From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: backward-sexp throws scan-error "Unbalanced parentheses", but forward-sexp works Date: Wed, 12 Jan 2022 16:06:56 -0500 Message-ID: References: Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="12062"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:qnbo7R/gK2I8rZanM+gpekMO5c0= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Jan 12 22:09:00 2022 Return-path: Envelope-to: geh-help-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 1n7krc-0002zk-40 for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 12 Jan 2022 22:09:00 +0100 Original-Received: from localhost ([::1]:54466 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n7kra-00039P-Jw for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 12 Jan 2022 16:08:58 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:50542) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n7kpm-00037p-6i for help-gnu-emacs@gnu.org; Wed, 12 Jan 2022 16:07:06 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:43324) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n7kpk-0000bg-OJ for help-gnu-emacs@gnu.org; Wed, 12 Jan 2022 16:07:05 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1n7kpi-0000ZM-Ax for help-gnu-emacs@gnu.org; Wed, 12 Jan 2022 22:07:02 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:135249 Archived-At: ndame via Users list for the GNU Emacs text editor [2022-01-12 17:33:12] wrote: >> I suspect scrolling through the file fixes it, so it might be connected to fontification? > Looks like it is connected to fontification, because I browsed through the > items of the list and at one point it switches to string syntax for no > reason, and I guess that causes the problem. > > See the attached screenshot. Sounds like a bug in the `syntax-propertize-function` of the major mode you're using (or otherwise a bug elsewhere in that mode where it touches the `syntax-table` text property). You might want to open a bug report (against the major mode) and give as much info as you can (of course a reproducible recipe is ideal, but it might be tricky to come up with one). Stefan