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: Why I cannot use this variable in macro call from function? Date: Tue, 08 Jun 2021 16:10:54 +0300 Message-ID: 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="10710"; mail-complaints-to="usenet@ciao.gmane.io" To: Help GNU Emacs Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Jun 08 15:12:15 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 1lqbWg-0002cE-QU for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 08 Jun 2021 15:12:14 +0200 Original-Received: from localhost ([::1]:43020 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lqbWf-0004Mv-S1 for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 08 Jun 2021 09:12:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39916) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lqbWE-0004KL-Ub for help-gnu-emacs@gnu.org; Tue, 08 Jun 2021 09:11:46 -0400 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:59619) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lqbWC-0006hh-SO for help-gnu-emacs@gnu.org; Tue, 08 Jun 2021 09:11:46 -0400 Original-Received: from localhost ([::ffff:197.157.0.46]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 00000000000ADF01.0000000060BF6C6E.00005F44; Tue, 08 Jun 2021 06:11:10 -0700 Received-SPF: pass client-ip=217.170.207.13; envelope-from=support1@rcdrun.com; helo=stw1.rcdrun.com X-Spam_score_int: -1 X-Spam_score: -0.2 X-Spam_bar: / X-Spam_report: (-0.2 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.248, 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:130621 Archived-At: I have this macro, as purpose of it is to dynamically generate history variables for more than 100 database tables. If new database table is generated a new variable will be generated without changing the source code. (defmacro rcd-db-completing-table-history (table) (let ((variable (intern (concat "rcd-db-completing-table-history-" table)))) `(if (boundp ,variable) (quote ,variable) (progn (defvar ,variable nil ,(format "History for table `%s'" table)) (quote ,variable))))) The above macro expands into following: (macroexpand '(rcd-db-completing-table-history "var-name")) ⇒ (if (boundp rcd-db-completing-table-history-var-name) 'rcd-db-completing-table-history-var-name (progn (defvar rcd-db-completing-table-history-var-name nil "History for table `var-name'") 'rcd-db-completing-table-history-var-name)) As I need a symbol for completing read and mini buffer functions. However, here are the problems: If I press C-M-x in the middle of the following function, the function will be defined without erorr. If I press C-x C-e on the end I will get debugging error: sequencep, var Here I cannot understand why I cannot use `var' variable to call macro from a function? (defun my-fun-123 () (let ((var "new")) (rcd-db-completing-table-history var))) (my-fun-123) Debugger entered--Lisp error: (wrong-type-argument sequencep var) concat("rcd-db-completing-table-history-" var) (intern (concat "rcd-db-completing-table-history-" table)) (let ((variable (intern (concat "rcd-db-completing-table-history-" table)))) (list 'if (list 'boundp variable) (list 'quote variable) (list 'progn (list 'defvar variable nil (format "History for table `%s'" table)) (list 'quote variable)))) (closure (t) (table) (let ((variable (intern (concat "rcd-db-completing-table-history-" table)))) (list 'if (list 'boundp variable) (list 'quote variable) (list 'progn (list 'defvar variable nil (format "History for table `%s'" table)) (list 'quote variable)))))(var) (rcd-db-completing-table-history var) (let ((var "new")) (rcd-db-completing-table-history var)) my-fun-123() (progn (my-fun-123)) eval((progn (my-fun-123)) t) elisp--eval-last-sexp(nil) eval-last-sexp(nil) funcall-interactively(eval-last-sexp nil) call-interactively(eval-last-sexp nil nil) command-execute(eval-last-sexp) Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns In support of Richard M. Stallman https://stallmansupport.org/