From: Juanma Barranquero <lekktu@gmail.com>
To: "Andreas Röhler" <andreas.roehler@easy-emacs.de>
Cc: help-gnu-emacs@gnu.org
Subject: Re: string-match bug?
Date: Tue, 8 Dec 2009 12:35:34 +0100 [thread overview]
Message-ID: <f7ccd24b0912080335l79af9edasb781922d6a817508@mail.gmail.com> (raw)
In-Reply-To: <4B1E2DA8.3090907@easy-emacs.de>
On Tue, Dec 8, 2009 at 11:42, Andreas Röhler
<andreas.roehler@easy-emacs.de> wrote:
> Well, string-match should tell first point of occurrence if any.
This is exactly what it does.
> If we have none, as with slightly changed example
>
> (string-match "xyzzy" "foox-a-yzzybar")
> it duly returns "nil" - and not "0" saying falsly "first point of non-occurence"
It returns nil, i.e.: there's no point in the target string at which
the regexp matches.
> (string-match "" "fooxyzzybar") asks, if there is an empty string in string.
> If yes, report the starting point of the empty string.
>
> Does string start with an empty string? IMHO not.
It returns 0, i.e.: this is the point at which the target string
matches ("" will match at the beginning of every string).
It's entirely consistent. You want string-match to answer different
questions in your first and second examples.
Juanma
next prev parent reply other threads:[~2009-12-08 11:35 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.12437.1260197731.2239.help-gnu-emacs@gnu.org>
2009-12-07 15:08 ` string-match bug? Colin S. Miller
2009-12-07 15:25 ` Colin S. Miller
2009-12-07 20:37 ` Andreas Röhler
2009-12-07 21:23 ` Matthew Dempsky
2009-12-08 10:42 ` Andreas Röhler
2009-12-08 11:35 ` Juanma Barranquero [this message]
2009-12-08 11:50 ` Peter Münster
[not found] ` <mailman.12522.1260273034.2239.help-gnu-emacs@gnu.org>
2009-12-08 15:56 ` Stefan Monnier
[not found] ` <mailman.12517.1260268988.2239.help-gnu-emacs@gnu.org>
2009-12-14 13:53 ` David Kastrup
[not found] ` <mailman.12469.1260221021.2239.help-gnu-emacs@gnu.org>
2009-12-08 3:22 ` Barry Margolin
2009-12-08 10:50 ` Andreas Röhler
2009-12-08 11:31 ` Peter Dyballa
2009-12-08 13:55 ` Andreas Röhler
[not found] ` <mailman.12518.1260269458.2239.help-gnu-emacs@gnu.org>
2009-12-08 20:48 ` Barry Margolin
2009-12-08 21:23 ` Pascal J. Bourguignon
2009-12-09 16:16 ` Stefan Monnier
2009-12-08 23:48 ` Matthew Dempsky
2009-12-09 8:05 ` Andreas Röhler
2009-12-09 12:56 ` Juanma Barranquero
2009-12-09 17:33 ` Andreas Röhler
2009-12-09 18:07 ` Matthew Dempsky
2009-12-09 18:13 ` tomas
2009-12-09 18:59 ` Andreas Röhler
2009-12-09 21:15 ` Matthew Dempsky
[not found] ` <mailman.12615.1260385212.2239.help-gnu-emacs@gnu.org>
2009-12-10 0:22 ` Barry Margolin
2009-12-09 18:11 ` tomas
2009-12-10 3:05 ` Kevin Rodgers
[not found] ` <mailman.12630.1260414617.2239.help-gnu-emacs@gnu.org>
2009-12-10 5:34 ` Stefan Monnier
2009-12-10 10:01 ` tomas
2009-12-10 11:00 ` Andreas Politz
2009-12-11 4:37 ` Kevin Rodgers
[not found] ` <mailman.12651.1260442881.2239.help-gnu-emacs@gnu.org>
2009-12-14 13:59 ` David Kastrup
[not found] ` <mailman.12606.1260380004.2239.help-gnu-emacs@gnu.org>
2009-12-09 19:08 ` Frank Fredstone
2009-12-10 19:25 ` Andreas Röhler
2009-12-10 23:41 ` Juanma Barranquero
[not found] ` <mailman.12689.1260473128.2239.help-gnu-emacs@gnu.org>
2009-12-10 20:40 ` Frank Fredstone
2009-12-09 21:33 ` Stefan Monnier
2009-12-10 6:38 ` Andreas Röhler
2009-12-14 13:51 ` David Kastrup
2009-12-07 14:55 Andreas Roehler
2009-12-07 15:31 ` Pierre Lorenzon
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