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Re: interactive codes "p" and "P" - bug or mistake

From: Andreas Röhler
Subject: Re: interactive codes "p" and "P" - bug or mistake
Date: Tue, 26 Jul 2011 19:00:06 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; de; rv: Gecko/20110616 SUSE/3.1.11 Thunderbird/3.1.11

Am 26.07.2011 18:42, schrieb Teemu Likonen:
* 2011-07-26T18:19:53+02:00 * Andreas Röhler wrote:

given that function:

(defun foo-bar (foo&optional bar)
   (interactive "p\nP*")
   (message "foo %s bar %s" foo bar))

I'm not sure what you think is wrong or unexpected there. I suggest
reading info pages

     (info "(elisp) Prefix Command Arguments")
     (info "(elisp) Interactive codes")

Note the difference between "raw" and "numeric" prefix argument.

Thanks Drews and Teemu,

think I know the docu, maybe I didn't understood it correctly.

IMO the code "p" sends the numerical argument, while "P" the Prefix value introduced with C-u

So if I do M-NUMBER, "P" should send nothing.
whilst C-u M-command

both should send their defaults, ie "p" 1 and "P" (4)




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