From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Trimming strings, /emacs/lisp/emacs-lisp/subr-x.el modification Date: Wed, 10 May 2017 05:29:00 +0300 Message-ID: <83h90tbg2b.fsf@gnu.org> References: <51D5E92C-F125-4ADE-8C55-E3513C00ECDC@gmail.com> <8F6958D6-3E13-4C31-B1F8-AF10A8FC8FC6@gmail.com> <838tmafigi.fsf@gnu.org> <7C79DA34-96F2-4D9F-9E9C-01574AE00F12@gmail.com> <8360hefepp.fsf@gnu.org> <0E129E02-FA64-4664-825B-8854A66CA9C6@gmail.com> <3D0BA0E6-02E2-4E90-8A59-121065547E1C@gmail.com> <87ziepho0q.fsf@gnu.org> <83vapderm3.fsf@gnu.org> <87vapdhi9j.fsf@gnu.org> <83tw4xeorf.fsf@gnu.org> <83vapbctij.fsf@gnu.org> <87vapb9dd8.fsf@gnu.org> <877f1qutfq.fsf@drachen> <83wp9qawav.fsf@gnu.org> <0843BD47-5297-4B55-B870-BBE3AEB59D23@gmail.com> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: blaine.gmane.org 1494383395 13003 195.159.176.226 (10 May 2017 02:29:55 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 10 May 2017 02:29:55 +0000 (UTC) Cc: tino.calancha@gmail.com, michael_heerdegen@web.de, jean.christophe.helary@gmail.com, bojohan@gnu.org, emacs-devel@gnu.org, mvoteiza@udel.edu To: Andreas Schwab Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed May 10 04:29:51 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 1d8HNt-0003FX-8L for ged-emacs-devel@m.gmane.org; Wed, 10 May 2017 04:29:49 +0200 Original-Received: from localhost ([::1]:40117 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d8HNy-0006CC-Lc for ged-emacs-devel@m.gmane.org; Tue, 09 May 2017 22:29:54 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:53512) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d8HNR-0006C6-PR for emacs-devel@gnu.org; Tue, 09 May 2017 22:29:22 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d8HNQ-0004lR-TI for emacs-devel@gnu.org; Tue, 09 May 2017 22:29:21 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:50343) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d8HNN-0004jo-7q; Tue, 09 May 2017 22:29:17 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4037 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1d8HNM-0004Cq-06; Tue, 09 May 2017 22:29:16 -0400 In-reply-to: (message from Andreas Schwab on Tue, 09 May 2017 18:37:47 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e 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:214734 Archived-At: > From: Andreas Schwab > Cc: Eli Zaretskii , Michael Heerdegen > , Mark Oteiza , > emacs-devel@gnu.org, Johan Bockgård , > tino.calancha@gmail.com > Date: Tue, 09 May 2017 18:37:47 +0200 > > > Ok, so we agree that we don't add \\( \\) to the regexp and that we expect the caller to send a correct regexp as is the case for split-string, is that correct ? > > If you want to modify a regexp you need to make sure to preserve its > semantics. Can you give an example of a regexp whose semantics might change by adding \\(..\\)?