bug#13749: 24.2; intermittent set-frame-width issue

[montuori]

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Please write in English if possible, as the Emacs maintainers
usually do not have translators for other languages.

Please describe exactly what actions triggered the bug, and
the precise symptoms of the bug.  If you can, give a recipe
starting from `emacs -Q':

A small function I've been using forever:

(defun resize-frame () 
  (interactive) 
  (set-frame-width (selected-frame) 80))

has stopped working as I would expect.  Here's the behavior I see:

  Assume two frames, A and B, both with frame-width 100
 
  - resize-frame while A is the selected-frame and the frame resizes
    to 80 as expected;

  - drag the frame A width back to 100 with the mouse, resize-frame,
    and there's no change: selected-frame is correct and frame-width
    reports 100;

  - make frame B the selected-frame, resize-frame, and the frame
    resizes to 80 as expected;

  - now make frame A the selected-frame; resize-frame; and the frame
    resizes to 80 as expected.
  
It's entirely possible I've made a misassumption about something but
I'd swear this function has been working in prior releases.

Thanks for your time!

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please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
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In GNU Emacs 24.2.1 (x86_64-apple-darwin, NS apple-appkit-1038.36)
 of 2012-08-27 on bob.porkrind.org
Windowing system distributor `Apple', version 10.3.1187
Configured using:
 `configure '--host=x86_64-apple-darwin' '--build=i686-apple-darwin'
 '--with-ns' 'build_alias=i686-apple-darwin'
 'host_alias=x86_64-apple-darwin' 'CC=gcc -mmacosx-version-min=10.5''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default enable-multibyte-characters: t

Major mode: Apropos

Minor modes in effect:
  erc-list-mode: t
  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-ring-mode: t
  erc-networks-mode: t
  erc-pcomplete-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-match-mode: t
  erc-button-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-netsplit-mode: t
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  recentf-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  iswitchb-mode: t
  jabber-activity-mode: t
  show-paren-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <down-mouse-1> <help-echo> <mouse-movement> 
<mouse-1> <help-echo> <help-echo> <down-mouse-1> <mouse-1> 
<help-echo> <help-echo> <help-echo> <down-mouse-1> 
<mouse-1> <wheel-down> <double-wheel-down> <triple-wheel-down> 
<help-echo> <down-mouse-1> <mouse-1> <help-echo> <down-mouse-1> 
<mouse-1> <help-echo> <help-echo> <down-mouse-1> <help-echo> 
<mouse-movement> <drag-mouse-1> <help-echo> <down-mouse-1> 
<mouse-1> <help-echo> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> r e 
d o r a n g e <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
o r a n g e r e d 3 <backspace> 1 <backspace> 2 <backspace> 
3 <backspace> 4 <backspace> 1 <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> g r e e n 2 3 <backspace> 
<backspace> 3 <backspace> 4 <help-echo> <help-echo> 
<help-echo> <down-mouse-1> <help-echo> <down-mouse-1> 
<switch-frame> <switch-frame> <switch-frame> <switch-frame> 
<switch-frame> <wheel-down> <double-wheel-down> <triple-wheel-down> 
<triple-wheel-down> <triple-wheel-down> <switch-frame> 
<switch-frame> <switch-frame> <help-echo> <down-mouse-1> 
<drag-mouse-1> C-x w <down-mouse-1> <mouse-1> C-x w 
C-g C-g C-g C-g <switch-frame> C-x b . e m <return> 
<return> ( f r a m e - w i d t h ) C-x C-e <up> C-e 
C-x C-e <down> C-x C-e <down-mouse-1> <wheel-up> <double-wheel-up> 
<triple-wheel-up> <triple-wheel-up> <triple-wheel-up> 
<triple-wheel-up> <down-mouse-1> <mouse-movement> <mouse-1> 
C-x C-e <down-mouse-1> <mouse-1> C-x C-e <down-mouse-1> 
<mouse-1> C-x C-e <down-mouse-1> <mouse-1> C-x C-e 
<switch-frame> <switch-frame> <down> C-x C-e <up> C-e 
C-x C-e <switch-frame> C-x C-e <down-mouse-1> <mouse-movement> 
<mouse-1> C-x 1 C-x w <switch-frame> C-x w <down-mouse-1> 
<mouse-movement> <mouse-1> C-a C-SPC <C-up> <down> 
<down> C-w <down> <up> C-SPC <down> C-w <tab> <down> 
<tab> M-^ <C-right> <C-right> <C-right> <C-left> <left> 
<return> <tab> C-e C-x C-e C-x C-s C-g C-g C-g C-g 
<down> <down> C-x C-e <down-mouse-1> <mouse-1> <down-mouse-1> 
<mouse-1> C-x C-e <down-mouse-1> <mouse-1> C-x C-e 
C-x C-e <up> C-e C-x C-e <down> C-x C-e <up> C-e C-x 
C-e M-x m x - C-g C-g <switch-frame> <help-echo> M-x 
r e p o r t - e m a c s - b u g <return>

Recent messages:
114 (#o162, #x72, ?r)
nil
114
nil
Quit
Quit

Load-path shadows:
/Users/montuori/elisp/EmacsApp/g-client/json hides 
/Applications/Emacs.app/Contents/Resources/lisp/json
/Users/montuori/elisp/EmacsApp/cperl-mode hides 
/Applications/Emacs.app/Contents/Resources/lisp/progmodes/cperl-mode

Features:
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esh-proc esh-arg eldoc help-fns esh-groups eshell esh-module esh-mode
esh-util server time-date tooltip ediff-hook vc-hooks lisp-float-type
mwheel ns-win tool-bar dnd fontset image fringe lisp-mode register
page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer
loaddefs button faces cus-face files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process ns multi-tty
emacs)
-- 
  kevin montuori
  montuori@gmail.com