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From: David Kastrup <dak@gnu.org>
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Subject: Re: Elisp:  Simple function to Add Two Numbers
Date: Mon, 28 Aug 2006 00:12:17 +0200
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Edward Dodge <user@foo.bar> writes:

> Please,
>
> Why do I get "wrong number of arguments" every time I try to run this simple,
> straight-forward code?
>
> (defun ekd-average (jabba wabba)
>   "Adds two numbers and returns the sum."
>   (interactive "nFirstvar: \nn Secondvar: \nr")
>      ( + jabba wabba))

Because the arguments would need to be
(jabba wabba region-start region-end)

You are aware what the final "r" in your interactive spec means?

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum