From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.bugs Subject: bug#19208: replace-match unhelpful error message Date: Sun, 04 Aug 2019 11:18:17 +0200 Message-ID: References: <87r3wn5kgw.fsf@newcastle.ac.uk> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="68042"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2.90 (gnu/linux) Cc: 19208@debbugs.gnu.org, Lars Ingebrigtsen , Phillip Lord To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Aug 04 11:19:11 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1huCfV-000HXl-Ar for geb-bug-gnu-emacs@m.gmane.org; Sun, 04 Aug 2019 11:19:09 +0200 Original-Received: from localhost ([::1]:43266 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1huCfT-0007z4-OV for geb-bug-gnu-emacs@m.gmane.org; Sun, 04 Aug 2019 05:19:07 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:50138) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1huCfP-0007yy-O3 for bug-gnu-emacs@gnu.org; Sun, 04 Aug 2019 05:19:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1huCfO-00042C-Qm for bug-gnu-emacs@gnu.org; Sun, 04 Aug 2019 05:19:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:51609) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1huCfO-000426-NU for bug-gnu-emacs@gnu.org; Sun, 04 Aug 2019 05:19:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1huCfO-0004hI-Hx for bug-gnu-emacs@gnu.org; Sun, 04 Aug 2019 05:19:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andreas Schwab Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 04 Aug 2019 09:19:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 19208 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: fixed Original-Received: via spool by 19208-submit@debbugs.gnu.org id=B19208.156491030318007 (code B ref 19208); Sun, 04 Aug 2019 09:19:02 +0000 Original-Received: (at 19208) by debbugs.gnu.org; 4 Aug 2019 09:18:23 +0000 Original-Received: from localhost ([127.0.0.1]:60430 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1huCek-0004gM-MO for submit@debbugs.gnu.org; Sun, 04 Aug 2019 05:18:22 -0400 Original-Received: from mail-out.m-online.net ([212.18.0.9]:40881) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1huCej-0004gF-1F for 19208@debbugs.gnu.org; Sun, 04 Aug 2019 05:18:21 -0400 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 461b0r3c8pz1rD9k; Sun, 4 Aug 2019 11:18:20 +0200 (CEST) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 461b0r3BFXz1qqkk; Sun, 4 Aug 2019 11:18:20 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id nPLrHkLxFFQu; Sun, 4 Aug 2019 11:18:19 +0200 (CEST) X-Auth-Info: rFanSZiW2XGRFiB51qrTay9joWpJgPEbzMsU53Ql+FEDRM9WnI8xTiK32wRtkw4h Original-Received: from linux.local (ppp-46-244-175-194.dynamic.mnet-online.de [46.244.175.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Sun, 4 Aug 2019 11:18:19 +0200 (CEST) Original-Received: by linux.local (Postfix, from userid 501) id 70CA51E532C; Sun, 4 Aug 2019 11:18:17 +0200 (CEST) X-Yow: Yow! Maybe I should have asked for my Neutron Bomb in PAISLEY-- In-Reply-To: (Paul Eggert's message of "Sat, 3 Aug 2019 13:22:26 -0700") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:164541 Archived-At: On Aug 03 2019, Paul Eggert wrote: > I learned Leibniz conditionals from the late Val Schorre, who was *really* > good at programming and programming style: Knuth credits Schorre with the > invention of goto-less programming in the early 1960s. When I redid your > patch as a Leibniz conditional, I instantly spotted the bug that it > introduced. You might give Leibniz conditionals a try, as they help make > code more readable and reliable when checking for range errors or > overflow. Perhaps those that need that construct are not good enough to cope with natural languages. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."