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Re: Unicode 13 Emoji ranges composed with wrong font on NS port

From: Jimmy Yuen Ho Wong
Subject: Re: Unicode 13 Emoji ranges composed with wrong font on NS port
Date: Mon, 11 Oct 2021 22:39:19 +0100
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.2.0

On 10/10/2021 4:49 PM, Robert Pluim wrote:
On Sun, 10 Oct 2021 13:52:01 +0300, Eli Zaretskii <eliz@gnu.org> said:
     >> Date: Sun, 10 Oct 2021 09:27:17 +0100
     >> From: Jimmy Yuen Ho Wong <wyuenho@gmail.com>
     >> However, despite what the NEWS file claims, I was visiting Unicode 13's 
emoji-style.txt downloaded from
     >> here and noticed that certain composed character in the modifier and 
zwj blocks do not compose using
     >> Apple Color Emoji on the NS port running on macOS 11, but somehow went 
to Symbola, even after setting
     >> (set-fontset-font t 'emoji '("Apple Color Emoji" . "iso10646-1") nil 
'prepend). Specifically, the characters are
     >> #x270c, #x261d, #x270d, and #x26f9.

As Eli mentions below, they╩╝re not emoji (in Emacs, at least)
x270c is Victory Hand, x261d is Index Pointing Up, x270d is Writing Hand, and x26f9 is Person Bouncing Ball. They are found in Unicode 14's, along with Unicode 13's emoji-data.txt. All of which have been a part of Emoji 1.0 from 2015.

     >> I also noticed that Emoji Presentation isn't handled correctly 
according to spec yet, tho much closer than
     >> most browers except Firefox.

You'll have to be more specific. Details matter when dealing with
Unicode :-)

As the comments in emoji-style.txt states, emojis with Emoji_Presentation=False when followed by VS15 (text+ts), should be displayed as text, but currently most are displayed as emojis, whereas most of those followed by VS16 (text+es) are currently displayed text. See the attached screenshot.

Attachment: Screen Shot 2021-10-11 at 10.35.56 pm.png
Description: PNG image

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