From: Tassilo Horn <tsdh@gnu.org>
To: Thorsten Jolitz <tjolitz@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: How to avoid y-or-n-p in a program?
Date: Wed, 12 Mar 2014 17:14:28 +0100 [thread overview]
Message-ID: <87zjkvz95n.fsf@gnu.org> (raw)
In-Reply-To: <87y50fqvh2.fsf@gmail.com> (Thorsten Jolitz's message of "Wed, 12 Mar 2014 16:37:13 +0100")
Thorsten Jolitz <tjolitz@gmail.com> writes:
Hi Thorsten,
> when in a program function A calls another (external) function B that
> asks the user a y-or-n-p question, and you want to avoid that and
> instead code in function A that the answer is always Y, so that the
> prompt never shows up - how do you do that?
In very recent emacs versions, you can use `cl-letf' for that purpose:
--8<---------------cut here---------------start------------->8---
(defun b ()
(if (y-or-n-p "do it?")
:done
:not-done))
(defun a ()
(cl-letf (((symbol-function #'y-or-n-p)
(lambda (&rest ignore) t)))
(b)))
(a) ;; C-x C-e => :done (and no query)
--8<---------------cut here---------------end--------------->8---
Bye,
Tassilo
next prev parent reply other threads:[~2014-03-12 16:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-12 15:37 How to avoid y-or-n-p in a program? Thorsten Jolitz
2014-03-12 16:14 ` Tassilo Horn [this message]
2014-03-12 16:50 ` Juanma Barranquero
2014-03-12 18:14 ` Stefan Monnier
2014-03-12 22:31 ` Thorsten Jolitz
2014-03-14 14:26 ` Thorsten Jolitz
2014-03-14 14:35 ` Stefan
2014-03-14 14:48 ` Thorsten Jolitz
2014-03-14 16:09 ` Stefan
2014-03-14 17:21 ` Thorsten Jolitz
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