From: Wes Gamble <weyus@...>
Date: 2006-03-29T03:43:51+09:00
Subject: Re: Regexp to match strings that _don't_ being with a string

In my example, won't /^(?!xyz)/ also match

29384723xyz02342

which is a little more than I want?

WG

Andrew Johnson wrote:
> On Wed, 29 Mar 2006 03:24:36 +0900, Wes Gamble <weyus@att.net> wrote:
> 
>> I tried /^[^(xyz)]/ but I don't trust it.  I don't think the grouping 
>> will take inside the character class.
> 
> The [^(xyz)] creates a negative character class, so your regex would
> match any string that started with a character not in the given set.
> Not what you really want
> 
>> Do I need a negative lookahead assertion?
> 
> That would be a simple solution: /^(?!xyz)/  which will match when
> the beginning of the line/string is not followed by 'xyz'.
> 
> andrew


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