From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: Changing buffer mode Date: Fri, 22 Jul 2022 02:21:45 +0200 Message-ID: <878romj8ti.fsf@dataswamp.org> References: <87v8rr6awo.fsf@dataswamp.org> <87r12eo6yf.fsf@dataswamp.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16697"; 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:ikNTyXz/+x0hkxo2IAaM63ObyHE= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jul 22 02:22:39 2022 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 1oEgRC-00047g-No for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 22 Jul 2022 02:22:38 +0200 Original-Received: from localhost ([::1]:42882 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oEgRB-0008Ms-9n for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 21 Jul 2022 20:22:37 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34806) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oEgQX-0008Mk-1v for help-gnu-emacs@gnu.org; Thu, 21 Jul 2022 20:21:57 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:50280) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oEgQV-0000RF-Aw for help-gnu-emacs@gnu.org; Thu, 21 Jul 2022 20:21:56 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1oEgQS-000344-12 for help-gnu-emacs@gnu.org; Fri, 22 Jul 2022 02:21:52 +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: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 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:138558 Archived-At: carlmarcos--- via Users list for the GNU Emacs text editor wrote: >>>>> With the following function I can change the mode of >>>>> a buffer. I would like to change it to use >>>>> `completing-read` using a list composed of a selection >>>>> of mode names. How can I go about doing that? >>>> >>>> Use it? >>>> >>>> (completing-read "drop: " '(little boy fat man)) >>> >>> Yes, but then how can I update the buffer with the >>> new mode? >> >> The same way you always do it? > > I do not know the usual way. (emacs-lisp-mode) from Lisp and M-x emacs-lisp-mode RET interactively ... Anyway some code for you ... try the examples, last. ;;; -*- lexical-binding: t -*- ;; ;; this file: ;; https://dataswamp.org/~incal/emacs-init/set-mode.el (defun mode-p (fun) (let*((sfx "-mode") (len (length sfx) )) (and (functionp fun) (string= sfx (substring (symbol-name fun) (- len))) ))) (defun set-mode (&optional fun) (interactive (list (completing-read "mode: " obarray (lambda (e) (mode-p e)) t nil nil (symbol-name #'normal-mode) )) ) (if fun (let ((f (if (stringp fun) (intern fun) fun) )) (when (mode-p f) (apply (list f)) )) (normal-mode) )) ;; (set-mode #'kill-emacs) ; safe as not a mode ;; (set-mode #'fundamental-mode) ; function ;; (set-mode "emacs-lisp-mode") ; function name ;; (set-mode) ; derive mode from extention/hashbang ;; M-x set-mode RET conf-mode RET ; interactive explicit ;; M-x set-mode RET RET ; ditto implicit -- underground experts united https://dataswamp.org/~incal