bug#1480: debug-on-error docstring doesn't mentiontoggle-debug-on-error

[richardeng]

Do you mean it's better to add more description link in doc? Following is one 
of your requests.
But, I think it maybe not good to provide a command function link in C level.
And, this should be a minor/wishlist bug.

--- eval.c.~1.307.~     2008-08-27 13:26:39.000000000 -0700                     
                               
+++ eval.c      2008-11-03 04:54:52.000000000 -0800                             
                               
@@ -3666,7 +3666,7 @@
 if one of its condition symbols appears in the list.                           
                               
 When you evaluate an expression interactively, this variable                   
                               
 is temporarily non-nil if `eval-expression-debug-on-error' is non-nil.         
                               
-See also variable `debug-on-quit'.  */);                                       
                               
+See also variable `debug-on-quit'. Use `toggle-debug-on-error' to toggle it. 
*/);                         
   Vdebug_on_error = Qnil;                                                      
                               
                                                                                
                               
   DEFVAR_LISP ("debug-ignored-errors", &Vdebug_ignored_errors,