From: "Pascal J. Bourguignon" <pjb@informatimago.com>
To: emacs-devel@gnu.org
Subject: Re: CL functions called at runtime
Date: Mon, 03 Dec 2012 20:56:34 +0100 [thread overview]
Message-ID: <87mwxuvril.fsf@kuiper.lan.informatimago.com> (raw)
In-Reply-To: kghpq2rge3w.fsf@CDW764-BURTONS.QFTI.COM
Burton Samograd <burton@samograd.ca> writes:
> Hi,
>
> I seemed to have missed the dicussion about the warnings being generated
> by the byte compiler about CL functions being called at runtime. Now
> I'm seeing them in my code for useful functions like remove-if.
>
> Could someone explain why these warnings are being generated?
That's because the functions defined in the file cl.el (and associated
files) are not deemed "pure" emacs lisp enough. (Is the actual reason
because RMS doesn't like Common Lisp, or because they represent a layer
above emacs lisp and therefore may be slower than native emacs lisp
functions? Some other reason I don't know?) It is accepted that they
are used at macro expansion time, in emacs code distributed by the FSF,
but the FSF doesn't want to distribute emacs code that depend on them at
run-time.
Notice however that if you don't have the intention to have your code
integrated with the GNU emacs distribution, then this warning is totally
irrelevant: you can make your code dependant on cl.el as you can make it
dependent on any other emacs package, coming from the FSF or from any
third party.
I have this in my ~/.emacs to disable those warnings:
(require 'bytecomp)
(byte-compile-disable-warning 'cl-functions)
--
__Pascal Bourguignon__ http://www.informatimago.com/
A bad day in () is better than a good day in {}.
next prev parent reply other threads:[~2012-12-03 19:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-03 18:55 CL functions called at runtime Burton Samograd
2012-12-03 19:54 ` Stefan Monnier
2012-12-03 20:03 ` Burton Samograd
2012-12-03 19:55 ` Glenn Morris
2012-12-03 20:00 ` Burton Samograd
2012-12-03 20:22 ` Glenn Morris
2012-12-03 21:53 ` Stefan Monnier
2012-12-03 19:56 ` Pascal J. Bourguignon [this message]
2012-12-03 19:59 ` Daniel Colascione
2012-12-03 20:05 ` Burton Samograd
2012-12-03 23:05 ` Grégoire Jadi
2012-12-03 20:21 ` Glenn Morris
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