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From: "Stefan Monnier" <monnier+gnu.emacs.help/news/@flint.cs.yale.edu>
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Subject: Re: How to make a command ask "You *really* want to do this?"
Date: 30 Apr 2003 18:50:29 -0400
Organization: Yale University
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>>>>> "Heinz" == Heinz Rommerskirchen <Heinrich.Rommerskirchen@siemens.com> writes:
> Years ago I copied the following from the usenet into my .emacs
> (setq kill-emacs-query-functions
>       (cons (lambda () (yes-or-no-p "Really kill Emacs? "))
> 	    kill-emacs-query-functions))

The proper way to write it nowadays is:

  (add-hook 'kill-emacs-query-functions
            (lambda () (yes-or-no-p "Really kill Emacs? ")))


-- Stefan