From: Steve Youngs <steve@sxemacs.org>
To: emacs-devel@gnu.org
Subject: Re: [PATCH] New convenience macros
Date: Thu, 23 Aug 2007 20:54:10 +1000 [thread overview]
Message-ID: <microsoft-free.874piq4j3h.fsf@youngs.au.com> (raw)
In-Reply-To: E1INC1e-0000oV-1r@fencepost.gnu.org
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* Richard Stallman <rms@gnu.org> writes:
> However, Stefan wrote:
> The advantage over a macro is that the elisp code will work regardless of
> whether this optimization is implemented (it only affects byte-compiler
> warnings anyway), so it's trivially backward&forward compatible.
> This is a good argument for _using_ featurep rather than the macros.
> That doesn't mean we can't also install the macros. But maybe you
> will agree it is better to use featurep.
Yes, I agree. I'm even going to add a similar optimisation to SXEmacs
and XEmacs. However, there are situations where this optimisation won't
work, here's an example...
(if (and (featurep 'simple) (featurep 'xemacs)) a b)
warns about free variables for both `a' and `b'. So I think having the
macros as well as the optimisation is a good idea. Can you please add
them, Richard? (with the updated names of course)
Thanks very much.
--
|---<Steve Youngs>---------------<GnuPG KeyID: A94B3003>---|
| SXEmacs - The only _______ you'll ever need. |
| Fill in the blank, yes, it's THAT good! |
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next prev parent reply other threads:[~2007-08-23 10:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-18 14:30 [PATCH] New convenience macros Steve Youngs
2007-08-19 15:52 ` Richard Stallman
2007-08-20 2:06 ` Steve Youngs
2007-08-20 10:58 ` Kim F. Storm
2007-08-20 18:30 ` Richard Stallman
2007-08-23 10:54 ` Steve Youngs [this message]
2007-08-23 14:12 ` Johan Bockgård
2007-08-23 14:47 ` Stefan Monnier
2007-08-23 18:24 ` Steve Youngs
2007-08-23 19:12 ` Stefan Monnier
2007-08-26 14:52 ` Steve Youngs
2007-08-26 22:47 ` Richard Stallman
2007-08-27 3:20 ` Steve Youngs
2007-08-20 4:09 ` Stefan Monnier
2007-08-23 11:13 ` Steve Youngs
2007-08-23 15:11 ` Stefan Monnier
2007-08-23 18:24 ` Steve Youngs
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