From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: [PATCH] * etc/NEWS: Document incompatibilities introduced by record types. Date: Tue, 12 Dec 2017 17:20:29 -0500 Message-ID: References: <20171211213729.41411-1-phst@google.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1513117527 13017 195.159.176.226 (12 Dec 2017 22:25:27 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 12 Dec 2017 22:25:27 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Dec 12 23:25:24 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eOszL-0003Bv-NY for ged-emacs-devel@m.gmane.org; Tue, 12 Dec 2017 23:25:23 +0100 Original-Received: from localhost ([::1]:60812 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eOszS-0000Mm-WC for ged-emacs-devel@m.gmane.org; Tue, 12 Dec 2017 17:25:31 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45675) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eOszK-0000Lu-67 for emacs-devel@gnu.org; Tue, 12 Dec 2017 17:25:23 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eOszF-00035m-14 for emacs-devel@gnu.org; Tue, 12 Dec 2017 17:25:22 -0500 Original-Received: from [195.159.176.226] (port=54859 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eOszE-000348-Qc for emacs-devel@gnu.org; Tue, 12 Dec 2017 17:25:16 -0500 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1eOsz4-0002QI-RQ for emacs-devel@gnu.org; Tue, 12 Dec 2017 23:25:06 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 11 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:UaI6To8aEX8mjPUeqiDZ96IiJnE= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:220974 Archived-At: > If programmers are not supposed to do it, let's detect it and report > an error when they try. That way, they will know it's an error as > soon as they try, rather than needing to debug it to find out it's an error. When was the last time you saw a user try to redefine the "integer" type? [ I'll be happy to hear about cases in other languages than Elisp, since otherwise it's going to be depressingly silent I'm afraid. ] Stefan