From: Juanma Barranquero <lekktu@gmail.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org
Subject: Re: Enhancement for file-attributes
Date: Mon, 1 Oct 2012 04:04:58 +0200 [thread overview]
Message-ID: <CAAeL0SRf0zPX6XhB-StnjRQZ=u+tStsAaVPNVXamw=E2J+Q5iw@mail.gmail.com> (raw)
In-Reply-To: <jwvhaqf8031.fsf-monnier+emacs@gnu.org>
On Mon, Oct 1, 2012 at 3:16 AM, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> It would have made a lot of sense originally, but I'm wondering whether
> it's worth the trouble now. In how many places would we save the
> file-chase-links all? Are these places important?
I don't know about that, but a way to ask file-attributes for a
specific value, instead of computing them all and consing them into a
list would perhaps make sense.
I recently counted uses of (nth X (file-attributes ...)), and
variants, like (car (file-attributes ...)) and (let ((atr
(file-attributes ...))) ...), etc. Asking for the file size happens >
110 times in the sources; last modification time, > 50; all the rest,
<10 each (approx, as I counted by hand).
So a function (file-size X) doing an optimized equivalent of (nth 7
(file-attributes (file-truename NAME))) would be useful, and cleaner
IMO.
Juanma
next prev parent reply other threads:[~2012-10-01 2:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-30 14:26 Enhancement for file-attributes Eli Zaretskii
2012-09-30 21:14 ` Paul Eggert
2012-09-30 22:08 ` Eli Zaretskii
2012-10-01 0:45 ` Stefan Monnier
2012-10-01 2:08 ` Paul Eggert
2012-10-08 10:36 ` Michael Albinus
2012-10-01 1:16 ` Stefan Monnier
2012-10-01 2:04 ` Juanma Barranquero [this message]
2012-10-01 12:59 ` Eli Zaretskii
2012-10-01 14:31 ` Stefan Monnier
2012-10-01 14:56 ` Eli Zaretskii
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