From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#42168: 26.1; cperl-mode: Bad interpretation of $a++ / $b Date: Sat, 11 Jul 2020 12:53:49 +0300 Message-ID: <83v9iunzrm.fsf@gnu.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6711"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 42168@debbugs.gnu.org To: Harald =?UTF-8?Q?J=C3=B6rg?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Jul 11 11:55:10 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1juCDu-0001ci-FS for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 11 Jul 2020 11:55:10 +0200 Original-Received: from localhost ([::1]:59046 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1juCDt-0005UW-49 for geb-bug-gnu-emacs@m.gmane-mx.org; Sat, 11 Jul 2020 05:55:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41238) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1juCDl-0005UC-Vz for bug-gnu-emacs@gnu.org; Sat, 11 Jul 2020 05:55:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:60536) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1juCDl-0006SX-Ln for bug-gnu-emacs@gnu.org; Sat, 11 Jul 2020 05:55:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1juCDl-0000nt-JS for bug-gnu-emacs@gnu.org; Sat, 11 Jul 2020 05:55:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 11 Jul 2020 09:55:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 42168 X-GNU-PR-Package: emacs Original-Received: via spool by 42168-submit@debbugs.gnu.org id=B42168.15944612483019 (code B ref 42168); Sat, 11 Jul 2020 09:55:01 +0000 Original-Received: (at 42168) by debbugs.gnu.org; 11 Jul 2020 09:54:08 +0000 Original-Received: from localhost ([127.0.0.1]:43849 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1juCCt-0000md-MA for submit@debbugs.gnu.org; Sat, 11 Jul 2020 05:54:07 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:55496) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1juCCr-0000m9-HW for 42168@debbugs.gnu.org; Sat, 11 Jul 2020 05:54:06 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:53872) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1juCCl-0006Oi-LZ; Sat, 11 Jul 2020 05:53:59 -0400 Original-Received: from [176.228.60.248] (port=4274 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1juCCl-0000Hi-24; Sat, 11 Jul 2020 05:53:59 -0400 In-Reply-To: (message from Harald =?UTF-8?Q?J=C3=B6rg?= on Thu, 2 Jul 2020 20:19:21 +0200) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:182908 Archived-At: > From: Harald Jörg > Date: Thu, 2 Jul 2020 20:19:21 +0200 > > How to reproduce: > In a buffer, activate cperl-mode (M-x cperl-mode), then enter: > > $a++ / $b; > > This is supposed to be a division. However, cperl-mode interprets the > slash as the start of a regular expression. Accordingly, the following > text is displayed with the wrong face, and also cperl-mode might > complain that it can't find the end of the regular expression. > > Emacs does not crash. > > Attached: A patch which fixes the issue for $a++ and $a--, and also > includes a test to verify that the very similar text "$a+ / $b" is still > correctly interpreted as a regular expression. Thanks. To accept a substantial contribution such as this one, we will need you to assign the copyright of your code to the FSF. If you are okay with starting your legal paperwork, I will send you the form to sign and email. Thank you for your interest in Emacs.