From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jean Louis Newsgroups: gmane.emacs.help Subject: Re: How to save custom variable programmatically? Date: Wed, 11 Nov 2020 00:46:03 +0300 Message-ID: References: <87blg5e9re.fsf@web.de> <87o8k5b7oq.fsf@web.de> <87wnytoses.fsf@mbork.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="20347"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0 (3d08634) (2020-11-07) Cc: Michael Heerdegen , help-gnu-emacs@gnu.org To: Marcin Borkowski Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Nov 10 22:47:13 2020 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 1kcbTs-000575-NJ for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 10 Nov 2020 22:47:12 +0100 Original-Received: from localhost ([::1]:54046 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kcbTr-0005v1-NJ for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 10 Nov 2020 16:47:11 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59940) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kcbT6-0005tj-2L for help-gnu-emacs@gnu.org; Tue, 10 Nov 2020 16:46:24 -0500 Original-Received: from static.rcdrun.com ([95.85.24.50]:36515) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kcbT4-0001UY-6c for help-gnu-emacs@gnu.org; Tue, 10 Nov 2020 16:46:23 -0500 Original-Received: from localhost ([::ffff:197.157.34.177]) (AUTH: PLAIN admin, TLS: TLS1.2,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by static.rcdrun.com with ESMTPSA id 00000000002C0003.000000005FAB0A2B.0000226C; Tue, 10 Nov 2020 21:46:19 +0000 Content-Disposition: inline In-Reply-To: <87wnytoses.fsf@mbork.pl> Received-SPF: pass client-ip=95.85.24.50; envelope-from=bugs@gnu.support; helo=static.rcdrun.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/10 14:03:25 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham 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:125215 Archived-At: * Marcin Borkowski [2020-11-10 23:42]: > > On 2020-11-10, at 20:19, Jean Louis wrote: > > > * Michael Heerdegen [2020-11-10 17:36]: > >> Jean Louis writes: > >> > >> > If there is anyway of storing data from Emacs that is standard I do > >> > not know about it. Welcoming tips. > >> > >> The eieio-persistent class is made for that purpose. > >> > >> You make your data/database/whatever an object of a class you define as > >> you like, and make that class inherit from eieio-persistent. Then your > >> data is savable out of the box. > >> > >> (info "(eieio) eieio-persistent") > >> > >> Do you need an example? > > > > Thank you. If you have ready simplest example it may be useful for > > review. > > > > My strategy is to minimize number of packages used as dependencies so > > I try to use what is built in or to re-use what is inside of Emacs. > > You might get inspired by an old post of mine here: > http://mbork.pl/2018-09-10_Persisting_Emacs_variables Nice post and Wiki. Reference taken. I can read the flow somehow. You watching in the file by trying to read ^(setq if variable exists, if I get it well. It relies on personal use case and common usage of setq. What if variable is b that is set with: (set (quote b) 1) or (setq a 1 b 2) or (setq a 1 b 2 c 3) or (setf b 1) For me personally I save major information in the database. But to make simpler package for users to do one thing do well I like to find solutions that is preferrably built-in and well proven.