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: [SOLVED with `eval']: Why I cannot use this variable in macro call from function? Date: Tue, 8 Jun 2021 23:12:26 +0300 Message-ID: References: <20210608183138.GA14693@tuxteam.de> <20210608200312.GE14693@tuxteam.de> 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="11300"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0.7+183 (3d24855) (2021-05-28) Cc: Help GNU Emacs To: tomas@tuxteam.de Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Jun 08 22:16:57 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 1lqi9h-0002iK-LC for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 08 Jun 2021 22:16:57 +0200 Original-Received: from localhost ([::1]:40964 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lqi9g-0001yV-LG for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 08 Jun 2021 16:16:56 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51844) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lqi93-0001yL-2K for help-gnu-emacs@gnu.org; Tue, 08 Jun 2021 16:16:17 -0400 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:50447) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lqi8z-000501-Im for help-gnu-emacs@gnu.org; Tue, 08 Jun 2021 16:16:16 -0400 Original-Received: from localhost ([::ffff:197.157.0.23]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 00000000000AE2EE.0000000060BFD00A.00000FBB; Tue, 08 Jun 2021 13:16:09 -0700 Mail-Followup-To: tomas@tuxteam.de, Drew Adams , Help GNU Emacs Content-Disposition: inline In-Reply-To: <20210608200312.GE14693@tuxteam.de> Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com X-Spam_score_int: -3 X-Spam_score: -0.4 X-Spam_bar: / X-Spam_report: (-0.4 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_SORBS_WEB=1.5, SPF_HELO_PASS=-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:130645 Archived-At: * tomas@tuxteam.de [2021-06-08 23:04]: > You want to define a variable whose name you can only know > at run time? Did I understand that correctly? Exactly. The dynamic history variable in this case. - The database table "notes" references the table "people" - User edits the table "notes" and wish to re-assign the note to another person; pressing up down brings back the history items for that specific table, and the variable becomes automatically defined as `people-history' - now imagine hundreds of such variables and they grow each week dynamically whenever some new table gets added; Larger problem is the mixed history causes problems, so this way there is no global history. -- Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns In support of Richard M. Stallman https://stallmansupport.org/