From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: Change of Lisp syntax for "fancy" quotes in Emacs 27? Date: Sat, 6 Oct 2018 12:30:23 -0700 Organization: UCLA Computer Science Department Message-ID: References: <83y3bc2378.fsf@gnu.org> <83k1mv1j1b.fsf@gnu.org> <5ebde087-561e-c71a-0840-d99626c02dcf@cs.ucla.edu> <83bm8710ss.fsf@gnu.org> <5fcbc157-51ac-0814-e470-6e76f76611ac@cs.ucla.edu> <83a7nr0vzt.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1538854148 6035 195.159.176.226 (6 Oct 2018 19:29:08 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 6 Oct 2018 19:29:08 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 Cc: emacs-devel@gnu.org, npostavs@users.sourceforge.net To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Oct 06 21:29:03 2018 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 1g8sG7-0001Rr-Gq for ged-emacs-devel@m.gmane.org; Sat, 06 Oct 2018 21:29:03 +0200 Original-Received: from localhost ([::1]:40194 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g8sID-0003BB-Lc for ged-emacs-devel@m.gmane.org; Sat, 06 Oct 2018 15:31:13 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39631) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g8sHX-0003As-Cl for emacs-devel@gnu.org; Sat, 06 Oct 2018 15:30:32 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g8sHW-0001kl-Pk for emacs-devel@gnu.org; Sat, 06 Oct 2018 15:30:31 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:38880) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1g8sHT-0001dU-39; Sat, 06 Oct 2018 15:30:27 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 50A401616EF; Sat, 6 Oct 2018 12:30:25 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id g5vwWALwFX05; Sat, 6 Oct 2018 12:30:24 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 4CC261616F8; Sat, 6 Oct 2018 12:30:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id v3sTc2_23mGl; Sat, 6 Oct 2018 12:30:24 -0700 (PDT) Original-Received: from [192.168.1.9] (cpe-23-242-74-103.socal.res.rr.com [23.242.74.103]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 1ED0E1616EF; Sat, 6 Oct 2018 12:30:24 -0700 (PDT) In-Reply-To: <83a7nr0vzt.fsf@gnu.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 131.179.128.68 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:230268 Archived-At: Eli Zaretskii wrote: >> (ignore-errors (gnus-get-function method 'open-server)) >> >> Change that APOSTROPHE (U+0027) to RIGHT SINGLE QUOTATION MARK (U+2019) and the >> code will look the same but do something quite different, with no diagnostic. > ... adding a backslash between the > U+2019 quote will not significantly improve the situation, because > Emacs Lisp uses backslashes in many other situation, like ?\", and > therefore the mere fact that there is a backslash doesn't necessarily > alert the human reader to the existence of an unusual character. True, a backslash within a string or character is not a sufficient alert. However, a backslash within a symbol is. For example, although it's relatively common to see strings like this in Elisp source code: "color=\"blue\"" it's extremely uncommon to see symbols like this: color=\"blue\" and so if one sees such a symbol (possibly with some other character in place of the " marks, possibly not) one will easily know that something odd is going on.