ediff-quit wrong type arg error in balance-windows

[Drew Adams]

This isn't much of a bug report, but perhaps it will help.

I sometimes get this error when I quit ediff. I use a standalone
minibuffer and pop-up-frames = t. I use these ediff settings:

    (setq-default ediff-ignore-similar-regions t)
    (setq-default ediff-auto-refine-limit 10000)
    (setq ediff-grab-mouse 'maybe)

The buffers I compare (with `ediff-buffers') are in separate
frames. The ediff control panel is in a separate (tiny) frame.

Here is the backtrace I get:

Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
  balance-windows()
  ediff-cleanup-mess()
  run-hooks(ediff-quit-hook)
  ediff-really-quit(nil)
  ediff-quit(nil)
  call-interactively(ediff-quit)

HTH.



In GNU Emacs 22.0.50.1 (i386-msvc-nt5.1.2600)
 of 2006-07-19 on BOS-CTHEWLAP2
X server distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-msvc (12.00)'

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: ENU
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  eldoc-mode: t
  display-time-mode: t
  recentf-mode: t
  icomplete-mode: t
  tool-bar-pop-up-mode: t
  icicle-mode: t
  minibuffer-indicate-depth-mode: t
  delete-selection-mode: t
  show-paren-mode: t
  encoded-kbd-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
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  size-indication-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
l e t i o n SPC c a n d d i <backspace> <backspace> 
i d a t e . C-x = C-a <right> <right> <right> <right> 
<right> C-x C-s <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-3> <mouse-3> M-w <down-mouse-1> 
<mouse-1> C-r ^ ^ ^ <down-mouse-1> <mouse-1> <return> 
; ; SPC SPC SPC SPC SPC A d d e d : SPC C-y . <down-mouse-1> 
<mouse-1> <double-down-mouse-1> <double-mouse-1> <triple-down-mouse-1> 
<triple-mouse-1> <backspace> C-x C-s <switch-frame> 
<down-mouse-1> <mouse-1> q y <switch-frame> <switch-frame> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <switch-frame> <switch-frame> 
<help-echo> <switch-frame> <help-echo> <help-echo> 
<switch-frame> <switch-frame> <help-echo> <help-echo> 
<help-echo> <menu-bar> <help-menu> <report-emacs-b
ug>

Recent messages:
Char: " (34, #o42, #x22) point=250561 of 251786 (100%) column=75
Saving file c:/drews-lisp-20/icicles-cmd.el...
Wrote c:/drews-lisp-20/icicles-cmd.el
Mark saved where search started
Mark set
Saving file c:/drews-lisp-20/icicles-cmd.el...
Wrote c:/drews-lisp-20/icicles-cmd.el
Quit this Ediff session? (y or n) 
Entering debugger...
Loading emacsbug...done