From: Robert Pluim <rpluim@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 44020@debbugs.gnu.org, Lars Ingebrigtsen <larsi@gnus.org>
Subject: bug#44020: 28.0.50; Prefer selection of colour emoji fonts?
Date: Fri, 16 Oct 2020 10:19:12 +0200 [thread overview]
Message-ID: <m2o8l2inwf.fsf@gmail.com> (raw)
In-Reply-To: <83tuuvwcd8.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 15 Oct 2020 21:52:19 +0300")
>>>>> On Thu, 15 Oct 2020 21:52:19 +0300, Eli Zaretskii <eliz@gnu.org> said:
>> From: Lars Ingebrigtsen <larsi@gnus.org>
>> Date: Thu, 15 Oct 2020 20:10:44 +0200
>>
>>
>> If I start "emacs -Q" and load a file with this character:
>>
>> 🎉
>>
>> Emacs shows that as a black-and-white symbol using the Symbola font.
>>
>> If I then say
>>
>> (set-fontset-font t 'symbol "Noto Color Emoji")
>> (set-fontset-font t 'symbol "Symbola" nil 'append)
>>
>> I get a colourful party popper.
>>
>> It'd be nice if this worked out of the box.
Eli> AFAIR, Robert Pluim worked on better support for Emoji display; that
Eli> needs a few more tweaks and importing one more file from the UCD, to
Eli> support Emoji sequences. I hope this will be ready some time soon.
Eli> Robert?
Thereʼs three parts to that:
1. Deciding what fonts we should use for emoji. We can get a lot of
good results by adding appropriate 'set-fontset-font' calls to
emacs, independently of any other work (I also wonder if we should
change the default of use-default-font-for-symbols, given the
proliferation of both emoji and fonts dedicated to displaying them)
2. Extract the emoji sequences from the Unicode data files and assign
them to a new 'emoji' script. Be prepared to choose your favourite
bikeshed colour.
3. Add the appropriate entries to composition-function-table so that
the various multi-codepoint emoji sequences have a chance to be
rendered correctly, whether by HarfBuzz or the Apple thing whose
name I forget.
For [1], I think "Noto Color Emoji" and "Apple Color Emoji" would be a
good start.
For [2], I think that was finished, except that Eli then updated Emacs
to the next version of Unicode, and I haven't adjusted yet.
[3] is done for the cases that composition can currently handle. I
recall that there are sequences that require composition to do
lookback, which I think YAMAMOTO-san has patches for, but they've not
been submitted to Emacs (a quick perusal of my notes says this is for
keycap emojis, so I guess thatʼs a minor nit).
Oh, and there was a complication with enabling this by default on
macOS that I donʼt fully understand yet. Iʼll reread the history.
Iʼll see if I can clean this up this weekend and throw it on a branch.
Robert
--
next prev parent reply other threads:[~2020-10-16 8:19 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-15 18:10 bug#44020: 28.0.50; Prefer selection of colour emoji fonts? Lars Ingebrigtsen
2020-10-15 18:52 ` Eli Zaretskii
2020-10-16 8:19 ` Robert Pluim [this message]
2020-10-16 10:26 ` Eli Zaretskii
2020-10-16 10:38 ` Robert Pluim
2020-10-16 10:49 ` Eli Zaretskii
2020-10-16 19:30 ` Alan Third
2020-10-17 6:38 ` Lars Ingebrigtsen
2020-10-17 9:12 ` Eli Zaretskii
2020-10-18 8:09 ` Lars Ingebrigtsen
2020-10-18 15:02 ` Eli Zaretskii
2020-10-19 8:35 ` Lars Ingebrigtsen
2020-10-17 15:27 ` Alan Third
2020-10-17 15:51 ` Alan Third
2020-10-17 6:44 ` Eli Zaretskii
2020-10-19 19:11 ` Robert Pluim
2020-10-16 14:49 ` Lars Ingebrigtsen
2020-10-19 10:56 ` Robert Pluim
2020-10-19 14:55 ` Eli Zaretskii
2020-10-19 18:34 ` Robert Pluim
2020-10-19 18:52 ` Eli Zaretskii
2020-10-19 19:00 ` Robert Pluim
2020-10-19 19:03 ` Stephen Berman
2020-10-19 19:46 ` Eli Zaretskii
2020-10-19 22:00 ` Stephen Berman
2020-10-20 2:35 ` Eli Zaretskii
2020-10-20 7:33 ` Robert Pluim
2020-10-20 8:58 ` Robert Pluim
2020-10-20 14:28 ` Eli Zaretskii
2020-10-20 14:41 ` Robert Pluim
2020-10-19 19:03 ` Stefan Kangas
2020-10-19 19:32 ` Robert Pluim
2020-10-19 19:47 ` Eli Zaretskii
2021-11-06 19:00 ` Lars Ingebrigtsen
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