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: Why does saving a buffer to a new file clear local variables? Date: Thu, 12 Dec 2024 21:31:27 +0300 Message-ID: References: <87bjxh87cr.fsf@web.de> <871pyd8383.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13940"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.2.12 (2023-09-09) Cc: help-gnu-emacs@gnu.org To: Michael Heerdegen Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Dec 12 19:32:33 2024 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 1tLnzE-0003Vk-Ud for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 12 Dec 2024 19:32:32 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tLnyT-0007mO-Re; Thu, 12 Dec 2024 13:31:45 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tLnyQ-0007mD-Uw for help-gnu-emacs@gnu.org; Thu, 12 Dec 2024 13:31:42 -0500 Original-Received: from stw1.rcdrun.com ([217.170.207.13]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tLnyO-0000hK-Mb for help-gnu-emacs@gnu.org; Thu, 12 Dec 2024 13:31:42 -0500 Original-Received: from localhost ([::ffff:41.75.190.237]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 0000000000081EF2.00000000675B2C04.0000EEB6; Thu, 12 Dec 2024 11:31:31 -0700 Mail-Followup-To: Michael Heerdegen , help-gnu-emacs@gnu.org Content-Disposition: inline In-Reply-To: <871pyd8383.fsf@web.de> Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com 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, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, 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: 2.1.29 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-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:148780 Archived-At: * Michael Heerdegen via Users list for the GNU Emacs text editor [2024-12-12 16:02]: > Jean Louis writes: > > > > Are you sure that you don't just see the global binding of that > > > variable? > > > > Unless you wish to reveal some new fact about it to me, I see that by > > using `defvar-local' I can save file and variable `abc' still has > > initially assigned value. > > > > And it has this description: > > > > abc’s value is 123 > > > > Not documented as a variable. > > > > Automatically becomes buffer-local when set. > > That's the global binding. A buffer local binding is reported as "local > in buffer XYZ" - even when the local binding is the same as the global > one. > > `defvar-local' defines a global (aka "default") value. Until you make an > assignment in some buffer no buffer local bindings exist. Okay, I am lost, will review it again when I need it, even though I use heavily permanent-local variables: (defvar-local rcd-tabulated-original-entries nil "Original `tabulated-list-entries'.") (put 'rcd-tabulated-original-entries 'permanent-local t) But now when I use them, I just use them, I forgot pretty much about it. It just works in the application. -- Jean Louis