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Re: (interactive "r") and (use-region-p)

From: Andreas Röhler
Subject: Re: (interactive "r") and (use-region-p)
Date: Fri, 17 Mar 2017 09:16:32 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101 Icedove/45.6.0

On 16.03.2017 19:31, Ingo Lohmar wrote:
On Thu, Mar 16 2017 13:20 (-0400), Sam Steingold wrote:
--8<---------------cut here---------------start------------->8---
(defun my-command (beg end)
  (interactive "r")
  (if (use-region-p)
      (my-command-region beg end)
--8<---------------cut here---------------end--------------->8---
Hi Sam,

AFAIK, you cannot use the (interactive "r") form for this "dwim-ish"
kind of behavior.

Why that? If a region is set, why should (use-region-p) fail?

The answer is: there are contradictions in implementation.
Which was discussed at time.

Thanks Sam for showing that.

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