From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Insert one of the flags automatically with tab completion. Date: Sun, 24 Oct 2021 17:09:22 +0200 Message-ID: <871r4azcgt.fsf@zoho.eu> References: <874k97y28i.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30073"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:tmcDgjN/o4Eun5yF4h7LwJrAyiM= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Oct 24 17:10:02 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mef8M-0007e4-Dd for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 24 Oct 2021 17:10:02 +0200 Original-Received: from localhost ([::1]:59696 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mef8L-0005p5-Gu for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 24 Oct 2021 11:10:01 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:33676) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mef81-0005ow-39 for help-gnu-emacs@gnu.org; Sun, 24 Oct 2021 11:09:41 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:53642) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mef7w-0008QH-W3 for help-gnu-emacs@gnu.org; Sun, 24 Oct 2021 11:09:40 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mef7u-00075o-4s for help-gnu-emacs@gnu.org; Sun, 24 Oct 2021 17:09:34 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:134108 Archived-At: Hongyi Zhao wrote: >> Note that interactive and non-interactive use are not >> identical in one aspect ... > > Interactive is interacting with user as a command. > Non-interactive is called from within lisp code. Yes, interactive is a command, M-x CMD RET, or a keybinding. Non-interactive is from Lisp ... (`call-interactively' is the exception that proves the rule, and it should only be used when ... there is a reason to :)) But that's not what I refered to actually, if you study the code you see the "nil t" that you asked about in the other thread - (defun atomic-position (flag) (interactive (list (completing-read "flag: " '("alat" "angstrom" "bohr" "crystal" "crystal_sg") nil t) )) (insert (format "Atomic position: %s\n" flag)) ) - and if you take a look at the docstring of `completion-read' you see that these arguments are for the &optional PREDICATE REQUIRE-MATCH so the first nil says PREDICATE should be nil, it is already nil by default but we want to say that REQUIRE-MATCH should be t, so we say that PREDICATE is nil just to get to REQUIRE-MATCH if you follow, then we say it is t. And this is the difference from non-interactive use, because there is no such thing in the non-interactive part of the function. You can send any "flag" argument from Lisp and it will be processed. (atomic-position "darn") But M-x atomic-position RET darn RET ... try it. Read (or look at) the docstrings, especially the interface/prototype part, to all functions you use ... -- underground experts united https://dataswamp.org/~incal