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From: Jean Louis <bugs@gnu.support>
To: Dr Rainer Woitok <rainer.woitok@gmail.com>
Cc: help-gnu-emacs@Gnu.Org
Subject: Re: (interactive) and &optional
Date: Sat, 25 Mar 2023 17:32:06 +0300	[thread overview]
Message-ID: <ZB8F5sYJUo/4rJhR@protected.localdomain> (raw)
In-Reply-To: <25630.58233.939785.855@woitok.gmail.com>

* Dr Rainer Woitok <rainer.woitok@gmail.com> [2023-03-25 15:05]:
> > I do not like involving `interactive' at all, so I do the handling by
> > providing optional argument and telling function to check for it, or
> > ask for it.
> > 
> > (defun search-something (&optional query)
> >   "Search something by using QUERY."
> >   (interactive)
> >   (let* ((query (or query (read-from-minibuffer "Query: "))))
> >     (do-the-search query)))
> 
> Correct me if I'm wrong,  but doesn't this  unconditionally call  "read-
> from-minibuffer"  when non-interactively called  without argument?  Non-
> interactively I would like the function to simply use my default value.

Yet, it calls unconditionally if that is the choice of programmer.

If you want default value, then you can do so:

(let* ((query (or query my-default-value (read-from-minibuffer "Query: "))))
  (do-the-search query)))

or like this:

(let* ((query (or query my-default-value)))
  (do-the-search query))

-- 
Jean

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  reply	other threads:[~2023-03-25 14:32 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-23 19:10 (interactive) and &optional Dr Rainer Woitok
2023-03-23 19:20 ` Philip Kaludercic
2023-03-25 12:35   ` Dr Rainer Woitok
2023-03-25 13:12     ` Philip Kaludercic
2023-03-25 14:33       ` [External] : " Drew Adams
2023-03-25 15:36         ` Dr Rainer Woitok
2023-03-25 16:58         ` Philip Kaludercic
2023-03-23 20:01 ` Emanuel Berg
2023-03-24  9:23 ` Jean Louis
2023-03-24 20:52   ` Philip Kaludercic
2023-03-24 21:07     ` Emanuel Berg
2023-03-27  1:52       ` [External] : " Drew Adams
2023-03-27  2:40         ` John Yates
2023-03-24 21:42     ` Jean Louis
2023-03-26  1:04       ` Emanuel Berg
2023-03-30 19:04         ` Jean Louis
2023-03-25 12:05   ` Dr Rainer Woitok
2023-03-25 14:32     ` Jean Louis [this message]
2023-03-25 15:41       ` Dr Rainer Woitok

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