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| From: | Stefan Monnier |
| Subject: | Re: cc-mode: Make all parameters introduced in Emacs 26 optional |
| Date: | Mon, 12 Mar 2018 18:40:53 -0400 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
> 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
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