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From: Thorsten Jolitz <tjolitz@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: `call-interactively' and prefix args
Date: Tue, 03 Jun 2014 15:15:04 +0200	[thread overview]
Message-ID: <8761kim8x3.fsf@gmail.com> (raw)
In-Reply-To: 87r436gnfq.fsf@geodiff-mac3.ulb.ac.be

Nicolas Richard <theonewiththeevillook@yahoo.fr> writes:

> Thorsten Jolitz <tjolitz@gmail.com> writes:
>> So, when I have an (interactive) command cmd1 that calls a
>> non-interactive function fun that calls another (interactive "P")
>> command cmd2 with `call-interactively' - can I assume that a prefix arg
>> (e.g. by C-u) given before calling cmd1 will be transferred to cmd2?
>
> current-prefix-arg is used. If cmd1 changes it, anything can happen.
>
> e.g.
>
> (global-set-key (kbd "<f6>") (lambda () (interactive) (yffoo)))
> (defun yffoo () (setq current-prefix-arg '(5)) (call-interactively 'yfbar))
> (defun yfbar (&optional arg) (interactive "P") (message "arg is %S" arg))
>
> hitting f6 will show that arg is (5) (which doesn't make sense in an
> true interactive call)

Ok, thanks! Then misbehaviour must be coded explicitly, otherwise things
should work as expected ... what is good. 

-- 
cheers,
Thorsten




  reply	other threads:[~2014-06-03 13:15 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-03 12:46 `call-interactively' and prefix args Thorsten Jolitz
2014-06-03 12:58 ` Nicolas Richard
2014-06-03 13:15   ` Thorsten Jolitz [this message]
2014-06-03 13:55     ` Stefan Monnier

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