From: Bruno Barbier <brubar.cs@gmail.com>
To: carlmarcos@tutanota.com, Help Gnu Emacs <help-gnu-emacs@gnu.org>
Subject: Re: Prefix Argument and optional argument
Date: Tue, 05 Jul 2022 08:52:05 +0200 [thread overview]
Message-ID: <E1o8cO3-0002zL-4b@lists.gnu.org> (raw)
In-Reply-To: <N6BGFpe--3-2@tutanota.com>
carlmarcos--- via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org> writes:
> I am having difficulty figuring out any problems associated with the following two functions.
>
> Can one safely call "M-x name", "C-u M-x name", "C-u 2 M-x name", where name is either
> `poke' or `poke-opt'.
>
> (defun poke (prefix)
> "TODO."
> (interactive "P")
> ...)
You should compile your code; Emacs will say:
Warning: misplaced interactive spec: ‘(interactive P)’
>
> (defun poke-opt (&optional prefix)
> "TODO."
> (interactive "P")
> ...)
This version is OK. You can call it "M-x name", "C-u M-x name", "C-u 2
M-x name"; wether it's safe or not depends on its body though ;-)
Bruno
next prev parent reply other threads:[~2022-07-05 6:52 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-05 2:51 Prefix Argument and optional argument carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-05 6:52 ` Bruno Barbier [this message]
2022-07-05 11:32 ` Michael Heerdegen
[not found] ` <N6C6ucy----2@missing-mail-id>
2022-07-05 20:26 ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-06 11:25 ` Michael Heerdegen
2022-07-06 21:35 ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-07 19:04 ` Stefan Monnier via Users list for the GNU Emacs text editor
[not found] ` <N6Cxz_J--3-2@tutanota.com-N6F1to4----2>
2022-07-06 21:18 ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-07 10:56 ` Michael Heerdegen
2022-07-07 11:51 ` Emanuel Berg
2022-07-07 12:02 ` Emanuel Berg
2022-07-07 12:15 ` Michael Heerdegen
2022-07-07 12:38 ` Christopher Dimech
2022-07-07 12:53 ` Michael Heerdegen
2022-07-07 13:15 ` Christopher Dimech
2022-07-07 13:45 ` Michael Heerdegen
2022-07-07 14:03 ` Christopher Dimech
2022-07-07 14:35 ` Michael Heerdegen
2022-07-07 15:20 ` Emanuel Berg
2022-07-07 15:31 ` Michael Heerdegen
2022-07-07 15:50 ` Emanuel Berg
2022-07-07 17:03 ` docstrings (was: Re: Prefix Argument and optional argument) Emanuel Berg
2022-07-07 17:06 ` docstrings (was: " Christopher Dimech
2022-07-07 17:48 ` Christopher Dimech
2022-07-07 19:20 ` Emanuel Berg
2022-07-07 19:42 ` enforce/automate docstring correctnes (was: Re: docstrings) Emanuel Berg
2022-07-07 14:58 ` Prefix Argument and optional argument Stefan Monnier via Users list for the GNU Emacs text editor
2022-07-07 15:12 ` Emanuel Berg
2022-07-07 19:19 ` Christopher Dimech
2022-07-07 19:38 ` Christopher Dimech
2022-07-07 14:08 ` Jean Louis
2022-07-07 15:41 ` Christopher Dimech
2022-07-07 13:04 ` Yuri Khan
2022-07-07 13:38 ` Michael Heerdegen
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