Hi, I spend a considerable time to track down the following bug.
Whenever I enable debug-on-error when running VM I get a backtrace with the following content: ,------------------------------------------ | Debugger entered--Lisp error: (void-function nil) | (nil) `------------------------------------------ This is the WHOLE backtrace, well sometimes it is longer, but never helpful! See also the discussion in gnu.emacs.help (many thanks to Tim X) on 'How to debug "Debugger entered--Lisp error: (void-function nil)"' at http://tinyurl.com/2uavle. It was caused by a wrong toolbar item spec for the prop :button and can be reproduced with GNU Emacs 22.0.92.1 and 21.4.1 on Debian when adding the following to ~/.emacs: (setq debug-on-error t) (tool-bar-add-item "help" 'error 'buglet ':button '(:toggle nil) ':help "(void-function nil) buglet") I am not sure how the backtrace should look like, but something like ,------------------------------------------ | Debugger entered--Lisp error: (void-function nil) | (nil) | (tool-bar-redisplay) | ... `------------------------------------------ Would have saved me some days. Robert. _______________________________________________ emacs-pretest-bug mailing list emacs-pretest-bug@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-pretest-bug