GNU bug report logs - #6712
24.0.50; `customize-rogue' error: Symbol's value as variable is void

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "Drew Adams" <drew.adams <at> oracle.com>
To: <bug-gnu-emacs <at> gnu.org>
Subject: 24.0.50; `customize-rogue' error: Symbol's value as variable is void
Date: Thu, 22 Jul 2010 15:28:56 -0700

emacs -Q
 
Eval this:
 
(defcustom foo 'start
  ""
  :type '(choice  (const start) (const end))
  :group 'foobar)
 
M-x customize-option foo
 
1. Use the Value Menu to change the value to `end'.
2. Use the State menu to `Set for current session' (value is `end').
3. Use the State menu to `Set to Backup Value' (value is `start').
4. M-x customize-rogue
 
This error message appears:
 
"Symbol's value as variable is void: start"
 
The problem is the call to `eval' here:
 
(when (and cval ;Declared with defcustom.
           (default-boundp symbol) ;Has a value.
           (not (equal (eval (car cval)) ; <==============
                       ;; Which does not match customize.
                       (default-value symbol))))
  (push (list symbol 'custom-variable) found))
 
The sexp that is the arg to `eval' is `(start)'.


 
In GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600)
 of 2010-07-19 on 3249CTO
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (4.4) --no-opt --cflags -Ic:/xpm/include'
 

Message #8 received at 6712 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> gnu.org>
To: "Drew Adams" <drew.adams <at> oracle.com>
Cc: 6712 <at> debbugs.gnu.org
Subject: Re: bug#6712: 24.0.50;
	`customize-rogue' error: Symbol's value as variable is void
Date: Sun, 05 Feb 2012 23:51:20 +0800

"Drew Adams" <drew.adams <at> oracle.com> writes:

> (defcustom foo 'start
>   ""
>   :type '(choice  (const start) (const end))
>   :group 'foobar)
>  
> M-x customize-option foo
>  
> 1. Use the Value Menu to change the value to `end'.
> 2. Use the State menu to `Set for current session' (value is `end').
> 3. Use the State menu to `Set to Backup Value' (value is `start').
> 4. M-x customize-rogue
>  
> This error message appears:
>  
> "Symbol's value as variable is void: start"

Fixed; thanks for the report.

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