From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: cc-mode: Make all parameters introduced in Emacs 26 optional
Date: Mon, 12 Mar 2018 18:40:53 -0400 [thread overview]
Message-ID: <jwv7eqg9awk.fsf-monnier+gmane.emacs.devel@gnu.org> (raw)
In-Reply-To: 1520885798.1440538.1300560400.68951242@webmail.messagingengine.com
> Is there any way for package to know how many mandatory arguments a
> function has, to be able to branch out for compatibility reasons?
The way I recommend is:
(condition-case nil
(call1 ...)
(wrong-number-of-arguments
(call2 ...)))
-- Stefan
next prev parent reply other threads:[~2018-03-12 22:40 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-22 8:09 cc-mode: Make all parameters introduced in Emacs 26 optional Jostein Kjønigsen
2018-01-22 20:32 ` Alan Mackenzie
2018-02-03 5:59 ` Matthew Carter
2018-02-03 6:13 ` Matthew Carter
2018-02-03 11:44 ` Alan Mackenzie
2019-03-30 13:51 ` Alan Mackenzie
2019-03-30 16:39 ` Stefan Monnier
2019-03-30 19:42 ` Alan Mackenzie
2019-03-30 20:17 ` Stefan Monnier
2019-03-30 21:53 ` Ergus
2018-03-12 20:16 ` Jostein Kjønigsen
2018-03-12 22:40 ` Stefan Monnier [this message]
2018-03-12 23:29 ` Clément Pit-Claudel
2018-03-13 1:00 ` Stefan Monnier
2018-03-13 20:08 ` Jostein Kjønigsen
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