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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Arbitrary function: find the number(s) of expected arguments
Date: Sat, 19 Mar 2016 22:33:46 +0200
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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In-reply-to: <jwvmvpu1c35.fsf-monnier+gmane.emacs.devel@gnu.org> (message from
	Stefan Monnier on Sat, 19 Mar 2016 15:52:45 -0400)
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> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Sat, 19 Mar 2016 15:52:45 -0400
> 
> > Patches to add func-arity to Emacs are welcome.
> 
> Actually, I don't welcome them.  I always resisted them, because I think
> that using func-arity is a bad idea.

I don't see why would that be such a bad idea that it justifies
rejecting a patch.