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From: Per Abrahamsen <abraham@dina.kvl.dk>
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Subject: Re: Buttonize man page links
Date: Mon, 09 Sep 2002 16:16:40 +0200
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Simon Josefsson <jas@extundo.com> writes:

> But Customize behaves rather weird on it, when I mouse-2 to change it
> to woman it works, but when I mouse-2 and select man again, nothing
> happens.  Is the :type bad?

Yes, use function-item instead of function for consts.

(defcustom gnus-button-man-handler 'man
  "Function to use for displaying man pages.
The function must take at least one argument with a string naming the
man page."
  :type '(choice (function-item :tag "Man" man)
		 (function-item :tag "Woman" woman)
		 (function :tag "Other"))
  :group 'gnus-article-buttons)

> I like it.  But maybe there should be some policy, I have a feeling we
> are beginning to add a gazillion buttons.  Maybe things will get slow.
> Do people care?  Opinions?

We might want button types specific for groups whose name match some
regexp.