From: Brian Candler <b.candler@...>
Date: 2008-11-13T22:36:19+09:00
Subject: Re: '#' characters are breaking my regexp

Max Williams wrote:
> Bugger.  How annoying...maybe i have some weird gem interference or 
> something. (facets perhaps).  Don't know how to debug that...

1. Run plain irb, don't load any libraries yet,
2. Try the example from the command line, see if it works.
3. If it does, start loading libraries until it breaks.

From the prompt, it looks to me like you're using script/console in 
Rails, so you'll have all the Rails stuff loaded too, like 
ActiveSupport. But that doesn't cause this problem for me:

$ script/console
Loading development environment (Rails 2.1.2)
>> string = "(Ab|Bb|Db|Eb|Gb|A#|C#|D#|F#|G#|A|B|C|D|E|F|G)"
=> "(Ab|Bb|Db|Eb|Gb|A#|C#|D#|F#|G#|A|B|C|D|E|F|G)"
>> regex = Regexp.new(string)
=> /(Ab|Bb|Db|Eb|Gb|A#|C#|D#|F#|G#|A|B|C|D|E|F|G)/
>> 

Nor facets:

>> require 'facets'
=> []
>> regex = Regexp.new(string)
=> /(Ab|Bb|Db|Eb|Gb|A#|C#|D#|F#|G#|A|B|C|D|E|F|G)/
>> 
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