Received: (at 71454) by debbugs.gnu.org; 10 Jun 2024 15:12:13 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Jun 10 11:12:13 2024 Received: from localhost ([127.0.0.1]:40724 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1sGggu-0003aZ-QH for submit <at> debbugs.gnu.org; Mon, 10 Jun 2024 11:12:13 -0400 Received: from eggs.gnu.org ([209.51.188.92]:47768) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1sGggt-0003Zs-En for 71454 <at> debbugs.gnu.org; Mon, 10 Jun 2024 11:12:11 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1sGecs-0004Sd-8r; Mon, 10 Jun 2024 08:59:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=kHLdgt/zWggnrY4ek6iwFlZVfvJ5Pw/mRFsWXzrZGNM=; b=MrqijuwDnc9K Trxc8EKtI/elRyFRvz69AQ6J78ZMemU7gujOuKJPfsarbDE4rRg8whwA85/5ywD4GrQSIu3/oDvf6 CbH5hy2lke894w4Vl0pa3bx3B3GK9dwaUYxiunx13fRDNQ95rUV179UjXt4DcP9pTHOL5nxkLA1KN CGwNAkaF2XGr2nsel4dwfVK331epQzzPchS8miXKUrDsKJyAp9j/Ohg9kaKuI/WJG+R1VUrFjXEXn czYjuH/YK/mbcN4IH5f6hLvkF/rVd1Bne+UFIpPM43D1ITjXXrOyZz2tszcAcOOsOLDZIPEO2DdZL Q0fXQKqcpVq4qS9gevppEA==; Date: Mon, 10 Jun 2024 15:59:52 +0300 Message-Id: <86sexl7y2f.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Kai Ma <justksqsf@HIDDEN> In-Reply-To: <4F59591A-23F6-4DB2-A350-52ED24408F39@HIDDEN> (message from Kai Ma on Mon, 10 Jun 2024 14:35:50 +0200) Subject: Re: bug#71454: 30.0.50; Performance issues with font selection References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> <87v82h6a33.fsf@HIDDEN> <ABE7BD02-131A-4F53-979B-4D8B46C96B89@HIDDEN> <865xuh9fmt.fsf@HIDDEN> <4F59591A-23F6-4DB2-A350-52ED24408F39@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 71454 Cc: jb@HIDDEN, 71454 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Kai Ma <justksqsf@HIDDEN> > Date: Mon, 10 Jun 2024 14:35:50 +0200 > Cc: Jeremy Bryant <jb@HIDDEN>, > 71454 <at> debbugs.gnu.org > > > > > On Jun 10, 2024, at 13:55, Eli Zaretskii <eliz@HIDDEN> wrote: > > > >> Cc: 71454 <at> debbugs.gnu.org > >> From: Kai Ma <justksqsf@HIDDEN> > >> Date: Mon, 10 Jun 2024 00:17:55 +0200 > >> > >> > >>> On Jun 10, 2024, at 00:10, Jeremy Bryant <jb@HIDDEN> wrote: > >>> > >>> Would you be able to provide a self-contained series of steps starting > >>> from emacs -Q? > >> > >> On my machine it is extremely easy to reproduce by simply: > >> > >> 1. emacs -Q > >> 2. Switch to *scratch* > >> 3. Copy the provided text into *scratch* > >> 4. Emacs will freeze for 17 seconds or so, and it cannot be interrupted by C-g > > > > I cannot reproduce this, I get an almost instantaneous redisplay with > > those characters. > > > > When your Emacs eventually displays the text, how many characters are > > shown as boxes with hex code, and which ones are those? > > None are hex code here. They eventually get displayed, but it takes a long time. Then it definitely sounds like macOS specific. Does anyone know how Emacs on macOS searches for fonts, and whether there are any font-caching facilities, either in Emacs or by the OS?
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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Date: Mon, 10 Jun 2024 16:03:41 +0300
Message-Id: <86r0d57xw2.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
To: Kai Ma <justksqsf@HIDDEN>
In-Reply-To: <B7AE53E3-194C-4E87-AC9D-9707740973A1@HIDDEN> (message from
Kai Ma on Mon, 10 Jun 2024 14:34:42 +0200)
Subject: Re: bug#71454: 30.0.50; Performance issues with font selection
References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN>
<864ja19fhy.fsf@HIDDEN> <B7AE53E3-194C-4E87-AC9D-9707740973A1@HIDDEN>
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> From: Kai Ma <justksqsf@HIDDEN>
> Date: Mon, 10 Jun 2024 14:34:42 +0200
> Cc: 71454 <at> debbugs.gnu.org
>
> I currently use the following config:
>
> (set-fontset-font t 'han "PingFang TC")
> (set-fontset-font t 'kana "PingFang TC")
> (set-fontset-font t 'kanbun "PingFang TC")
> (set-fontset-font t 'hangul "PingFang TC")
> (set-fontset-font t 'cjk-misc "PingFang TC")
> (set-fontset-font t 'unicode "PingFang TC" nil 'append)
> (set-fontset-font t 'unicode (font-spec :family "Apple Color Emoji") nil 'prepend)
> (dolist (thfont '("TH-Feon" "TH-Sy-P0" "TH-Sy-P2" "TH-Sy-P16" "TH-Tshyn-P0"))
> (set-fontset-font t 'unicode thfont nil 'append))
>
> PingFang TC and Apple Color Emoji are built into macOS, and TH-* fonts are from the Internet to cover a
> majority of the Unicode code points.
>
> For example, 〡〢〣〤〥〦〨〩〸〹〺 belongs to cjk-misc script, and I have to specify a font for it to avoid
> delays.
FWIW, I get instantaneous display when I copy/paste that text into an
"emacs -Q" I just started, even though I have no fonts for the last 3
characters (which means Emacs searches all the fonts installed on the
system).
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
Full text available.Received: (at 71454) by debbugs.gnu.org; 10 Jun 2024 15:12:12 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Jun 10 11:12:12 2024 Received: from localhost ([127.0.0.1]:40717 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1sGggt-0003aN-Uz for submit <at> debbugs.gnu.org; Mon, 10 Jun 2024 11:12:12 -0400 Received: from eggs.gnu.org ([209.51.188.92]:47768) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1sGggr-0003Zs-Gw for 71454 <at> debbugs.gnu.org; Mon, 10 Jun 2024 11:12:10 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1sGdl7-0001lZ-TI; Mon, 10 Jun 2024 08:04:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=7Tf34DzJAws3Tscz5G5dIojoTWwbzb+ztS4Ds4TRLf8=; b=JfOnV5TUtxOnE+IAUnno lpHC7npJbH7te4ij3wreenUnGLXrhPING9EHQL+2dv22RKmN3tM3UIj7TTQJa4nZYulL66hNYF5om EwMYrb6OxwKOJIc/F/WBowQ27hx8NhBbeTgP3tZhC3OBq2xSH8YqGMZg3PC7D6su9oZxu1wazn48Q fHUoC6/piOxiVl2vwtIwaQNxkmj11SsJE2uX+VWPhA2Iar0bE3JtIdOLhb0+AWz/yxy6TU9ZiFjWi E0VdfUZ4HyUd8HTk8BSbe0SehJDjxyx6T5iE3KpAip5CQdaHj56eOa6JdjT11hfI0lVyjD014QEcZ ZpLvul1macwOXA==; Date: Mon, 10 Jun 2024 15:04:18 +0300 Message-Id: <8634pl9f7h.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Kai Ma <justksqsf@HIDDEN> In-Reply-To: <2AF3BA0C-B04D-45C9-8C83-4AF97BF20156@HIDDEN> (message from Kai Ma on Mon, 10 Jun 2024 04:14:40 +0200) Subject: Re: bug#71454: 30.0.50; Performance issues with font selection References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> <87v82h6a33.fsf@HIDDEN> <ABE7BD02-131A-4F53-979B-4D8B46C96B89@HIDDEN> <87r0d568ze.fsf@HIDDEN> <2AF3BA0C-B04D-45C9-8C83-4AF97BF20156@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 71454 Cc: jb@HIDDEN, 71454 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Cc: 71454 <at> debbugs.gnu.org > From: Kai Ma <justksqsf@HIDDEN> > Date: Mon, 10 Jun 2024 04:14:40 +0200 > > > > > On Jun 10, 2024, at 00:34, Jeremy Bryant <jb@HIDDEN> wrote: > > > > Kai Ma <justksqsf@HIDDEN> writes: > > > >>> On Jun 10, 2024, at 00:10, Jeremy Bryant <jb@HIDDEN> wrote: > >>> > >>> Would you be able to provide a self-contained series of steps starting > >>> from emacs -Q? > >> > >> On my machine it is extremely easy to reproduce by simply: > >> > >> 1. emacs -Q > >> 2. Switch to *scratch* > >> 3. Copy the provided text into *scratch* > >> 4. Emacs will freeze for 17 seconds or so, and it cannot be interrupted by C-g > > > > I am unable to reproduce this bug. > > > > Please could you specify exactly which version of Emacs you are using? > > I’m using Emacs master branch (commit 7f8ded2a85d) on macOS. Maybe this is specific to the macOS font back-end, which AFAIU is a special one used only on macOS.
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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Content preview: > On Jun 10, 2024, at 13:55, Eli Zaretskii wrote: > >> Cc: 71454 <at> debbugs.gnu.org >> From: Kai Ma >> Date: Mon, 10 Jun 2024 00:17:55 +0200 >> >> >>> On Jun 10, 2024, at 00:10, Jeremy Bryant wrote [...] Content analysis details: (1.8 points, 10.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.3 RCVD_IN_VALIDITY_RPBL RBL: Relay in Validity RPBL, https://senderscore.org/blocklistlookup/ [209.85.218.68 listed in bl.score.senderscore.com] 0.5 FROM_LOCAL_NOVOWEL From: localpart has series of non-vowel letters -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (justksqsf[at]gmail.com) 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [209.85.218.68 listed in wl.mailspike.net] -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [209.85.218.68 listed in list.dnswl.org] -0.0 T_SCC_BODY_TEXT_LINE No description available. 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-Debbugs-Envelope-To: 71454 Cc: Jeremy Bryant <jb@HIDDEN>, 71454 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: 0.8 (/) > On Jun 10, 2024, at 13:55, Eli Zaretskii <eliz@HIDDEN> wrote: >=20 >> Cc: 71454 <at> debbugs.gnu.org >> From: Kai Ma <justksqsf@HIDDEN> >> Date: Mon, 10 Jun 2024 00:17:55 +0200 >>=20 >>=20 >>> On Jun 10, 2024, at 00:10, Jeremy Bryant <jb@HIDDEN> = wrote: >>>=20 >>> Would you be able to provide a self-contained series of steps = starting >>> from emacs -Q? >>=20 >> On my machine it is extremely easy to reproduce by simply: >>=20 >> 1. emacs -Q >> 2. Switch to *scratch* >> 3. Copy the provided text into *scratch* >> 4. Emacs will freeze for 17 seconds or so, and it cannot be = interrupted by C-g >=20 > I cannot reproduce this, I get an almost instantaneous redisplay with > those characters. >=20 > When your Emacs eventually displays the text, how many characters are > shown as boxes with hex code, and which ones are those? None are hex code here. They eventually get displayed, but it takes a = long time.
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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From: Kai Ma <justksqsf@HIDDEN>
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Subject: Re: bug#71454: 30.0.50; Performance issues with font selection
Date: Mon, 10 Jun 2024 14:34:42 +0200
In-Reply-To: <864ja19fhy.fsf@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN>
<864ja19fhy.fsf@HIDDEN>
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> On Jun 10, 2024, at 13:58, Eli Zaretskii <eliz@HIDDEN> wrote:
>=20
>> From: Kai Ma <justksqsf@HIDDEN>
>> Date: Sun, 9 Jun 2024 20:56:47 +0200
>>=20
>> I have currently (length (font-family-list)) =3D 582 font families
>> installed. And whenever I input some ununsual characters, Emacs will
>> freeze for seconds until I am able to do anything else. Worse, the
>> freeze delay for each character will add up. And whenver the face
>> changes (including hl-line-mode), or I switched to another buffer for
>> some time, there will be a delay again.
>=20
> FTR, I have 553 font families, and I see no significant delay when
> pasting the characters you show.
>=20
>> I'm pretty sure this is due to font selection, because Emacs won't
>> freeze if I configure manually the fallback fonts for each 'exotic'
>> script I encounter.
>=20
> If this is the case, please tell the details: which fonts you need to
> configure manually to eliminate the delay.
I currently use the following config:
(set-fontset-font t 'han "PingFang TC")
(set-fontset-font t 'kana "PingFang TC")
(set-fontset-font t 'kanbun "PingFang TC")
(set-fontset-font t 'hangul "PingFang TC")
(set-fontset-font t 'cjk-misc "PingFang TC")
(set-fontset-font t 'unicode "PingFang TC" nil 'append)
(set-fontset-font t 'unicode (font-spec :family "Apple Color Emoji") nil =
'prepend)
(dolist (thfont '("TH-Feon" "TH-Sy-P0" "TH-Sy-P2" "TH-Sy-P16" =
"TH-Tshyn-P0"))
(set-fontset-font t 'unicode thfont nil 'append))
PingFang TC and Apple Color Emoji are built into macOS, and TH-* fonts =
are from the Internet to cover a majority of the Unicode code points.
For example, =E3=80=A1=E3=80=A2=E3=80=A3=E3=80=A4=E3=80=A5=E3=80=A6=E3=80=A8=
=E3=80=A9=E3=80=B8=E3=80=B9=E3=80=BA belongs to cjk-misc script, and I =
have to specify a font for it to avoid delays.
--Apple-Mail=_9CBA96E5-C9CE-4A82-9857-D001026F06EB
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
charset=utf-8
<html><head><meta http-equiv=3D"content-type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"overflow-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;"><br =
id=3D"lineBreakAtBeginningOfMessage"><div><br><blockquote =
type=3D"cite"><div>On Jun 10, 2024, at 13:58, Eli Zaretskii =
<eliz@HIDDEN> wrote:</div><br =
class=3D"Apple-interchange-newline"><div><div><blockquote =
type=3D"cite">From: Kai Ma <justksqsf@HIDDEN><br>Date: Sun, 9 =
Jun 2024 20:56:47 +0200<br><br>I have currently (length =
(font-family-list)) =3D 582 font families<br>installed. And whenever I =
input some ununsual characters, Emacs will<br>freeze for seconds until I =
am able to do anything else. Worse, the<br>freeze delay for each =
character will add up. And whenver the face<br>changes (including =
hl-line-mode), or I switched to another buffer for<br>some time, there =
will be a delay again.<br></blockquote><br>FTR, I have 553 font =
families, and I see no significant delay when<br>pasting the characters =
you show.<br><br><blockquote type=3D"cite">I'm pretty sure this is due =
to font selection, because Emacs won't<br>freeze if I configure manually =
the fallback fonts for each 'exotic'<br>script I =
encounter.<br></blockquote><br>If this is the case, please tell the =
details: which fonts you need to<br>configure manually to eliminate the =
delay.<br></div></div></blockquote></div><div><br></div><div>I currently =
use the following config:</div><br><div><div>(set-fontset-font t 'han =
"PingFang TC")</div><div>(set-fontset-font t 'kana "PingFang =
TC")</div><div>(set-fontset-font t 'kanbun "PingFang =
TC")</div><div>(set-fontset-font t 'hangul "PingFang =
TC")</div><div>(set-fontset-font t 'cjk-misc "PingFang =
TC")</div><div>(set-fontset-font t 'unicode "PingFang TC" nil =
'append)</div><div>(set-fontset-font t 'unicode (font-spec :family =
"Apple Color Emoji") nil 'prepend)</div><div>(dolist (thfont '("TH-Feon" =
"TH-Sy-P0" "TH-Sy-P2" "TH-Sy-P16" "TH-Tshyn-P0"))</div><div> =
(set-fontset-font t 'unicode thfont nil =
'append))</div></div><div><br></div><div>PingFang TC and Apple Color =
Emoji are built into macOS, and TH-* fonts are from the Internet to =
cover a majority of the Unicode code =
points.</div><div><br></div><div>For example, <span =
style=3D"font-family: Menlo-Regular;">=E3=80=A1=E3=80=A2=E3=80=A3=E3=80=A4=
=E3=80=A5=E3=80=A6=E3=80=A8=E3=80=A9=E3=80=B8=E3=80=B9=E3=80=BA belongs =
to cjk-misc script, and I have to specify a font for it to avoid =
delays.</span></div><div><br></div></body></html>=
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bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
Full text available.Received: (at 71454) by debbugs.gnu.org; 10 Jun 2024 12:10:39 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Jun 10 08:10:39 2024 Received: from localhost ([127.0.0.1]:58111 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1sGdrC-00032N-N6 for submit <at> debbugs.gnu.org; Mon, 10 Jun 2024 08:10:39 -0400 Received: from eggs.gnu.org ([209.51.188.92]:42050) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1sGdfO-00084R-QA for 71454 <at> debbugs.gnu.org; Mon, 10 Jun 2024 07:58:27 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1sGdf2-0000FY-7M; Mon, 10 Jun 2024 07:58:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=TPYmNwTRcJLLbdojTtLmqRTFQAVgGHMWA6jvKFqQ+0g=; b=btURYVEKpugC wQ9qce3P98lYSnBY5H359zATiowPU8kep61PaWCW9Ma+NVbMuLV/HPTPallqxzskCq7UQ/brCR4zL b8uTvn5r5OiEu/DD8bgMLQ/c3p/zePHNe9AXQ5xiPx1FSXTKIjPe56SNCgXOVlLlGQaOuKhfeIBN8 gCR1mtjO7BAOJi1Sm7uNbxseQmM1k4Rwd7RbRBKUnKB2fKXB9hEl2jQioCTGWgckDmn8rhamZCYrj o4rkN8oygXRFy8ZvlYUksiVCZ0nGBYe1u3wDpbtVm4dCbU+wF29OVaiQW6y4wM8B0oGEWh680IZ+s O50wu5wxrL0gTzKOQX+dQg==; Date: Mon, 10 Jun 2024 14:58:01 +0300 Message-Id: <864ja19fhy.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Kai Ma <justksqsf@HIDDEN> In-Reply-To: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> (message from Kai Ma on Sun, 9 Jun 2024 20:56:47 +0200) Subject: Re: bug#71454: 30.0.50; Performance issues with font selection References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 71454 Cc: 71454 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Kai Ma <justksqsf@HIDDEN> > Date: Sun, 9 Jun 2024 20:56:47 +0200 > > I have currently (length (font-family-list)) = 582 font families > installed. And whenever I input some ununsual characters, Emacs will > freeze for seconds until I am able to do anything else. Worse, the > freeze delay for each character will add up. And whenver the face > changes (including hl-line-mode), or I switched to another buffer for > some time, there will be a delay again. FTR, I have 553 font families, and I see no significant delay when pasting the characters you show. > I'm pretty sure this is due to font selection, because Emacs won't > freeze if I configure manually the fallback fonts for each 'exotic' > script I encounter. If this is the case, please tell the details: which fonts you need to configure manually to eliminate the delay.
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
Full text available.Eli Zaretskii <eliz@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 71454) by debbugs.gnu.org; 10 Jun 2024 11:58:30 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Jun 10 07:58:30 2024 Received: from localhost ([127.0.0.1]:57392 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1sGdfR-000856-OM for submit <at> debbugs.gnu.org; Mon, 10 Jun 2024 07:58:30 -0400 Received: from eggs.gnu.org ([209.51.188.92]:42050) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1sGdfQ-00084R-66; Mon, 10 Jun 2024 07:58:28 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1sGdal-0007mk-5b; Mon, 10 Jun 2024 07:53:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=Z/yiZ3K0bc+FDCRR6iHb4MqKID+8oR1J1UUeVx9Hnx4=; b=liK2Gplensr0KLoCLz71 XEz45hKIyKsKbUdAsigrfH8oanwpQGXnVgX+0s4L2eKjht+FN8SEsG/xDyogO0viHbclT0k0foyKL FzDX27e+OEg+pra/Wu5+mGP1J6h0tlAyOOw6IoAW4F+qWMG9fbClY6ZvTuSCa1+0sr/sHO0+//AwI 27zIZ+uhxj/ZrEwK1iUYBqhFAUDLKv3RSnjhG/rjGhHsYhDnunXTFcnXGOUMZHtTzz7r1FxEaW26G w5tTodqj5TO8I3nMLy63LsbGsW/Xzo762CqWz8aA3b+CX1ebYLzO8Vt9DF6EpkIjk9JS6PkvteyyB ii9hvhrNnM6gTw==; Date: Mon, 10 Jun 2024 14:53:36 +0300 Message-Id: <867cex9fpb.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Kai Ma <justksqsf@HIDDEN> In-Reply-To: <F814273E-4A20-46BC-88C9-37538C4DFAB9@HIDDEN> (message from Kai Ma on Mon, 10 Jun 2024 04:18:08 +0200) Subject: Re: bug#71454: 30.0.50; Performance issues with font selection References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> <87v82h6a33.fsf@HIDDEN> <ABE7BD02-131A-4F53-979B-4D8B46C96B89@HIDDEN> <f4756916-dfe8-2c21-95f6-f3f2ee516d42@HIDDEN> <F814273E-4A20-46BC-88C9-37538C4DFAB9@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 71454 Cc: jporterbugs@HIDDEN, jb@HIDDEN, 71454 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) severity 71454 wishlist thanks > Cc: Jeremy Bryant <jb@HIDDEN>, 71454 <at> debbugs.gnu.org > From: Kai Ma <justksqsf@HIDDEN> > Date: Mon, 10 Jun 2024 04:18:08 +0200 > > > On Jun 10, 2024, at 01:10, Jim Porter <jporterbugs@HIDDEN> wrote: > > > > On 6/9/2024 3:17 PM, Kai Ma wrote: > >>> On Jun 10, 2024, at 00:10, Jeremy Bryant <jb@HIDDEN> wrote: > >>> > >>> Would you be able to provide a self-contained series of steps starting > >>> from emacs -Q? > >> On my machine it is extremely easy to reproduce by simply: > >> 1. emacs -Q > >> 2. Switch to *scratch* > >> 3. Copy the provided text into *scratch* > >> 4. Emacs will freeze for 17 seconds or so, and it cannot be interrupted by C-g > > > > Is this on MS-Windows, by chance? Using a different set of steps, I can reproduce this issue on MS-Windows (Emacs 29.3), but not on GNU/Linux. Here's what I did: > > > > emacs -Q > > C-h v comint-password-prompt-regexp RET > > > I’m using macOS. I apologize for not adding this info to my original report. > > And yes, I can also reproduce the issue with C-h v comint-password-prompt-regexp RET AFAICT, the problematic part of comint-password-prompt-regexp is this: गुप्तशब्द\\|शब्दकूट\\|গুপ্তশব্দ\\|পাসওয়ার্ড\\|ਪਾਸਵਰਡ\\|પાસવર્ડ\\|ପ୍ରବେଶ ସଙ୍କେତ\\|கடவுச்சொல்\\|సంకేతపదము\\|ಗುಪ್ತಪದ\\|അടയാളവാക്ക്\\|රහස්පදය This has nothing to do with the number of fonts installed on the system, nor with how Emacs searches for fonts, nor even with the fonts themselves. On my system, all of the characters above are displayed using the same single font. And yet, even if I insert just a single character of those, which causes Emacs to find and load that font, pasting the rest of the string takes several seconds in an unoptimized build (I expect it to take about 2 sec or less in an optimized build). Note that if you then paste the same string over and over again, the display is instantaneous. My crystal ball says that the expensive part here is character composition. The above characters belong to scripts that require extensive composition rules, take a look at indian.el and its complex regexps. Displaying those characters requires the display code to examine all those regexps, to find the largest composable sequence, then generate the compositions by calling into Lisp, which then calls back into C where we call HarfBuzz to produce the font glyphs for the compositions. This is expensive, and so Emacs caches each composition for further use, which explains why subsequent pastes are much faster. IOW, this is a price we pay for the fact that we make character compositions infinitely customizable on the Lisp level. So far, I see no bug here. Of course, if someone wants to work on redesign of how Emacs handles character composition, and as part of such a redesign will make the process much faster, that would be very welcome.
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
Full text available.Received: (at 71454) by debbugs.gnu.org; 10 Jun 2024 11:58:29 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Jun 10 07:58:29 2024 Received: from localhost ([127.0.0.1]:57390 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1sGdfR-000854-C7 for submit <at> debbugs.gnu.org; Mon, 10 Jun 2024 07:58:29 -0400 Received: from eggs.gnu.org ([209.51.188.92]:42050) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1sGdfP-00084R-DF for 71454 <at> debbugs.gnu.org; Mon, 10 Jun 2024 07:58:27 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1sGdcC-00088U-0z; Mon, 10 Jun 2024 07:55:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=gbRsGWdP2AGN+cZKoTvdod1vIUN5Jk6/7PJlCJNeCEo=; b=FAR52q0dEvCT zZXEPbFicKfPcdck9JUTxLDU5jl615YuaodAOC3aPzmzkM0Srv8MZKZaGBGZtfC6R/TuCE9YYqbn0 xXZt4sj1gjXvvzMljNSFKKLKhjgTjLxPsN3KI+xR71As4lNfrd1dgeU8x2yJe9GcuMsS/MbYHkyaf IgyIh90qeAKUXrv4iM+jai+E+FGz8+JeL05Zm7WQYIUlir5f/5g1YlSHbx24Qrm2fddAPmu5a2QdA AHbOW9LthDdvqt7xZkJFiEgb9nXXjq+epNMY3RCiw2RSv1HP++eAEhQoWzt3Wtrj4hbIaP4mnjt6y 6TNWYS9UC4VxIisuZZy9fg==; Date: Mon, 10 Jun 2024 14:55:06 +0300 Message-Id: <865xuh9fmt.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Kai Ma <justksqsf@HIDDEN> In-Reply-To: <ABE7BD02-131A-4F53-979B-4D8B46C96B89@HIDDEN> (message from Kai Ma on Mon, 10 Jun 2024 00:17:55 +0200) Subject: Re: bug#71454: 30.0.50; Performance issues with font selection References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> <87v82h6a33.fsf@HIDDEN> <ABE7BD02-131A-4F53-979B-4D8B46C96B89@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 71454 Cc: jb@HIDDEN, 71454 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Cc: 71454 <at> debbugs.gnu.org > From: Kai Ma <justksqsf@HIDDEN> > Date: Mon, 10 Jun 2024 00:17:55 +0200 > > > > On Jun 10, 2024, at 00:10, Jeremy Bryant <jb@HIDDEN> wrote: > > > > Would you be able to provide a self-contained series of steps starting > > from emacs -Q? > > On my machine it is extremely easy to reproduce by simply: > > 1. emacs -Q > 2. Switch to *scratch* > 3. Copy the provided text into *scratch* > 4. Emacs will freeze for 17 seconds or so, and it cannot be interrupted by C-g I cannot reproduce this, I get an almost instantaneous redisplay with those characters. When your Emacs eventually displays the text, how many characters are shown as boxes with hex code, and which ones are those?
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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Switch to *scratch* >> 3. Copy the provided text into *scratch* >> 4. Emacs will freeze for 17 seconds or so, and it cannot be = interrupted by C-g >=20 > Is this on MS-Windows, by chance? Using a different set of steps, I = can reproduce this issue on MS-Windows (Emacs 29.3), but not on = GNU/Linux. Here's what I did: >=20 > emacs -Q > C-h v comint-password-prompt-regexp RET I=E2=80=99m using macOS. I apologize for not adding this info to my = original report. And yes, I can also reproduce the issue with C-h v = comint-password-prompt-regexp RET=
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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Switch to *scratch* >> 3. Copy the provided text into *scratch* >> 4. Emacs will freeze for 17 seconds or so, and it cannot be = interrupted by C-g >=20 > I am unable to reproduce this bug. >=20 > Please could you specify exactly which version of Emacs you are using? I=E2=80=99m using Emacs master branch (commit 7f8ded2a85d) on macOS.
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
Full text available.Received: (at 71454) by debbugs.gnu.org; 9 Jun 2024 22:35:45 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun Jun 09 18:35:45 2024 Received: from localhost ([127.0.0.1]:36699 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1sGR8b-0002ij-E2 for submit <at> debbugs.gnu.org; Sun, 09 Jun 2024 18:35:45 -0400 Received: from out-178.mta1.migadu.com ([95.215.58.178]:36702) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <jb@HIDDEN>) id 1sGR8Y-0002i3-Qf for 71454 <at> debbugs.gnu.org; Sun, 09 Jun 2024 18:35:43 -0400 X-Envelope-To: 71454 <at> debbugs.gnu.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jeremybryant.net; s=key1; t=1717972488; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=6mGsoDoIkilyflijiJcKbar3JOLfmS+NvydVOLefm+U=; b=nQWSt8HnrbBrpuvMpcr3lLKO2Dcxfr965urptzdLTtbKadMfdTp+65x0zAyADK3vys/Suj 1/VG93A3LCX7NSokvju1lC6VfJh/JEc7M4+Ila4zmSCFbzeb/LmMwOCJxc2Vu8dJJqHWad EU/X0lb+rNXz67fNvxdZEaD1kHcv1KxFkcorfAhmakVXXPwyeHY8XW3hN6Rps5bnU1T4kJ tq85Gayh6Zdx8b1KvpyFCz/sGCwojyWHY/Gd/xxmSYlh45chzl8lVXYAe34PVcNCI2yoAk eO0dUhTIPKzN7z2QU9I1+3kHFJlRSWLAiN0UmkSCbOTR0rHyvvBaH91l96Dr4w== X-Envelope-To: justksqsf@HIDDEN X-Report-Abuse: Please report any abuse attempt to abuse@HIDDEN and include these headers. From: Jeremy Bryant <jb@HIDDEN> To: Kai Ma <justksqsf@HIDDEN> Subject: Re: bug#71454: 30.0.50; Performance issues with font selection In-Reply-To: <ABE7BD02-131A-4F53-979B-4D8B46C96B89@HIDDEN> (Kai Ma's message of "Mon, 10 Jun 2024 00:17:55 +0200") References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> <87v82h6a33.fsf@HIDDEN> <ABE7BD02-131A-4F53-979B-4D8B46C96B89@HIDDEN> Date: Sun, 09 Jun 2024 23:34:45 +0100 Message-ID: <87r0d568ze.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain X-Migadu-Flow: FLOW_OUT X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 71454 Cc: 71454 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Kai Ma <justksqsf@HIDDEN> writes: >> On Jun 10, 2024, at 00:10, Jeremy Bryant <jb@HIDDEN> wrote: >> >> Would you be able to provide a self-contained series of steps starting >> from emacs -Q? > > On my machine it is extremely easy to reproduce by simply: > > 1. emacs -Q > 2. Switch to *scratch* > 3. Copy the provided text into *scratch* > 4. Emacs will freeze for 17 seconds or so, and it cannot be interrupted by C-g I am unable to reproduce this bug. Please could you specify exactly which version of Emacs you are using?
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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From: Jeremy Bryant <jb@HIDDEN> To: Kai Ma <justksqsf@HIDDEN> Subject: Re: bug#71454: 30.0.50; Performance issues with font selection In-Reply-To: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> (Kai Ma's message of "Sun, 9 Jun 2024 20:56:47 +0200") References: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> Date: Sun, 09 Jun 2024 23:10:56 +0100 Message-ID: <87v82h6a33.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 X-Migadu-Flow: FLOW_OUT X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 71454 Cc: 71454 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) S2FpIE1hIDxqdXN0a3Nxc2ZAZ21haWwuY29tPiB3cml0ZXM6DQoNCj4gUmVjZW50bHksIEkgaGF2 ZSB0aGUgbmVlZCBvZiBlZGl0aW5nIGZpbGVzIHdpdGggZXh0cmFvcmRpbmFyeSByYW5nZXMgb2YN Cj4gVW5pY29kZSBjb2RlIHBvaW50cywgYW5kIHRoZSBwZXJmb3JtYW5jZSBwcm9ibGVtIHdpdGgg Zm9udCBzZWxlY3Rpb24NCj4gYmVjb21lcyB0b28gb2J2aW91cyB0byBpZ25vcmUuDQo+DQo+IEkg aGF2ZSBjdXJyZW50bHkgKGxlbmd0aCAoZm9udC1mYW1pbHktbGlzdCkpID0gNTgyIGZvbnQgZmFt aWxpZXMNCj4gaW5zdGFsbGVkLiBBbmQgd2hlbmV2ZXIgSSBpbnB1dCBzb21lIHVudW5zdWFsIGNo YXJhY3RlcnMsIEVtYWNzIHdpbGwNCj4gZnJlZXplIGZvciBzZWNvbmRzIHVudGlsIEkgYW0gYWJs ZSB0byBkbyBhbnl0aGluZyBlbHNlLiAgV29yc2UsIHRoZQ0KPiBmcmVlemUgZGVsYXkgZm9yIGVh Y2ggY2hhcmFjdGVyIHdpbGwgYWRkIHVwLiAgQW5kIHdoZW52ZXIgdGhlIGZhY2UNCj4gY2hhbmdl cyAoaW5jbHVkaW5nIGhsLWxpbmUtbW9kZSksIG9yIEkgc3dpdGNoZWQgdG8gYW5vdGhlciBidWZm ZXIgZm9yDQo+IHNvbWUgdGltZSwgdGhlcmUgd2lsbCBiZSBhIGRlbGF5IGFnYWluLg0KPg0KPiBJ J20gcHJldHR5IHN1cmUgdGhpcyBpcyBkdWUgdG8gZm9udCBzZWxlY3Rpb24sIGJlY2F1c2UgRW1h Y3Mgd29uJ3QNCj4gZnJlZXplIGlmIEkgY29uZmlndXJlIG1hbnVhbGx5IHRoZSBmYWxsYmFjayBm b250cyBmb3IgZWFjaCAnZXhvdGljJw0KPiBzY3JpcHQgSSBlbmNvdW50ZXIuDQo+DQo+IEZvciB0 ZXN0aW5nLCB0aGVyZSBhcmUgc29tZSBzdWNoIGNoYXJhY3RlcnMgaW4gbXkgZmlsZToNCj4NCj4g 44Ch44Ci44Cj44Ck44Cl44Cm44Co44Cp44C444C544C6DQo+DQo+IFvFqywgw7osIMWxLCDHlCwg w7ksIMiVLCDDuywgxa0sIMiXLCDDvCwgx5YsIMeYLCDHmiwgx5wsIMWvLCDFqSwg4bWkLCDhtZgs IMqJLCDhtrYsIOG7pywgxbMsIOG5tywg4bulLA0KPiDhubMsIOG5tSwgxrAsIMqKLCDhtrcsIOG1 vywg4baZLCDhubssIOG5uSwg4bupLCDhu6ssIOG7rywg4butLCDhu7EsIOqtkiwg6q2fLCDqnbgs IOqtjiwg6q2PLCDhtJ0sIOG1mSwg4bSeXQ0KPg0KPiBbw7wsIMeWLCDHmCwgx5osIMecLCDhub0s IOG1mywg4bWlLCDhub8sIOqdnywgyossIOG2uSwg4baMLCDisbQsIOKxsSwg4bu9LCDKjCwg4ba6 XQ0KPg0KPiBbw5wsIMeVLCDHlywgx5ksIMebLCDhubwsIOG0oCwg4rG9LCDhub4sIOqdniwgxrIs IOG7vCwgyYUgXQ0KPg0KPiBbIOKCgCwg4oKBLCDigoIsIOKCgywg4oKELCDigoUsIOKChiwg4oKH LCDigogsIOKCiSwg4oKKLCDigossIOKCjCwg4oKNLCDigo4sIOKAuCwg4bSALCDigpAsIOG0gSwg ypksIOG0gywg4bWmLCDhtIQsIOG0kCwg4bSSLCDhtIUsIOG0hiwg4bSHLCDigpEsIOKClCwg4bWp LCDJoiwgypssIOG0piwg4bWnLCDKnCwg4oKVLCDJqiwg4bW7LCDhtaIsIOG0iiwg4rG8LCDhtIss IOKCliwgyp8sIOKClywg4bSMLCDhtKcsIOG0jSwg4oKYLCDqn7osIMm0LCDhtI4sIOKCmSwg4bSP LCDigpIsIMm2LCDKmCwg4bSTLCDhtJEsIOG0mCwg4oKaLCDhtKgsIOG0qiwgyoAsIOG1oywg4bSZ LCDKgSwg4bSaLCDhtagsIOKCmywg4bSbLCDigpwsIOG0nCwg4bWkLCDhtb4sIOG0oCwg4bWlLCDh tKEsIOKCkywg4bWqLCDKjywg4bSiLCDhtKMgXQ0KPg0KPiBbIOS6lCwg5LyNLCDigoUsIOKBtSwg 4oWkLCDihbQsIOKRpCwg4p6ELCDinbosIOKejiwg4pO5LCDikbgsIOKSjCwg77yVLCDjioQsIOOI pCwg45CFLCDjoKosIPCghKEgXQ0KDQpXb3VsZCB5b3UgYmUgYWJsZSB0byBwcm92aWRlIGEgc2Vs Zi1jb250YWluZWQgc2VyaWVzIG9mIHN0ZXBzIHN0YXJ0aW5nDQpmcm9tIGVtYWNzIC1RPw0K
bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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Sun, 09 Jun 2024 11:56:58 -0700 (PDT) From: Kai Ma <justksqsf@HIDDEN> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.500.171.1.1\)) Subject: 30.0.50; Performance issues with font selection Message-Id: <D0616033-B8BD-4260-91A9-2C89347DC0BE@HIDDEN> Date: Sun, 9 Jun 2024 20:56:47 +0200 To: "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN> X-Mailer: Apple Mail (2.3774.500.171.1.1) Received-SPF: pass client-ip=2a00:1450:4864:20::342; envelope-from=justksqsf@HIDDEN; helo=mail-wm1-x342.google.com X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, FROM_LOCAL_NOVOWEL=0.5, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -0.8 (/) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.8 (-) Recently, I have the need of editing files with extraordinary ranges of Unicode code points, and the performance problem with font selection becomes too obvious to ignore. I have currently (length (font-family-list)) =3D 582 font families installed. And whenever I input some ununsual characters, Emacs will freeze for seconds until I am able to do anything else. Worse, the freeze delay for each character will add up. And whenver the face changes (including hl-line-mode), or I switched to another buffer for some time, there will be a delay again. I'm pretty sure this is due to font selection, because Emacs won't freeze if I configure manually the fallback fonts for each 'exotic' script I encounter. For testing, there are some such characters in my file: =E3=80=A1=E3=80=A2=E3=80=A3=E3=80=A4=E3=80=A5=E3=80=A6=E3=80=A8=E3=80=A9=E3= =80=B8=E3=80=B9=E3=80=BA [=C5=AB, =C3=BA, =C5=B1, =C7=94, =C3=B9, =C8=95, =C3=BB, =C5=AD, =C8=97, = =C3=BC, =C7=96, =C7=98, =C7=9A, =C7=9C, =C5=AF, =C5=A9, =E1=B5=A4, =E1=B5=98= , =CA=89, =E1=B6=B6, =E1=BB=A7, =C5=B3, =E1=B9=B7, =E1=BB=A5, =E1=B9=B3, =E1=B9=B5, =C6=B0, =CA=8A, =E1=B6=B7, =E1=B5=BF, =E1=B6=99, = =E1=B9=BB, =E1=B9=B9, =E1=BB=A9, =E1=BB=AB, =E1=BB=AF, =E1=BB=AD, =E1=BB=B1= , =EA=AD=92, =EA=AD=9F, =EA=9D=B8, =EA=AD=8E, =EA=AD=8F, =E1=B4=9D, =E1=B5= =99, =E1=B4=9E] [=C3=BC, =C7=96, =C7=98, =C7=9A, =C7=9C, =E1=B9=BD, =E1=B5=9B, =E1=B5=A5, = =E1=B9=BF, =EA=9D=9F, =CA=8B, =E1=B6=B9, =E1=B6=8C, =E2=B1=B4, =E2=B1=B1, = =E1=BB=BD, =CA=8C, =E1=B6=BA] [=C3=9C, =C7=95, =C7=97, =C7=99, =C7=9B, =E1=B9=BC, =E1=B4=A0, =E2=B1=BD, = =E1=B9=BE, =EA=9D=9E, =C6=B2, =E1=BB=BC, =C9=85 ] [ =E2=82=80, =E2=82=81, =E2=82=82, =E2=82=83, =E2=82=84, =E2=82=85, =E2=82= =86, =E2=82=87, =E2=82=88, =E2=82=89, =E2=82=8A, =E2=82=8B, =E2=82=8C, = =E2=82=8D, =E2=82=8E, =E2=80=B8, =E1=B4=80, =E2=82=90, =E1=B4=81, =CA=99, = =E1=B4=83, =E1=B5=A6, =E1=B4=84, =E1=B4=90, =E1=B4=92, =E1=B4=85, =E1=B4=86= , =E1=B4=87, =E2=82=91, =E2=82=94, =E1=B5=A9, =C9=A2, =CA=9B, =E1=B4=A6, = =E1=B5=A7, =CA=9C, =E2=82=95, =C9=AA, =E1=B5=BB, =E1=B5=A2, =E1=B4=8A, = =E2=B1=BC, =E1=B4=8B, =E2=82=96, =CA=9F, =E2=82=97, =E1=B4=8C, =E1=B4=A7, = =E1=B4=8D, =E2=82=98, =EA=9F=BA, =C9=B4, =E1=B4=8E, =E2=82=99, =E1=B4=8F, = =E2=82=92, =C9=B6, =CA=98, =E1=B4=93, =E1=B4=91, =E1=B4=98, =E2=82=9A, = =E1=B4=A8, =E1=B4=AA, =CA=80, =E1=B5=A3, =E1=B4=99, =CA=81, =E1=B4=9A, = =E1=B5=A8, =E2=82=9B, =E1=B4=9B, =E2=82=9C, =E1=B4=9C, =E1=B5=A4, =E1=B5=BE= , =E1=B4=A0, =E1=B5=A5, =E1=B4=A1, =E2=82=93, =E1=B5=AA, =CA=8F, =E1=B4=A2= , =E1=B4=A3 ] [ =E4=BA=94, =E4=BC=8D, =E2=82=85, =E2=81=B5, =E2=85=A4, =E2=85=B4, =E2=91= =A4, =E2=9E=84, =E2=9D=BA, =E2=9E=8E, =E2=93=B9, =E2=91=B8, =E2=92=8C, = =EF=BC=95, =E3=8A=84, =E3=88=A4, =E3=90=85, =E3=A0=AA, =F0=A0=84=A1 ]
Kai Ma <justksqsf@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#71454; Package emacs.
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