From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: emacs-27 eebfb72 1/2: Document constant vs mutable objects better Date: Mon, 20 Apr 2020 21:48:28 -0400 Message-ID: References: <20200418200112.26900.1274@vcs0.savannah.gnu.org> <20200418200114.85C8C20A2B@vcs0.savannah.gnu.org> <87wo6c5vxf.fsf@gmail.com> <54e69de3-f1b9-cbcc-dec1-11f5b1bcd481@cs.ucla.edu> <87o8rn3y2k.fsf@gmail.com> <871rojc8qk.fsf@web.de> Reply-To: rms@gnu.org Content-Type: text/plain; charset=Utf-8 Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="65757"; mail-complaints-to="usenet@ciao.gmane.io" Cc: eggert@cs.ucla.edu, stepnem@gmail.com, emacs-devel@gnu.org To: Michael Heerdegen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Apr 21 03:50:34 2020 Return-path: Envelope-to: ged-emacs-devel@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 1jQi3W-000Gyt-Gz for ged-emacs-devel@m.gmane-mx.org; Tue, 21 Apr 2020 03:50:34 +0200 Original-Received: from localhost ([::1]:46140 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQi3U-0001kp-Pn for ged-emacs-devel@m.gmane-mx.org; Mon, 20 Apr 2020 21:50:32 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34178) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQi1X-0006wk-Dp for emacs-devel@gnu.org; Mon, 20 Apr 2020 21:48:31 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:60179) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQi1V-0005b8-8K; Mon, 20 Apr 2020 21:48:29 -0400 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.82) (envelope-from ) id 1jQi1U-0003AI-2Y; Mon, 20 Apr 2020 21:48:28 -0400 In-Reply-To: <871rojc8qk.fsf@web.de> (message from Michael Heerdegen on Mon, 20 Apr 2020 02:16:03 +0200) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:247436 Archived-At: [[[ To any NSA and FBI agents reading my email: please consider ]]] [[[ whether defending the US Constitution against all enemies, ]]] [[[ foreign or domestic, requires you to follow Snowden's example. ]]] > > Regarding comparing two equal floats, strings or lists by `eq', you warn > > about its undefinedness ("might not return nil") repeatedly, but can you > > give an actual example where (eq 1.2 1.2) or (eq "string" "string") > > returns non-nil in Elisp? > (eq "" "") => t. You don't even have to compile. I just evaluated (eq "string" "string") and got nil. I think (eq "" "") is an exception. -- Dr Richard Stallman Chief GNUisance of the GNU Project (https://gnu.org) Founder, Free Software Foundation (https://fsf.org) Internet Hall-of-Famer (https://internethalloffame.org)