From: Robert Pluim <rpluim@gmail.com>
To: Will Bush <will.g.bush@gmail.com>
Cc: "Basil L. Contovounesios" <contovob@tcd.ie>, 40733@debbugs.gnu.org
Subject: bug#40733: 28.0.50; Emacs locks up on paste (yank) of unicode characters
Date: Tue, 21 Apr 2020 15:19:08 +0200 [thread overview]
Message-ID: <m2d081vuwj.fsf@gmail.com> (raw)
In-Reply-To: <CA+aYz4TicXRvtBchSaNoppPofChEcsBn58m-jEWZwJ1B3uojGg@mail.gmail.com> (Will Bush's message of "Tue, 21 Apr 2020 07:19:56 -0500")
>>>>> On Tue, 21 Apr 2020 07:19:56 -0500, Will Bush <will.g.bush@gmail.com> said:
Will> I verified it several times. When I remove google-fonts, Firefox renders the
Will> character fine and Emacs yanks it without issue. When I add google-fonts
Will> back
Will> Firefox doesn't render the character and Emacs yanking it lags like crazy.
Thatʼs interesting to know. Which font specifically does emacs end up
using for that character? Emacs ends up using 'Noto Sans CJK KR' for
me here. BTW, if you want to ignore that font, you can set
'face-ignored-fonts' to match it, and you won't have to uninstall it.
Will> The google-fonts Nix expression is here:
Will> https://github.com/NixOS/nixpkgs/blob/master/pkgs/data/fonts/google-fonts/default.nix
Will> I tried Emacs 26.3 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.17) (A
Will> version that just happens to be in nixpkgs) again to see what it would do
Will> when
Will> yanking that character with and without google-fonts installed.
Will> With google-fonts installed it doesn't have latency issues, but it inserts
Will> an
Will> empty whitespace looking character (wider than a normal space). Without
Will> google-fonts installed, it renders the character fine with no latency.
Will> So I suspect even if there is an issue with google-fonts, there's still a
Will> regression in Emacs since 26.3. I'll try newer versions of Emacs later to
Will> try to
Will> narrow the version gap between 26.3 and 28.0.50.
I donʼt think thereʼs much point in that: emacs-26 uses Xft for font
handling, emacs-27 uses Cairo+Harfbuzz[1]; theyʼre fundamentally doing
very different things, so I donʼt think this is caused by a single
identifiable change.
Robert
Footnotes:
[1] Although you can still build it with Xft if you want, but I
wouldnʼt recommend that, since it will crash once you start
processing Emojis and other 'interesting' Unicode characters.
next prev parent reply other threads:[~2020-04-21 13:19 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-20 11:05 bug#40733: 28.0.50; Emacs locks up on paste (yank) of unicode characters Will Bush
2020-04-20 15:52 ` Robert Pluim
2020-04-20 16:13 ` Eli Zaretskii
2020-04-20 21:27 ` Will Bush
2020-04-20 20:20 ` Alan Third
2020-04-20 22:48 ` Basil L. Contovounesios
2020-04-21 10:01 ` Robert Pluim
2020-04-21 12:19 ` Will Bush
2020-04-21 13:19 ` Robert Pluim [this message]
2020-04-21 19:35 ` James Cloos
2020-04-22 7:35 ` Robert Pluim
2020-04-25 10:34 ` Will Bush
[not found] ` <CA+aYz4RNB1-g5uUz-M-XuJEhZPGpA4X6n8NSiTCUdOMkpReFng@mail.gmail.com>
2020-04-25 13:34 ` bug#40733: Fwd: " Will Bush
2020-04-25 13:50 ` Eli Zaretskii
2020-04-29 11:59 ` Will Bush
2020-04-29 12:16 ` Eli Zaretskii
2020-04-29 12:42 ` Will Bush
2020-04-29 12:50 ` Robert Pluim
2020-04-29 14:30 ` Eli Zaretskii
2020-06-01 11:19 ` Will Bush
2020-06-01 11:44 ` Pip Cet
2020-06-01 15:15 ` Eli Zaretskii
2020-06-01 15:50 ` Pip Cet
2022-04-24 14:20 ` Lars Ingebrigtsen
2022-05-18 3:39 ` Will Bush
2022-05-18 11:18 ` Eli Zaretskii
2022-06-15 12:40 ` Lars Ingebrigtsen
2022-06-19 21:05 ` Will Bush
2022-06-19 22:25 ` Lars Ingebrigtsen
2020-04-21 14:29 ` Eli Zaretskii
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