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From: "Andreas Röhler" <andreas.roehler@online.de>
To: herring@lanl.gov
Cc: Emacs developers <emacs-devel@gnu.org>
Subject: Re: Possible problem with looking-back function
Date: Thu, 19 Aug 2010 08:09:15 +0200	[thread overview]
Message-ID: <4C6CCA8B.5060106@online.de> (raw)
In-Reply-To: <49933.130.55.132.107.1282185810.squirrel@webmail.lanl.gov>

Am 19.08.2010 04:43, schrieb Davis Herring:
>> Shouldn't it return 1?
>>      
> The algorithm searches backward until it finds a position from which there
> is a match that extends to point.  Doing more would be quadratic

Hi,

that surprises me.
Check must be done against the string already found.
So workload should grow lineary resp. slightly ascending.

AFAIK exists a bug, resp. missing implementation in re-search-backward.

Cheers

Andreas

--
https://code.launchpad.net/~a-roehler/python-mode
https://code.launchpad.net/s-x-emacs-werkstatt/



>   in the
> value of point (at least), so is considered too slow.
>
> Davis
>
>    




  reply	other threads:[~2010-08-19  6:09 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-19  1:15 Possible problem with looking-back function Vinicius Jose Latorre
2010-08-19  2:43 ` Davis Herring
2010-08-19  6:09   ` Andreas Röhler [this message]
2010-08-19  8:01     ` Stefan Monnier
2010-08-19  9:02     ` Stephen J. Turnbull
2010-08-19  9:32       ` Andreas Röhler
2010-08-20  2:11   ` Vinicius Jose Latorre
2010-08-20 13:07     ` Stefan Monnier
2010-08-21  0:08       ` Vinicius Jose Latorre

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