GNU bug report logs - #8865
24.0.50; `display-buffer' does not respect `pop-up-frames'

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: "Drew Adams" <drew.adams <at> oracle.com>
Subject: bug#8865: closed (Re: bug#8865: 24.0.50; `display-buffer' does
 not respect `pop-up-frames')
Date: Thu, 16 Jun 2011 08:46:02 +0000

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Your bug report

#8865: 24.0.50; `display-buffer' does not respect `pop-up-frames'

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 8865 <at> debbugs.gnu.org.

-- 
8865: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8865
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: martin rudalics <rudalics <at> gmx.at>
To: 8865-done <at> debbugs.gnu.org
Subject: Re: bug#8865: 24.0.50;
	`display-buffer' does not respect `pop-up-frames'
Date: Thu, 16 Jun 2011 10:45:13 +0200

Fixed on trunk in revision 104603.

martin

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From: "Drew Adams" <drew.adams <at> oracle.com>
To: <bug-gnu-emacs <at> gnu.org>
Subject: 24.0.50; `display-buffer' does not respect `pop-up-frames'
Date: Tue, 14 Jun 2011 11:14:07 -0700

My setup, not emacs -Q.

Summary: A non-interactive call to `display-buffer' with non-nil arg
NOT-THIS-WINDOW does not show the buffer in a separate frame, even though
`pop-up-frames' is non-nil.
 
I have non-nil `pop-up-frames'.  I use the following function via `M-x
find-library-other-window frame.el'.  It should find the library in a
separate frame.  Instead, it finds it in another window of the current
frame - i.e., it splits the current window and puts it in one of those
two windows.
 
(defun find-library-other-window (library)
  "Find the Emacs-Lisp source of LIBRARY in another window."
  (interactive
   (let* ((path (cons (or find-function-source-path load-path)
        (find-library-suffixes)))
   (def (if (eq (function-called-at-point) 'require)
     (save-excursion (backward-up-list)
                                   (forward-char)
                                   (backward-sexp -2)
                                   (thing-at-point 'symbol))
   (thing-at-point 'symbol))))
     (when def (setq def (and (locate-file-completion def path 'test) def)))
     (list (completing-read "Library name: " 'locate-file-completion
                            path nil nil nil def))))
  (let ((buf (find-file-noselect (find-library-name library))))
    (pop-to-buffer buf 'other-window)))
 
Invoking `M-x find-library-other-window frame.el' leads to the following
call chain (from the debugger):
 
(display-buffer #<buffer frame.el> other-window nil)
 
(display-buffer-normalize-specifiers "frame.el" other-window nil)
returns the following sexp, which I'll call FOO below:
 
((reuse-window other same visible)
 (pop-up-window (largest) (lru))
 (pop-up-frame)
 (reuse-window other other visible)
 (reuse-window nil same 0)
 (reuse-window-even-sizes . t)
 (pop-up-frame t)
 (pop-up-frame-function lambda nil (make-frame pop-up-frame-alist))
 (reuse-window nil same visible)
 (pop-up-window (largest) (lru))
 (pop-up-frame)
 (reuse-window nil other visible)
 (reuse-window-even-sizes . t)
 (reuse-window nil same visible)
 (pop-up-window (largest) (lru))
 (pop-up-frame)
 (pop-up-frame-alist (height . 24) (width . 80) (unsplittable . t))
 (reuse-window nil other visible)
 (reuse-window-even-sizes . t))
 
Then, * display-buffer-reuse-window(
#<buffer frame.el> 
(other same visible)
FOO)
 
returns: nil
 
Then, * display-buffer-pop-up-window(
#<buffer frame.el>
((largest) (lru))
FOO)
 
calls * display-buffer-split-window(
#<window 8 on drews-lisp-20> 
nil
FOO)
 
which calls * display-buffer-split-window-1(
#<window 8 on drews-lisp-20> below 4)
 
which calls * split-window(
#<window 8 on drews-lisp-20> nil below)
 
which calls * resize-this-window(
#<window 8 on drews-lisp-20> -29 nil)
 
which calls * split-window-internal(
#<window 8 on drews-lisp-20> 29 below 0.5)
 
which splits the window and then throws, putting the frame.el buffer in
the second window (instead of its own frame).
 
 
 

In GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600)
 of 2011-06-13 on 3249CTO
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (4.5) --no-opt --cflags
-Ic:/build/include'
 

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