From: Brian Candler <b.candler@...>
Date: 2009-07-19T04:34:59+09:00
Subject: Re: regexp exclusion search - find matches NOT ending with a string?

Glenn Jackman wrote:
> Is the Ruby regular expression syntax documented anywhere?
> 
> I was attempting to use a look-behind, but it's not supported.
> 
> The syntax is not documented in the RegExp rdocs

In my opinion, documentation is Ruby's weakest aspect by far - and the 
deficiency has gotten substantially worse with ruby 1.9.

Best available information is in third-party books, which presumably 
have reverse-engineered from the source code. I fairly often resort to 
irb to check behaviour is what I want, and have on occasions had to 
resort to reading the source.
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