bug#23320: 25.0.92; Window width not updated after frame resize (Win32 and GTK)

[Anders Lindgren <andlind@gmail.com>]

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Hi!

I noticed a regression on 25.0.92 compared to 24.5 where the following code
behaves differently on the w32 port. (On a recent GTK build it also
misbehaves, but not under the NS port.)

    (progn
      (set-frame-size (selected-frame) 1000 400 t)
      (window-width nil t))

On 24.5, this evaluates to "1000". However, on 25.0.92 `window-width'
returns the width prior to the frame resize. (Evaluating it a second time
returns 1000, though.)

Adding `(sit-for 0)' before the call to `window-width' make is return 1000
the first time, but it doesn't feel like a robust solution.

Is this the expected behavior? If it is, is adding `(sit-for 0)' the
recommended way to get the correct window width after a frame resize?

    -- Anders Lindgren


In GNU Emacs 25.0.92.1 (i686-w64-mingw32)
 of 2016-03-21 built on LAPHROAIG
Windowing system distributor 'Microsoft Corp.', version 6.1.7601
Configured using:
 'configure --host=i686-w64-mingw32 --without-dbus
 --without-compress-install CFLAGS=-static'

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS

Important settings:
  value of $LANG: SVE
  locale-coding-system: cp1252

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-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 messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:
None found.

Features:
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rfc2045 ietf-drums mm-util help-fns help-mode easymenu cl-loaddefs pcase
cl-lib mail-prsvr mail-utils time-date mule-util tooltip eldoc electric
uniquify ediff-hook vc-hooks lisp-float-type mwheel dos-w32 ls-lisp
disp-table w32-win w32-vars term/common-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cl-generic cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese charscript case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer cl-preloaded nadvice
loaddefs button faces cus-face macroexp files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote w32notify w32 multi-tty
make-network-process emacs)

Memory information:
((conses 8 89463 5796)
 (symbols 32 19588 0)
 (miscs 32 44 151)
 (strings 16 15873 4098)
 (string-bytes 1 434746)
 (vectors 8 12347)
 (vector-slots 4 429150 3960)
 (floats 8 165 156)
 (intervals 28 259 49)
 (buffers 520 12))

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