From: Brian Candler <B.Candler@...>
Date: 2003-08-27T06:02:50+09:00
Subject: Re: Specification of Ruby regex?

On Tue, Aug 26, 2003 at 05:37:12PM +0900, Mark Wilson wrote:
> >I was just wondering... Is there any place where Ruby's Regex
> >capabilities are described?
> >
> >[snip]
> 
> Ruby's regular expressions are almost identical to Perl's.

Except where they are different. The biggest glaring difference is that
^ and $ do not mean "match start of string" and "match end of string"

   a.untaint if /^[a-z]+$/ =~ a        # WRONG and maybe dangerous
   a.untaint if /\A[a-z]+\z/ =~ a      # right

Regards,

Brian.