From: Miles Bader <miles@gnu.org>
To: Lennart Borgman <lennart.borgman@gmail.com>
Cc: Emacs-Devel devel <emacs-devel@gnu.org>
Subject: Re: Why are there two dolist?
Date: Wed, 12 Aug 2009 07:51:31 +0900 [thread overview]
Message-ID: <87d472m0b0.fsf@catnip.gol.com> (raw)
In-Reply-To: <e01d8a50908111542s2401bb0k9f885f11d6819432@mail.gmail.com> (Lennart Borgman's message of "Wed, 12 Aug 2009 00:42:01 +0200")
Lennart Borgman <lennart.borgman@gmail.com> writes:
>> Most people will never see the cl-macs version; those who _should_ see
>> it will, because they'll have done (require 'cl) first; since the
>> cl-macs version supports the basic subr.el usage, it's OK if some code
>> that doesn't need the extra features ends up se
>
> Does not this open to subtle bugs?
I think it's such a simple macro (at least the basic subr.el version is) that
this isn't such a big problem.
> Would it not be better to move the cl-macs.el version to subr.el?
I haven't looked at the code (recently), but because elisp doesn't
natively support lexical blocks, I suspect the cl-macs version either
(1) adds unnecessary runtime overhead, or (2) drags in lots of big and
crufty compile-time analysis code (cl.el has lots of this) to optimize
away the block when not used.
-miles
--
Religion, n. A daughter of Hope and Fear, explaining to Ignorance the nature
of the Unknowable.
next prev parent reply other threads:[~2009-08-11 22:51 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-11 22:14 Why are there two dolist? Lennart Borgman
2009-08-11 22:36 ` Lennart Borgman
2009-08-12 8:45 ` David Kastrup
2009-08-12 8:52 ` Lennart Borgman
2009-08-11 22:37 ` Miles Bader
2009-08-11 22:42 ` Lennart Borgman
2009-08-11 22:51 ` Miles Bader [this message]
2009-08-11 23:04 ` Lennart Borgman
2009-08-11 23:30 ` Harald Hanche-Olsen
2009-08-11 23:34 ` Miles Bader
2009-08-11 23:41 ` Lennart Borgman
2009-08-11 23:48 ` Miles Bader
2009-08-11 23:39 ` Lennart Borgman
2009-08-12 0:27 ` Harald Hanche-Olsen
2009-08-12 0:33 ` Lennart Borgman
2009-08-12 0:54 ` Miles Bader
2009-08-12 0:59 ` Lennart Borgman
2009-08-12 1:24 ` Harald Hanche-Olsen
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