From: kai.grossjohann@gmx.net (Kai Großjohann)
Subject: Re: regexp and strings you don't want
Date: Fri, 29 Aug 2003 21:58:10 +0200 [thread overview]
Message-ID: <84isogutgt.fsf@slowfox.is.informatik.uni-duisburg.de> (raw)
In-Reply-To: usmnk1eol.fsf@ID-87814.user.dfncis.de
Oliver Scholz <alkibiades@gmx.de> writes:
> I've played a bit with this (patch below). But I thing I am a bit
> puzzled. With my patch, `(rx (not top))' translates to:
>
> "\\(?:[^t]*\\|t[^o]*\\|to[^p]*\\)"
>
> Is this actually correct?
Well, err, it depends.
I guess one meaningful meaning of the hypothetical x\\(!:top\\)y would
be to look whether the characters following x are t-o-p. If so, then
fail. If not, then do like xy would have done.
That's what Perl does, I believe.
--
Two cafe au lait please, but without milk.
next prev parent reply other threads:[~2003-08-29 19:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-25 19:45 regexp and strings you don't want Chaz
2003-08-25 20:17 ` Barry Margolin
2003-08-26 18:13 ` Chaz
2003-08-27 15:13 ` Kevin Rodgers
2003-08-29 15:50 ` Stefan Monnier
2003-08-26 22:19 ` Eric Pement
2003-08-27 20:26 ` Kai Großjohann
2003-08-29 16:14 ` Oliver Scholz
2003-08-29 18:50 ` Oliver Scholz
2003-08-29 19:58 ` Kai Großjohann [this message]
2003-08-29 20:38 ` Oliver Scholz
2003-08-30 14:50 ` Ilya Zakharevich
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