From: Lars Ingebrigtsen <larsi@gnus.org>
To: Arthur Miller <arthur.miller@live.com>
Cc: emacs-devel@gnu.org
Subject: Re: Docs for &optional and &rest arguments together
Date: Wed, 30 Dec 2020 04:12:51 +0100 [thread overview]
Message-ID: <87o8icq958.fsf@gnus.org> (raw)
In-Reply-To: <AM0PR06MB657709C899365FC0710F505496D80@AM0PR06MB6577.eurprd06.prod.outlook.com> (Arthur Miller's message of "Tue, 29 Dec 2020 14:26:32 +0100")
Arthur Miller <arthur.miller@live.com> writes:
> (required-vars…
> [&optional [optional-vars…]]
> [&rest [rest-var]])
>
> But when I use it, I still have to pass a nil for the "optional"
> argument, which I think is also not so strange either, otherwise how
> will Emacs now where "optional" argument list ends and where "rest"
> argument list starts? No?
Right.
> If actual arguments for the optional and rest variables are omitted,
> then they always default to nil."
>
> https://www.gnu.org/software/emacs/manual/html_node/elisp/Argument-List.html
>
> I get the impression that I actually can omit the optional argument(s)
> even when followed by the &rest keyword.
The paragraph just below this one, though, describes in detail what
happens with a mixed &optional and &rest argument list, so that's not my
impression when reading that node.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
next prev parent reply other threads:[~2020-12-30 3:12 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-29 13:26 Docs for &optional and &rest arguments together Arthur Miller
2020-12-29 15:10 ` Adam Porter
2020-12-29 17:06 ` arthur miller
2021-01-01 14:33 ` Arthur Miller
2020-12-30 3:12 ` Lars Ingebrigtsen [this message]
2020-12-30 12:19 ` Arthur Miller
2020-12-30 12:54 ` Yuri Khan
2020-12-31 4:43 ` Lars Ingebrigtsen
2020-12-31 7:55 ` arthur miller
2020-12-31 11:26 ` tomas
2020-12-31 16:45 ` Drew Adams
2020-12-31 17:04 ` Drew Adams
2020-12-31 17:28 ` arthur miller
2020-12-31 18:19 ` Drew Adams
2020-12-31 20:01 ` arthur miller
2020-12-31 20:27 ` Drew Adams
2020-12-31 17:08 ` arthur miller
2020-12-31 17:30 ` Daniel Brooks
2020-12-31 19:53 ` arthur miller
2020-12-31 19:40 ` tomas
-- strict thread matches above, loose matches on Subject: below --
2020-12-31 20:04 arthur miller
2020-12-31 20:35 ` tomas
2020-12-31 23:18 ` arthur miller
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