From: martin rudalics <rudalics@gmx.at>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Herbert Euler <herberteuler@hotmail.com>, emacs-devel@gnu.org
Subject: Re: find-file-noselect needs save-match-data
Date: Wed, 06 Jun 2007 14:49:38 +0200 [thread overview]
Message-ID: <4666AD62.1060406@gmx.at> (raw)
In-Reply-To: <jwvmyzdffed.fsf-monnier+emacs@gnu.org>
>>Both throw away match-data immediately. If match-data is expensive why
>>build it in the first place when it's not needed? Why not make a thing
>>like `fast-string-match' available in Lisp?
>
>
> It's not the match data that's expensive. It's the save-match-data.
> The match-data is built cheaply during the call to string-match in the form
> of a C data structure. It's only when `match-data' is called that it ends
> up building a Lisp lisp (sometimes with markers to boot).
match-data is expensive because it consumes (1) brain resources when
people have to think about saving it before they write another match
operation, and (2) processing resources when they decide to save it.
next prev parent reply other threads:[~2007-06-06 12:49 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-04 15:17 find-file-noselect needs save-match-data Herbert Euler
2007-06-04 16:05 ` martin rudalics
2007-06-05 3:10 ` Herbert Euler
2007-06-05 5:52 ` martin rudalics
2007-06-05 22:32 ` Richard Stallman
2007-06-06 1:13 ` Stefan Monnier
2007-06-06 1:44 ` Herbert Euler
2007-06-06 6:58 ` martin rudalics
2007-06-06 7:25 ` David Kastrup
2007-06-06 22:09 ` Richard Stallman
2007-06-06 12:14 ` Stefan Monnier
2007-06-06 22:09 ` Richard Stallman
2007-06-06 6:57 ` martin rudalics
2007-06-06 12:17 ` Stefan Monnier
2007-06-06 12:33 ` Lennart Borgman (gmail)
2007-06-06 12:49 ` martin rudalics [this message]
2007-06-06 22:10 ` Richard Stallman
2007-06-06 22:29 ` Stefan Monnier
2007-06-08 7:11 ` Richard Stallman
2007-06-08 8:31 ` Kim F. Storm
2007-06-08 9:42 ` martin rudalics
2007-06-08 10:31 ` Kim F. Storm
2007-06-09 9:45 ` Richard Stallman
2007-06-10 0:05 ` Herbert Euler
2007-06-10 0:11 ` Herbert Euler
2007-06-09 9:46 ` Richard Stallman
2007-06-09 21:32 ` Juri Linkov
2007-06-09 21:59 ` David House
2007-06-09 22:43 ` Juri Linkov
2007-06-09 22:53 ` Jason Rumney
2007-06-09 23:59 ` Miles Bader
2007-06-10 0:02 ` Drew Adams
2007-06-10 13:19 ` Richard Stallman
2007-06-12 3:05 ` Bob Rogers
2007-06-12 4:06 ` Miles Bader
2007-06-12 16:45 ` Juri Linkov
2007-06-12 17:46 ` Andreas Schwab
2007-06-12 21:55 ` David Kastrup
2007-06-12 22:10 ` Miles Bader
2007-06-12 22:37 ` David Kastrup
2007-06-13 16:22 ` Richard Stallman
2007-06-13 17:31 ` Stefan Monnier
2007-06-13 18:33 ` David Kastrup
2007-06-13 19:55 ` Stefan Monnier
2007-06-14 6:37 ` Herbert Euler
2007-06-15 8:48 ` Richard Stallman
2007-06-15 14:22 ` Stefan Monnier
2007-06-15 16:03 ` Herbert Euler
2007-06-14 6:57 ` martin rudalics
2007-06-14 14:36 ` Stefan Monnier
2007-06-14 16:05 ` Herbert Euler
2007-06-14 16:22 ` Stefan Monnier
2007-06-15 1:59 ` Herbert Euler
2007-06-15 8:49 ` Richard Stallman
2007-06-15 8:49 ` Richard Stallman
2007-06-14 6:57 ` martin rudalics
2007-06-15 8:48 ` Richard Stallman
2007-06-15 14:23 ` Stefan Monnier
2007-06-15 22:45 ` Richard Stallman
2007-06-17 19:54 ` Juri Linkov
2007-06-17 20:27 ` Lennart Borgman (gmail)
2007-06-14 16:19 ` Richard Stallman
2007-06-14 17:18 ` David Kastrup
2007-06-15 19:21 ` Richard Stallman
2007-06-15 19:52 ` Stefan Monnier
2007-06-13 23:39 ` Miles Bader
2007-06-14 0:52 ` Stefan Monnier
2007-06-14 6:58 ` martin rudalics
2007-06-14 16:20 ` Richard Stallman
2007-06-14 18:50 ` Stefan Monnier
2007-06-15 6:31 ` martin rudalics
2007-06-15 14:20 ` Stefan Monnier
2007-06-15 15:55 ` Herbert Euler
2007-06-15 19:22 ` Richard Stallman
2007-06-16 10:01 ` martin rudalics
2007-06-16 22:35 ` Richard Stallman
2007-06-15 19:21 ` Richard Stallman
2007-06-15 19:55 ` Stefan Monnier
2007-06-15 20:03 ` David Kastrup
2007-06-16 18:51 ` Richard Stallman
2007-06-16 19:10 ` David Kastrup
2007-06-17 21:49 ` Richard Stallman
2007-06-18 5:16 ` David Kastrup
2007-06-18 21:30 ` Richard Stallman
2007-06-18 21:42 ` David Kastrup
2007-06-19 22:26 ` Richard Stallman
2007-06-19 22:42 ` David Kastrup
2007-06-25 13:19 ` Richard Stallman
2007-06-16 3:50 ` Herbert Euler
2007-06-17 12:28 ` Stefan Monnier
2007-06-16 18:51 ` Richard Stallman
2007-06-16 21:39 ` Miles Bader
2007-06-17 8:55 ` Richard Stallman
2007-06-17 3:19 ` Herbert Euler
2007-06-17 3:26 ` Herbert Euler
2007-06-17 21:49 ` Richard Stallman
2007-06-17 12:50 ` Stefan Monnier
2007-06-18 7:25 ` Richard Stallman
2007-06-20 8:07 ` Herbert Euler
2007-06-20 14:12 ` Juri Linkov
2007-06-20 14:44 ` Herbert Euler
2007-06-21 1:07 ` Richard Stallman
2007-06-21 1:29 ` Herbert Euler
2007-06-21 6:31 ` David Kastrup
2007-06-28 14:06 ` Herbert Euler
2007-06-29 15:07 ` Herbert Euler
2007-07-06 17:05 ` byte-compiling an elisp-file fails in Emacs 22.1 (reproducable) klaus.berndl
2007-07-06 22:20 ` Jason Rumney
2007-07-07 13:06 ` Richard Stallman
2007-07-08 6:30 ` AW: " klaus.berndl
2007-06-22 1:51 ` find-file-noselect needs save-match-data Richard Stallman
2007-06-20 17:36 ` Richard Stallman
2007-06-13 16:21 ` Richard Stallman
2007-06-05 5:18 ` Richard Stallman
2007-06-06 1:10 ` Stefan Monnier
2007-06-14 16:19 ` Stefan Monnier
-- strict thread matches above, loose matches on Subject: below --
2007-06-06 0:25 Herbert Euler
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