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From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: David Kastrup <dak@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: `save-excursion' defeated by `set-buffer'
Date: Tue, 29 Dec 2009 14:01:57 -0200	[thread overview]
Message-ID: <m2637pbwom.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87skb0iw04.fsf@lola.goethe.zz> (David Kastrup's message of "Thu,  24 Dec 2009 10:03:55 +0100")

>>>> Irrelevant: neither example uses (save-excursion (set-buffer ..) ...).
>>> Don't be disingenuous.  with-temp-buffer uses with-current-buffer, which
>>> is basically (save-current-buffer (set-buffer ...
>> save-current-buffer != save-excursion
>> This warning is specifically aimed at reminding people that the two are
>> different, so you clearly need to see this warning a few more times
>> before you start to understand what it's about.
> And you clearly need to reread my post to understand what it's about.
> If you macroexpand with-temp-buffer and save-current-buffer, my argument

save-current-buffer is not a macro.

> still holds: the warning is wrong, and the macro-expanded code
> explicitly uses all those commands which you claim are equivalent in
> this situation, with different results.

Which commands do I claim are equivalent in which circumstance?

Are you saying that (one of) your code(s) using with-temp-buffer causes
the warning to be output?  That would be a bug, indeed.


        Stefan




  reply	other threads:[~2009-12-29 16:01 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-20 19:19 `save-excursion' defeated by `set-buffer' Roland Winkler
2009-12-21 15:26 ` Stefan Monnier
2009-12-21 16:23   ` David Kastrup
2009-12-22 12:51     ` martin rudalics
2009-12-23  0:45     ` Stefan Monnier
2009-12-23  9:07       ` David Kastrup
2009-12-24  4:35         ` Stefan Monnier
2009-12-24  9:03           ` David Kastrup
2009-12-29 16:01             ` Stefan Monnier [this message]
2010-01-04  9:09               ` Drew Adams
2010-01-04 18:30                 ` Stefan Monnier
2010-01-05 20:17                   ` David Kastrup
2010-01-06  0:02                     ` Drew Adams
2010-01-06  4:20                       ` Stefan Monnier
2010-01-06  8:07                         ` David Kastrup
2010-01-06  8:57                           ` Drew Adams
2010-01-10  4:57                             ` Stefan Monnier
2010-01-10  8:12                               ` David Kastrup
2010-01-10 21:43                                 ` Stefan Monnier
2010-01-11  8:24                                   ` David Kastrup
2010-01-11  9:21                                     ` martin rudalics
2010-01-11 16:50                                       ` Stefan Monnier
2010-01-10 17:03                               ` Drew Adams
2010-01-10  4:51                           ` Stefan Monnier
2010-01-10 15:58                         ` Harald Hanche-Olsen
2010-01-10 18:05                           ` martin rudalics
2010-01-10 18:06                           ` Drew Adams
2010-01-10 19:44                             ` Harald Hanche-Olsen
2009-12-24 14:04   ` Roland Winkler
2010-01-04 17:08   ` Davis Herring
2010-01-04 17:34     ` David Kastrup
2010-01-04 18:33     ` Stefan Monnier
  -- strict thread matches above, loose matches on Subject: below --
2009-12-18  9:20 Eli Zaretskii
2009-12-18 15:29 ` Juanma Barranquero
2009-12-18 15:58   ` Thierry Volpiatto

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