Date: Mon, 02 Oct 2000 14:37:13 -0400 From: "Andresen,Jason R." <jandrese@mitre.org> To: Mark Ovens <marko@FreeBSD.ORG> Cc: Christopher Rued <c.rued@xsb.com>, freebsd-questions@FreeBSD.ORG Subject: Re: Perl question Message-ID: <39D8D5D9.67A3074B@mitre.org> References: <14808.52583.347797.384055@chris.xsb.com> <20001002191537.G252@parish> <20001002192617.I252@parish>
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Mark Ovens wrote:
>
> On Mon, Oct 02, 2000 at 07:15:37PM +0100, Mark Ovens wrote:
> > /a.?c.*d/;
>
> Doh, typo! That should read
>
> /a.*?c.*d/;
>
> BTW, your RE should have a ``*'' as well:
>
> /x.*?y/
>
Maybe, it depends on exactly what he was trying to get.
The first 3 character match where x and y are the first and third
character respectivly, then x.y is exactly what you want. The smallest
set of characters that have x and y as boundry values? Then your x.*?y
is correct. The smallest set of characters that have x and y as
boundries and have at least one character in between them? x.+?y is
needed.
I'm reminded of the day my daughter came in, looked over my shoulder at
some Perl 4 code, and said, "What is that, swearing?"
-- Larry Wall in <199806181642.JAA10629@wall.org>
--
_ _ _ ___ ____ ___ ______________________________________
/ \/ \ | ||_ _|| _ \|___| | Jason Andresen -- jandrese@mitre.org
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