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

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: steven@stebalien.com,  63731@debbugs.gnu.org
> Date: Fri, 26 May 2023 17:25:24 +0200
> 
>     Eli> Or are you saying that without including VS-15, CHAR+FE0E is not
>     Eli> displayed using its text representation?
> 
> Not quite. If I donʼt have compose-gstring-for-graphic for VS-15, no
> composition occurs for CHAR+FE0E. With my change youʼll get
> composition, but itʼs still not 100% correct: CHAR+FE0E when CHAR is a
> member of the emoji script will use emoji presentation, not text, but
> the extra empty box will not show, so itʼs still an improvement.

OK.  And what about CHAR+FE0E when CHAR is not an Emoji?

Anyway, I think you should install the patch on emacs-29, and we
should then try to fix the text-representation bug with VS-15 on
master.  (I guess it requires a change to font.c or something?)

>     Eli> Did you test the proposed change with the admin/emoji-*.txt files, to
>     Eli> make sure they all still display OK?
> 
> Yes. Iʼve also got a change that makes Emoji_Keycap_Sequence work, but
> I think we can leave that for master.

Depends on the solution, I guess.  Isn't it just a change to the
VS-16's entry in composition-function-table?  Or maybe a change in the
#x20e3's entry?  (Did we discus the Emoji_Keycap_Sequence case before?)