From: "Andreas Röhler" <andreas.roehler@easy-emacs.de>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: help-gnu-emacs <help-gnu-emacs@gnu.org>, Tassilo Horn <tsdh@gnu.org>
Subject: Re: `looking-back' strange warning
Date: Thu, 01 Oct 2015 10:46:42 +0200 [thread overview]
Message-ID: <560CF2F2.1060601@easy-emacs.de> (raw)
In-Reply-To: <878u7nhueu.fsf@gnu.org>
Am 01.10.2015 um 10:20 schrieb Tassilo Horn:
> Andreas Röhler <andreas.roehler@easy-emacs.de> writes:
>
>>>> Docu bug?
>>> It's a feature: calling `looking-back' without LIMIT is slow, don't do that.
>> Hmm, would volontier to make that fast instead - if write-permission
>> is given :)
> Looking at the code, I'd say `looking-back' is only slow if GREEDY is t
> in which case the start of the match may be before LIMIT anyhow. So I
> don't see how providing a LIMIT would help too much, or is
> `re-search-backward' already slow without LIMIT?
AFAIK thats it.
Also "greedy" seems not to work at all:
(defun foo3 ())
(progn (re-search-backward "o+" nil t 3)
(message "%s" (match-beginning 0)))
The first "o" is reported as match-beginning.
next prev parent reply other threads:[~2015-10-01 8:46 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-30 8:25 `looking-back' strange warning Andreas Röhler
2015-10-01 6:20 ` Michael Heerdegen
2015-10-01 6:25 ` Tassilo Horn
2015-10-01 6:50 ` Dmitry Gutov
2015-10-01 7:49 ` Andreas Röhler
2015-10-01 8:20 ` Tassilo Horn
2015-10-01 8:46 ` Andreas Röhler [this message]
2015-10-01 9:29 ` Tassilo Horn
2015-10-02 0:10 ` Stefan Monnier
2015-10-02 15:21 ` Tassilo Horn
2015-10-01 16:00 ` Drew Adams
2015-10-01 17:56 ` Dmitry Gutov
2015-10-01 18:24 ` Andreas Röhler
2015-10-01 18:59 ` Dmitry Gutov
2015-10-01 19:55 ` Andreas Röhler
2015-10-01 20:26 ` Dmitry Gutov
2015-10-02 0:15 ` Stefan Monnier
2015-10-02 1:18 ` Michael Heerdegen
2015-10-02 5:13 ` Drew Adams
2015-10-02 20:28 ` Drew Adams
2015-10-02 20:59 ` Tassilo Horn
2015-10-02 21:35 ` Drew Adams
2015-10-03 6:26 ` Tassilo Horn
2015-10-03 6:45 ` Andreas Röhler
2015-10-03 15:20 ` Drew Adams
2015-10-03 15:17 ` Drew Adams
2015-10-02 1:19 ` Michael Heerdegen
2015-10-02 5:12 ` Drew Adams
2015-10-02 6:16 ` Andreas Röhler
2015-10-02 6:36 ` Michael Heerdegen
2015-10-02 12:46 ` Stefan Monnier
2015-10-02 15:02 ` Drew Adams
2015-10-02 19:08 ` Tom Tromey
2015-10-02 19:33 ` Stefan Monnier
2015-10-03 18:11 ` Stefan Monnier
[not found] ` <mailman.176.1443721449.16064.help-gnu-emacs@gnu.org>
2015-10-01 18:50 ` Barry Margolin
[not found] ` <<barmar-D40496.14502501102015@88-209-239-213.giganet.hu>
2015-10-01 23:42 ` Drew Adams
2015-10-02 0:12 ` Stefan Monnier
2015-10-02 5:10 ` Drew Adams
2015-10-02 12:48 ` Stefan Monnier
2015-10-02 15:03 ` Drew Adams
2015-10-02 15:21 ` Stefan Monnier
2015-10-02 15:24 ` Drew Adams
2015-10-02 19:28 ` Stefan Monnier
2015-10-01 12:35 ` Artur Malabarba
[not found] <<560B9C7F.2060301@easy-emacs.de>
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