From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: [External] : Re: cond construct for situation when a variable is t Date: Tue, 22 Aug 2023 21:31:51 +0200 Message-ID: <874jkq98m0.fsf@dataswamp.org> References: <87o7j2d6yd.fsf@dataswamp.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="11373"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:5Fz2IWz1zQQruKxItgN7ZI9nDtk= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 23 20:57:36 2023 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 1qYt2u-0002n5-2z for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 23 Aug 2023 20:57:36 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qYt2i-00078V-1Z; Wed, 23 Aug 2023 14:57:25 -0400 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 1qYX9d-0005nz-Hc for help-gnu-emacs@gnu.org; Tue, 22 Aug 2023 15:35:06 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qYX9b-00050W-1o for help-gnu-emacs@gnu.org; Tue, 22 Aug 2023 15:35:05 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1qYX9Y-0008DN-Rl for help-gnu-emacs@gnu.org; Tue, 22 Aug 2023 21:35:00 +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: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Wed, 23 Aug 2023 14:57:19 -0400 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:144943 Archived-At: Drew Adams wrote: >> Right, because one can set the letter t to something which >> would then screw up the idea that t means >> a truth condition. > > (setq t 42) > > Debugger entered--Lisp error: (setting-constant t) > signal(setting-constant (t)) > (progn (signal 'setting-constant (list 't))) > (progn (progn (signal 'setting-constant (list 't)))) > elisp--eval-last-sexp(nil) > eval-last-sexp(nil) > funcall-interactively(eval-last-sexp nil) > command-execute(eval-last-sexp) > > And `t' is not a "letter" here; it's a _symbol_ whose name > is "t". Okay, so they don't allow that anymore. Good, I guess. Or maybe I did it in another way than using `setq', I say this because I remember it very well that suddenly nothing worked. -- underground experts united https://dataswamp.org/~incal