From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#54996: Emacs hangs when editing Python code with debug-on-error set to t Date: Sun, 17 Apr 2022 22:43:00 +0200 Message-ID: <87k0bnmoff.fsf@gnus.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6371"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 54996@debbugs.gnu.org To: Richard Stanton Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Apr 17 22:44:12 2022 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 1ngBkg-0001QC-Rv for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 17 Apr 2022 22:44:11 +0200 Original-Received: from localhost ([::1]:35418 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ngBkf-0002r0-Fs for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 17 Apr 2022 16:44:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57396) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ngBkY-0002qr-4l for bug-gnu-emacs@gnu.org; Sun, 17 Apr 2022 16:44:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:43471) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ngBkX-0005gd-QE for bug-gnu-emacs@gnu.org; Sun, 17 Apr 2022 16:44:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ngBkX-0001Rs-Nt for bug-gnu-emacs@gnu.org; Sun, 17 Apr 2022 16:44:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 17 Apr 2022 20:44:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 54996 X-GNU-PR-Package: emacs Original-Received: via spool by 54996-submit@debbugs.gnu.org id=B54996.16502281975501 (code B ref 54996); Sun, 17 Apr 2022 20:44:01 +0000 Original-Received: (at 54996) by debbugs.gnu.org; 17 Apr 2022 20:43:17 +0000 Original-Received: from localhost ([127.0.0.1]:37368 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ngBjo-0001Qf-Up for submit@debbugs.gnu.org; Sun, 17 Apr 2022 16:43:17 -0400 Original-Received: from quimby.gnus.org ([95.216.78.240]:46556) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ngBjm-0001QN-SK for 54996@debbugs.gnu.org; Sun, 17 Apr 2022 16:43:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID :In-Reply-To:Date:References:Subject:Cc:To:From:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=kQ2+i8foY9/Dcp1T+Aq9FzFzMm4Fn5P7AFgBR4WSBLM=; b=cORq2sKvaH7VZUXr1lh3J3I+vn fLhcwv41LhrPlzO8rhwKgxGCYXZgL6BEKeDoHjvN84NqSjnCH8CNtNOp3yI5ksYpKwllS7emwvyj0 YON8ZUMTwjjvoOCsThV02FtDzUb8VamxngZCr9Sh86Sb3+hqn+/LgQkBMkCb0Jc//aYw=; Original-Received: from [84.212.220.105] (helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ngBja-0001fU-U7; Sun, 17 Apr 2022 22:43:07 +0200 In-Reply-To: (Richard Stanton's message of "Sun, 17 Apr 2022 13:16:26 -0700") 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:230132 Archived-At: Richard Stanton writes: > Put the cursor right at the start of the file, on the first double > quote, and press =E2=80=98, the single quote character. On my machine, Em= acs > now hangs and doesn=E2=80=99t respond to the keyboard. Without debug-on-e= rror, > this works just fine. I can reproduce this, too (on Debian/bookworm). `C-g' does work to break it, but then it just hangs again almost immediately, so I guess it's a problem in font-locking. But it's bizarre that the debug-on-error setting should affect this. I've skimmed through python.el looking for anything obvious (like a `condition-case-unless-debug' but can't find anything). The culprit must be in python-syntax-stringify -- if I just remove that, the hang is gone. But there's no odd error handling there that I can see (unless it's hiding in syntax-ppss)... anybody got any ideas? --=20 (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no