bug#63731: [PATCH] Support Emoji Variation Sequence 16 (FE0F) where appropriate

[Robert Pluim]

>>>>> On Mon, 05 Jun 2023 18:35:37 +0300, Eli Zaretskii <eliz@gnu.org> said:

    >> From: Robert Pluim <rpluim@gmail.com>
    >> Cc: 63731@debbugs.gnu.org,  steven@stebalien.com
    >> Date: Mon, 05 Jun 2023 16:27:28 +0200
    >> 
    Eli> Hmm... I though just changing the fontset in fontset.el would be
    Eli> enough.
    >> 
    >> Itʼs almost enough to do that, and to check if the triggering
    >> character is U+FE0E, bu then we fall foul of the composition rule
    >> forward/backward issue again.

    Eli> Which forward rules would conflict with a backward rule triggered by
    Eli> U+FE0E?

All the ones for the non-emoji codepoints that still need to be
composed as emoji sometimes, eg U+261D:

"\N{U+261D}"
"\N{U+261D}\N{U+1F3FB}"
"\N{U+261D}\N{U+1F3FC}"
"\N{U+261D}\N{U+1F3FD}"
"\N{U+261D}\N{U+1F3FE}"
"\N{U+261D}\N{U+1F3FF}"

to which we add:

"\N{U+261D}\N{U+FE0E}"
"\N{U+261D}\N{U+FE0F}"

(and not adding those doesnʼt help).

Robert
--