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From: Richard Riley <rileyrgdev@googlemail.com>
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Subject: Re: Writing Emacs-function: how?
Date: Tue, 21 Apr 2009 14:04:21 +0200
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Ulrich Scholz <d7@thispla.net> writes:

> I try to write an Emacs function and bind it to a key.  My first try
> is given below.  But I get the error
> "Wrong type argument: commandp, my-replace"
>
> I tried several versions but none worked.  Could you give me a correct
> version. Thanks.
>
> BTW, the function should replace all occurences of the string "<DF>"
> by "ß" in the current buffer.
>
> (defun my-replace nil "doc-string"
>   (while (re-search-forward "<DF>" nil t)
>     (replace-match "ß" nil nil)))
>
> (global-set-key [f7] 'my-replace)
>

Look up use of

  (interactive)

r.