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: [External] : Re: Lexical vs. dynamic: small examples? Date: Thu, 26 Aug 2021 02:44:09 +0200 Message-ID: <87h7fdjaqu.fsf@zoho.eu> References: <4a9bddb9ec57299b3b0c@heytings.org> <87y293sdxk.fsf@zoho.eu> <87pmufs4er.fsf@zoho.eu> <87wnompmpw.fsf@zoho.eu> <87k0kmgycz.fsf@gnus.org> <87y292nya4.fsf@zoho.eu> <87o89r5uwc.fsf@zoho.eu> <871r6hksj1.fsf@zoho.eu> <87wno9jdp7.fsf@zoho.eu> <87o89ljca4.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="38256"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:R/QPZ83Dtp83JCsX9K/9dd7EYFc= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Aug 26 03:04:57 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 1mJ3pA-0009e8-BT for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 26 Aug 2021 03:04:56 +0200 Original-Received: from localhost ([::1]:39514 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mJ3p6-00032O-2p for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 25 Aug 2021 21:04:54 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:35978) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mJ3VI-0007xz-2N for help-gnu-emacs@gnu.org; Wed, 25 Aug 2021 20:44:25 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:34138) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mJ3VG-00060S-3I for help-gnu-emacs@gnu.org; Wed, 25 Aug 2021 20:44:23 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mJ3VC-0005d0-TP for help-gnu-emacs@gnu.org; Thu, 26 Aug 2021 02:44:18 +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 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:132723 Archived-At: So the way it should be done is: Put ;;; -*- lexical-binding: t -*- in the beginning of the file. Use `defvar' and `setq' for global variables that then become special/dynamic. Use `let' for local variables that then become lexical/static (because of `lexical-binding'). And nothing unexpected ever happens, because for the global, special/dynamic variables one uses prefixes? -- underground experts united https://dataswamp.org/~incal