bug#7946: Referring to a marker changes Emacs' behaviour.

[Deniz Dogan]

2011/1/31 Le Wang <l26wang@gmail.com>:
> Hi,
> I found an issue where evaluating this line or not causes Emacs behaviour
> change:
>
> (format "%s" marked-point)
>
> "marked-point" is a marker.  The bug was found on NTEmacs 23.2.1, reproed on
> CVS NTEmacs 20110111, and Stephen Berman confirmed it on GNU Emacs 24.0.50.1
> (i686-pc-linux-gnu, GTK+ Version 2.20.1) of 2011-01-13 on escher
> "rebox2_bug.el" is attached to this message.
> Repro-steps:
>
> emacs -Q rebox2_bug.el
> M-x eval-current-buffer
> C-x b<enter> ;; switch to "*scratch*"
> M-x rebox-mode
> M-<
> SPC,SPC ;; space twice
> C-aC-aC-aC-a ;; notice that the point is stuck at 6
> C-xb<enter> ;; switch to "rebox2_bug.el
> M-g g 1714
> C-d ;; uncomment the hack workaround the bug
> C-M-x ;; reevaluated the function
> C-x b<enter> ;; switch to "*scratch*"
> C-aC-aC-aC-a ;; notice that the cursor switches between 1 and 6
>
> --
> Le
>

I was unable to reproduce this. At both of the "C-a C-a C-a" steps, it
switches between 1 and 4 (or 0 and 3 rather).

-- 
Deniz Dogan