Problems with custom configuration file (.gnu-emacs-custom)

[Dmitry Pankratov]

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In GNU Emacs 21.2.1 (i586-suse-linux, X toolkit, Xaw3d scroll bars)
 of 2002-09-11 on amdsimb
configured using `configure '--with-gcc' '--with-pop' '--with-system-malloc' 
'--prefix=/usr' '--exec-prefix=/usr' '--infodir=/usr/share/info' 
'--mandir=/usr/share/man' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' 
'--with-x' '--with-xpm' '--with-jpeg' '--with-tiff' '--with-gif' '--with-png' 
'--with-x-toolkit=lucid' '--x-includes=/usr/X11R6/include' 
'--x-libraries=/usr/X11R6/lib' 'i586-suse-linux' 'CC=gcc' 'CFLAGS=-O2 
-march=i586 -mcpu=i686 -fmessage-length=0 -pipe       
-DSYSTEM_PURESIZE_EXTRA=25000   -DSITELOAD_PURESIZE_EXTRA=10000         
-D_GNU_SOURCE ' 'LDFLAGS=-s' 'build_alias=i586-suse-linux' 
'host_alias=i586-suse-linux' 'target_alias=i586-suse-linux''
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: POSIX
  value of $LC_CTYPE: ru_RU.KOI8-R
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US
  locale-coding-system: cyrillic-koi8
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

When using custom configuration file, (setq custom-file
"~/.gnu-emacs-custom"), menu-bar-options-save throws unbalanced parentheses
error if c-mode, c++-mode or pascal-mode is active. However, in other modes
(text, lisp, ada for instance), no such error displayed and options are saved
to the custom file. After first saving options in these modes, problem does not
occur anymore in c, c++ and pascal modes.  

Recent input:
ESC x r e p o r t - e m a c s - b u g RET

Recent messages:
(emacs)
Loading /usr/lib/emacs/21.2/i586-suse-linux/fns-21.2.1.el (source)...done
Loading mule-util...done
Loading regexp-opt...done
Loading mwheel...done
For information about the GNU Project and its goals, type C-h C-p.
Loading emacsbug...done