GNU bug report logs - #3689
window-fixed-size behaviour

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Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: hjuvi <hjuvi-google <at> yahoo.fr>
To: bug-gnu-emacs <at> gnu.org
Subject: window-fixed-size behaviour
Date: Fri, 26 Jun 2009 14:44:18 +0000 (GMT)

Changing from emacs21 (GNU Emacs 21.4.1) to emacs22-gtk (GNU Emacs 22.1.1) (on Ubuntu desktop), I'm no longer able to have window-size-fixed work properly - or at least how I expect it to work.


I've been using it to have a window with fixed size in the middle of the frame.

On emacs21, I can change the size of other windows, this particular one moves up and down but always keep the same height. This is how I expect it to work...

On emacs22, if I drag from the upper side (mode-line) of the window, it enlarges (which should not happen). If I drag from the lower side of the window, it doesn't move at all !...


Why is the behaviour different between emacs21 and emacs22 ?
The behaviour on emacs21 matches with my needs (and with the idea of window-size-fixed, I believe), whereas I cannot get it work properly on emacs22.


Below is some lisp code to show the problem : you can put it in a file test.el, and call : emacs -q -l test.el


(setq inhibit-startup-message t) 
(split-window-vertically) 
(split-window-vertically) 
(split-window-horizontally) 
(switch-to-buffer (get-buffer-create "buffer1")) 
(select-window (next-window)) 
(switch-to-buffer (get-buffer-create "buffer2")) 
(select-window (next-window)) 
(switch-to-buffer (get-buffer-create "buffer3")) 
(select-window (next-window)) 
(switch-to-buffer (get-buffer-create "buffer4")) 
(select-window (previous-window)) 
(enlarge-window (- 5 (window-height))) 
(setq window-size-fixed t) 

"buffer3" window is supposed to have fixed size. 


NB : This problem has been discussed here :
http://groups.google.fr/group/gnu.emacs.help/browse_thread/thread/20a054c3e179909d?hl=fr#

It has been suggested that my problem might have appeared with the introduction of function adjust-window-trailing-edge.

Message #10 received at 3689 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Vincent Belaïche <vincent.b.1 <at> hotmail.fr>
To: 3689 <at> debbugs.gnu.org
Cc: martin rudalics <rudalics <at> gmx.at>
Subject: Re: Problem with window-size-fixed
Date: Wed, 19 Aug 2009 20:35:58 +0200

Dear EMACS experts,

A problem concerning window-size-fixed was reported on
newsgroupfr.comp.applications.emacs
(http://groups.google.fr/group/fr.comp.applications.emacs/browse_thread/thread/f617026a5906fcd3#)

To see the problem put the following code into a file test.el and launch
emacs with: emacs -q -l test.el

;----------------------------------------------
(setq inhibit-startup-message t) 
(split-window-vertically) 
(split-window-vertically) 
(split-window-horizontally) 
(switch-to-buffer (get-buffer-create "buffer1")) 
(select-window (next-window)) 
(switch-to-buffer (get-buffer-create "buffer2")) 
(select-window (next-window)) 
(switch-to-buffer (get-buffer-create "buffer3")) 
(select-window (next-window)) 
(switch-to-buffer (get-buffer-create "buffer4")) 
(select-window (previous-window)) 
(enlarge-window (- 5 (window-height))) 
(setq window-size-fixed t)
;----------------------------------------------

I have tested this with the very latest CVS version GNU Emacs 23.1.50.1
(i386-mingw-nt5.0.2195) of 2009-07-25 and the same problem happens.

So what happens is that I correctly get the following window
partitionning:

Buffer 1 | Buffer 2 
---------+--------- 
  Buffer 3 
------------------- 
  Buffer 4 
------------------- 

with buf 1 and 2 of 7 rows, buf 3 of 4 rows, and buf 4 taking the
remainder (that is 38 rows for me).  The issue is that buffer 3 is
supposed to be fixed-size. This is true if you use `C-u N C-x ^' for
re-dimensionning, but it is not true if you try to do it by mouse, in
that case buffer 4 is fixed-size instead.

Best regards,
    Vincent.

Message #15 received at 3689-done <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: 3689-done <at> debbugs.gnu.org
Subject: Re: bug#3689: window-fixed-size behaviour
Date: Mon, 05 Sep 2011 10:30:18 +0200

> It has been suggested that my problem might have appeared with the introduction of function adjust-window-trailing-edge.

Should be fixed in current trunk.

martin

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