From: Max Williams <toastkid.williams@...>
Date: 2008-11-13T22:36:36+09:00
Subject: Re: '#' characters are breaking my regexp

Phlip wrote:
> 
> "abc\\#def"
> 
> When you mash like /#{string}/, the inserted item is not treated as a
> literal string, but as a fragment of Regexp notation. So either first 
> call
> Regexp.escape(string) on it, or make it a valid regexp.
> 
> Next, "" might interpret \# as an escape in string notation, so escape
> _that_ with \\#.
> 
> And I always use '' unless I need the special powers of a "". So 
> 'abc\#def'
> will work, because '' refrains from escaping anything that it doesn't 
> need
> to.

Still no joy i'm afraid:

>> string = 'abc#def'
=> "abc#def"
>> /#{string}/
=> abc
>> Regexp.escape(string)
=> "abc\\#def"
>> Regexp.new(Regexp.escape(string))
=> abc
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