From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stephen Berman via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#69385: 30.0.50; Long lines with bidi text slow down Emacs Date: Mon, 26 Feb 2024 16:59:46 +0100 Message-ID: <87msrnfc7h.fsf@gmx.net> References: <878r381pjk.fsf@gmx.net> <86msrowk0g.fsf@gnu.org> <87zfvozaj7.fsf@gmx.net> <86edd0wdbs.fsf@gnu.org> <87r0h0z3fl.fsf@gmx.net> <868r37wgkx.fsf@gnu.org> <87zfvnfh4d.fsf@gmx.net> <86v86bux3w.fsf@gnu.org> <86ttlvuwxo.fsf@gnu.org> <87r0gzfe5a.fsf@gmx.net> <86r0gzusrx.fsf@gnu.org> Reply-To: Stephen Berman Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="5928"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: 69385@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Feb 26 17:11:46 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 1redZy-0001Lg-9u for geb-bug-gnu-emacs@m.gmane-mx.org; 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Mon, 26 Feb 2024 16:59:47 +0100 In-Reply-To: <86r0gzusrx.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 26 Feb 2024 17:52:50 +0200") X-Provags-ID: V03:K1:p1XSAHhkVkUuT253GGY6KqOLkPlYdI+RyBve82khN/vxYz7VJkb eYsXF7IkeJAc83fGkf0+IEK9A/zgOGRCwUnp2SrnV/QzouV7tnoA02bxAPIgttLXZmDAQsL 7oUno+XK54Rct/lyJasfG/Bmgy57iiB50nSUId3KBq8Bx4FSvgBDPiKnnyw/NVDDJ4uJlvp 8T+LN38TUiyewBvwZLOpg== UI-OutboundReport: notjunk:1;M01:P0:sej5Z7/+dpo=;10jL/T26ukjDZ5N49j0iUs++4l6 NKn9xNNvDlzmexghzuG80V/z12IhF+n7JIbpRNddQrU+M77qqYIX9FzZF9z3f+CLDe/eb9obQ jtqcI54xcJ7k2Gzm5eael1NNy08P14hH0ew01isBMXhAOyPQJxQmP/sjWvVJs3F737y99FufA RSIPh40h2gpwGnYOJ/mNtMsY+GD+wHIdLfBG1LaWm2jyphZMaSbVFbVwbeDXUcvf0aBsxKT31 QVGV8ydPwfI4zdcTuXqih4s6imJx8aFU4LKYdVzcAslj64rah3CPUg9E+jsHd2y7ZZbxl2tPm AMjRe6E1FxNPZoAqUKChIrm5S/i6oN9IQWZ3HnI9rj20GQTO165iPdmjBqYUVG6+syK2ImDIA DbfefZ7decrDRDoNmOPgijxY5uWn1Cper+cy3lVZxcyWXADXG1Ok3D2yNF/L54kVxsSeIt2tk 1nI/cI+ub2dVW4dUrzf0+uTzZ/eqqwU2WOwOrFlCeWsBbscfkjA+ZgwRdsbSGIs47Cv1Far45 5MtWmqm5oz2YvT21eJoTKvxBP+n09F1UCs2cOmieaVfAjY8KJrguvXBlXpgz8kJj738vlkAM7 oBSMoXyZ7ofdFIwBVJKABoDMVMDp/PiOylJqENEKlkND6bnRbNUmAQHo3rTmyvbL9FgT1/ZHB SHE2Vb+dFiveMgCF2UXLtV4QJaZV8Ol8ReKuUs7L8alxFsXAMIL/HsBj/ERld2Fn17pGesY7t q9do+M46341YRMl/GS6v0fa+TebyncU02UXJlxflowAknqzWNW/CjyRoNdCy1DOk7RlVNMN5 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:280677 Archived-At: On Mon, 26 Feb 2024 17:52:50 +0200 Eli Zaretskii wrote: >> From: Stephen Berman >> Cc: 69385@debbugs.gnu.org >> Date: Mon, 26 Feb 2024 16:17:53 +0100 >> >> On Mon, 26 Feb 2024 16:22:59 +0200 Eli Zaretskii wrote: >> >> >> Cc: 69385@debbugs.gnu.org >> >> Date: Mon, 26 Feb 2024 16:19:15 +0200 >> >> From: Eli Zaretskii >> >> >> >> > From: Stephen Berman >> >> > Cc: 69385@debbugs.gnu.org >> >> > Date: Mon, 26 Feb 2024 15:13:38 +0100 >> >> > >> >> > On Mon, 26 Feb 2024 14:33:18 +0200 Eli Zaretskii wr= ote: >> >> > >> >> > > The CPU is fast. My HarfBuzz version is much older, but I doubt= that >> >> > > HarfBuzz became so much slower for Arabic. So it's very strange= . But >> >> > > maybe it's worth to try downgrading to an earlier version, just = to be >> >> > > sure this is not the culprit? >> >> > >> >> > That's not so straightforward on this system, where I build system >> >> > packages from source, so downgrading HarfBuzz may require also >> >> > rebuilding packages that depend on it. I have a somewhat older sy= stem >> >> > on this machine with HarfBuzz 7.1.0, so I can easily try that. Wh= at >> >> > version of HarfBuzz are you using? >> >> >> >> I have 2.4.0 here. >> > >> > Btw, another possibility could be that this is specific to the Cairo >> > build. So maybe try a build without Cairo. >> >> I did, and the slowdown seems just as bad as in the build with Cairo. > > Can you try the emacs-29 branch? I already did and see the same slowdown with it as with master. (Or did you mean try emacs-29 without Cairo? That I haven't done, but given I saw no noticeable difference on master, I wouldn't expect to see one on emacs-29 either.) Steve Berman