From: Peter Stephenson <pws@ifh.de>
To: zsh-workers@math.gatech.edu (Zsh hackers list)
Subject: Re: PATCH: zsh 3.x: <..> ranges in globbing
Date: Mon, 12 Jan 1998 17:59:27 +0100 [thread overview]
Message-ID: <199801121659.RAA19900@hydra.ifh.de> (raw)
In-Reply-To: "Andrej Borsenkow"'s message of "Mon, 12 Jan 1998 19:16:55 MET." <Pine.SV4.3.95.980112190642.11157B-100000@itsrm1>
Andrej Borsenkow wrote:
> On Mon, 12 Jan 1998, Peter Stephenson wrote:
> > You should probably note that <100->0foo won't match 1000foo, since
> > the 1000 gets swallowed up before the shell even knows it's going
> > to have to match another digit next. This is a much more difficult
> > problem requiring backtracking. I could make a special case so that
> > simple things like this work, but expressions like <100->(0|bar)foo would
> > require much more fiddling. (Of course, <100-999>0foo works now.)
>
> I am not sure, that it is right thing.
No, it's definitely wrong if you think in ordinary pattern matching terms
(and that's just what I suggested you should do for the patch I sent). It
just seems too minor to fix at the moment. It could be done by implementing
the range operator as a sort of closure using the new backtracking code.
--
Peter Stephenson <pws@ifh.de> Tel: +39 50 911239
WWW: http://www.ifh.de/~pws/
Gruppo Teorico, Dipartimento di Fisica
Piazza Torricelli 2, 56100 Pisa, Italy
next prev parent reply other threads:[~1998-01-12 17:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-12-31 5:56 Geoff Wing
1997-12-31 6:17 ` Geoff Wing
1998-01-12 11:13 ` PATCH: zsh 3.x: " Peter Stephenson
1998-01-12 16:16 ` Andrej Borsenkow
1998-01-12 16:59 ` Peter Stephenson [this message]
1998-01-12 17:10 ` Andrew Main
1998-01-12 17:50 ` Andrej Borsenkow
1997-12-31 21:37 ` Wessel Dankers
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