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: don't understand setq-default Date: Mon, 19 Apr 2021 09:52:18 +0300 Message-ID: References: <87mttvx1lo.fsf@zoho.eu> <87eef7ycd9.fsf@omarpolo.com> <87blabww2u.fsf@zoho.eu> <877dkzww0r.fsf@zoho.eu> <8735vnwu8z.fsf@zoho.eu> <87wnszj5mj.fsf@zoho.eu> 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="28922"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0.6 (2021-03-06) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Apr 19 08:55:26 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 1lYNoc-0007Q5-I8 for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 19 Apr 2021 08:55:26 +0200 Original-Received: from localhost ([::1]:48906 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lYNob-0000aF-M0 for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 19 Apr 2021 02:55:25 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:48230) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYNnw-0000a7-AS for help-gnu-emacs@gnu.org; Mon, 19 Apr 2021 02:54:44 -0400 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:49047) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYNnt-0002TG-Sq for help-gnu-emacs@gnu.org; Mon, 19 Apr 2021 02:54:44 -0400 Original-Received: from localhost ([::ffff:41.202.241.57]) (AUTH: PLAIN securesender, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 00000000000280C8.00000000607D2930.000027B6; Sun, 18 Apr 2021 23:54:39 -0700 Mail-Followup-To: help-gnu-emacs@gnu.org Content-Disposition: inline In-Reply-To: <87wnszj5mj.fsf@zoho.eu> 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, 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:129067 Archived-At: * Emanuel Berg via Users list for the GNU Emacs text editor [2021-04-19 06:50]> Gets soo complicated this just so you can have a bunch of > buffer instances store some metadata that is common but > individual. OK, maybe helpful sometimes, sounds like it... That is what I use all the time over here, for example I search for people, I can get list of 13 people and mark them, store their ID numbers in a variable that is same as in other buffer. In other buffer maybe I mark 2 of them and wish to move them from one list to other by using buffer, similar like copy/rename in dired. Let us say there are 2 buffers, you wish to mark 3 people in the list in one buffer and 4 people in the list in other buffer, but you don't want to mix them. Their marks go into individual or buffer local variables that are named same but are different from buffer to buffer. Buffer 1 would have 3 people with ID numbers like 1, 2 and 3. Buffer 2 would have 4 people with ID numbers like 23, 28 and 29. In both cases variable is named `marked-people' It is possible to switch program execution to other buffer, fetch those values and switch back. This may be useful when one needs to merge some information, copy or rename, probably for many other uses. One could for example browse a database from Singapore in one buffer, and other from New York in other buffer and decide to merge some entries. -- Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns Sign an open letter in support of Richard M. Stallman https://stallmansupport.org/ https://rms-support-letter.github.io/