From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Divya Ranjan via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#74281: 30.0.91; font-lock mode hangs on scrolling large Scheme file Date: Thu, 14 Nov 2024 09:32:12 +0000 Message-ID: <87frnu2mar.fsf@subvertising.org> References: <8734k0cs1u.fsf@subvertising.org> <86zfm2jjbo.fsf@gnu.org> Reply-To: Divya Ranjan 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="31412"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Stefan Monnier , 74281@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Nov 14 10:33:19 2024 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 1tBWE2-0007y0-O4 for geb-bug-gnu-emacs@m.gmane-mx.org; 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Thu, 14 Nov 2024 04:32:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=subvertising.org; s=stigmate; t=1731576742; bh=4ULopup4dfAzjr3ehLFpqTgCgdpKqRBecI8lo2E6B+Q=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=iuRWrUI9EUBhnP2tIc3QVXf74WLMAKXxTjYAe6lbSGxtUugFuOnmiZiAS5X85vC5d D4OIav/4qylRi0nsCOuyDoRAr1Zm/DEsaTFp0GnqQybM9ZksRrQmegfpIQQFuvc+qp Yt+RmsMUnrfG31DRXn6rHKNFF/z7XIBpxsmNSUS0= Original-Received: from mx2.investici.org (unknown [127.0.0.1]) by devianza.investici.org (Postfix) with ESMTP id 4Xpw0k3Gb7z6vH0; Thu, 14 Nov 2024 09:32:22 +0000 (UTC) Original-Received: from [198.167.222.108] (mx2.investici.org [198.167.222.108]) (Authenticated sender: divya@subvertising.org) by localhost (Postfix) with ESMTPSA id 4Xpw0j41HKz6v8q; Thu, 14 Nov 2024 09:32:21 +0000 (UTC) In-Reply-To: <86zfm2jjbo.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 14 Nov 2024 10:44:27 +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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:295320 Archived-At: Hello, Eli Eli Zaretskii writes: >> Date: Sat, 09 Nov 2024 16:04:13 +0000 >> From: Divya Ranjan via "Bug reports for GNU Emacs, >> the Swiss army knife of text editors" >>=20 >>=20 >> 1. In emacs -Q, open a fairly big Scheme file (> 70k) and try to move in >> the file with C-n, C-f or mouse scrolling. It sverely lags for several >> seconds, doesn=E2=80=99t even respond to C-g. > > I can only reproduce this with C-p when moving from the end of the > file. C-n and C-f are instantaneous here, even though this is an > unoptimized build of Emacs 30. I see, well its the latest build of emacs on GNU Guix, so yeah. Which lacki= ng features in particular do you think might be causing this? Regards, --=20 Divya Ranjan, Philosophy, Mathematics, Libre Software.