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bug#14486: 24.3.50; A very subtle/obscure bug - with-temp-buffer + pop-t
From: |
Jambunathan K |
Subject: |
bug#14486: 24.3.50; A very subtle/obscure bug - with-temp-buffer + pop-to-buffer + insert |
Date: |
Tue, 28 May 2013 08:16:41 +0530 |
A very subtle/obscure bug. I have a hard time explaining the observed
behaviour.
1. emacs -Q
2. In the scratch buffer copy the following snippet and install it.
(defvar count 1)
(defun testing ()
(interactive)
(forward-line 1)
(insert (with-temp-buffer
(insert (format "string-%d\n" (setq count (+ 1 count))))
(pop-to-buffer (current-buffer))
(buffer-string))))
3. M->
4. M-x testing
C-x o
M-x testing
C-x o
M-x testing
C-x o
5. Expected behaviour: Point should be at the END of the scratch buffer
Observed behaviour: Not as expected.
Now comment out the `pop-to-buffer' in the snippet above, install the
changes and repeat. You will see that the point is at END of the
scratch buffer.
In GNU Emacs 24.3.50.3 (i686-pc-linux-gnu, GTK+ Version 2.20.1)
of 2013-05-27 on debian-6.05
Bzr revision: 112737 monnier@iro.umontreal.ca-20130527010843-s4qzq34vq5x532aj
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
Important settings:
value of $LANG: en_IN
locale-coding-system: iso-latin-1-unix
default enable-multibyte-characters: t
- bug#14486: 24.3.50; A very subtle/obscure bug - with-temp-buffer + pop-to-buffer + insert,
Jambunathan K <=