank you for the gem.

A minor issue in my usage, the "Outdented too far" exception. In my case, I don't really have anything else to do if it's incorrectly outdented. So I would just ignore it.

#      raise "Outdented too far" if @level < 0
      @level = 0 if @level < 0

[threedaymonk]

That seems reasonable. I think what I'll do is:

• add a warning mode (-w perhaps)
• write a warning to stderr if warnings are enabled
• clamp the indentation level if it drops below zero