Package: firefox
Version: 68.0.2-3
Followup-For: Bug #849602
Control: retitle -1 font TwitterMozilla can be installed below /usr/share/fonts

Dear Maintainer,

EmojiOne in Firefox was replaced by Twemoji distributed by Twitter.
TwemojiMozilla.ttf in Firefox 68 is COLR/CPAL format in opentype
https://docs.microsoft.com/en-us/typography/opentype/spec/colr
which is not a bitmap font format and gives better scaling result
than the bitmap font format.

On the other hand Noto Color Emoji by Google is in CBDT format
https://docs.microsoft.com/en-us/typography/opentype/spec/cbdt
which is the bitmap.
In Debian there seems no color emoji font in COLR/CPAL format.

COLR/CPAL color font format is supported in gimp
https://gitlab.gnome.org/GNOME/gimp/issues/1663
and harftex https://github.com/khaledhosny/harftex
Support request is filed against LibreOffice
https://bugs.documentfoundation.org/show_bug.cgi?id=104403

Addition of another emoji font in COLR format to /usr/share/fonts
may be useful for Debian.

Best regards,
Ryutaroh Matsumoto

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