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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Juanma Barranquero <lekktu@gmail.com>
Cc: Markus Rost <rost@math.uni-bielefeld.de>,
	4655@emacsbugs.donarmstrong.com
Subject: bug#4655: 23.1.50; buffer-swap-text oddity
Date: Wed, 07 Oct 2009 01:41:40 -0400	[thread overview]
Message-ID: <jwvtyybbw8f.fsf-monnier+emacsbugreports@gnu.org> (raw)
In-Reply-To: <f7ccd24b0910062101od9f731bj83898ab3102331cb@mail.gmail.com> (Juanma Barranquero's message of "Wed, 7 Oct 2009 06:01:22 +0200")

> Why do you expect buffer-swap-text to switch the current buffer?

I'm not sure he expects it.  And if he does, I can't tell you why, so
I'll pass.

> And, why it is doing it?

I don't think it does when not called within save-excursion.
But when called within the save-excursion, the reason is simple:

1- markers are swapped along with the buffer texts (with a some
   exceptions, mostly window-markers).
2- save-excursion saves the "position and current buffer" as a marker.

Combine 1 and 2 together, and you'll see that save-excursion ends up
changing the current buffer.


        Stefan





  reply	other threads:[~2009-10-07  5:41 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <jwv3a2eiia3.fsf-monnier+emacs@gnu.org>
2009-10-06 18:46 ` bug#4655: 23.1.50; buffer-swap-text oddity Markus Rost
2009-10-07  4:01   ` Juanma Barranquero
2009-10-07  5:41     ` Stefan Monnier [this message]
2009-10-07  8:53       ` Markus Rost
2009-10-07 10:07       ` Juanma Barranquero
2009-10-07 14:29         ` Stefan Monnier
2009-10-08 16:48           ` Markus Rost
2011-07-13 14:08           ` Lars Magne Ingebrigtsen
2016-07-11  1:58             ` npostavs
2016-07-11 14:37               ` Eli Zaretskii
2016-07-11 18:50                 ` Markus Rost
2016-07-11 19:07                   ` Dmitry Gutov
2016-07-12  1:58                     ` npostavs
2016-07-12  5:16                       ` Eli Zaretskii
2016-07-13 23:50                         ` npostavs
2016-07-14 15:03                           ` Eli Zaretskii
2016-07-15  0:05                             ` npostavs
2010-01-10  7:36   ` bug#5273: marked as done (23.1; format-alist encode vs write-region-post-annotation-function) Emacs bug Tracking System
2010-01-13  0:45   ` bug#5256: marked as done (conjunct formation should follow input sequence when inserting text) Emacs bug Tracking System
2010-01-13  0:49   ` bug#5265: marked as done (23.1.90; vc - can't reread redirected stdin for log message) Emacs bug Tracking System
2010-01-14  1:22   ` bug#5276: marked as done (23.1; Doc string of bookmark-bmenu-execute-deletions) Emacs bug Tracking System
2010-01-16 20:05   ` bug#5267: 23.1; doc string of defstruct Chong Yidong
2010-01-16 21:39   ` bug#5279: 23.1; VC: should set LC_MESSAGES to C (with patch) Chong Yidong
2010-05-13 19:20   ` bug#5284: 23.1; gnus-summary-expire-thread does not work Glenn Morris
2010-05-24 19:53   ` bug#5270: [PATCH] * lisp/image-dired.el (image-dired-dired-insert-marked-thumbs) Insert thumbnails before file names of marked files in the dired buffer Thierry Volpiatto
2010-05-25 15:49     ` Juri Linkov
2010-05-25 16:59       ` Thierry Volpiatto
2010-05-25 17:46         ` Juri Linkov
2010-06-30 20:35   ` bug#5281: 23.1; xml-parse-region causes infinite loops if the region is not well-formed XML Chong Yidong
2009-12-29 18:19 bug#5284: 23.1; gnus-summary-expire-thread does not work Tom Tromey
2010-05-11  6:04 ` Andreas Seltenreich
     [not found]   ` <mailman.7.1273778942.8369.bug-gnu-emacs@gnu.org>
2010-06-30 21:35     ` Ted Zlatanov

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