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

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: 63731@debbugs.gnu.org,  steven@stebalien.com
> Date: Sun, 28 May 2023 13:43:13 +0200
> 
> >>>>> On Fri, 26 May 2023 21:05:47 +0300, Eli Zaretskii <eliz@gnu.org> said:
> 
>     >> From: Robert Pluim <rpluim@gmail.com>
>     >> Cc: 63731@debbugs.gnu.org,  steven@stebalien.com
>     >> Date: Fri, 26 May 2023 19:35:56 +0200
>     >> 
>     >> in this case it *is* an emoji codepoint, so it displays
>     >> as emoji because of font.c, even when followed by VS-15.
> 
>     Eli> If we pass to an Emoji-capable font a sequence of a character 
> followed
>     Eli> by VS-15, I'd expect the font to produce a glyph with the textual
>     Eli> representation of that character.
> 
> But we donʼt do that: we ask the font "give me a glyph for this codepoint".

Is that because of the composition-function-table's entry for VS-15?
Maybe we should augment that, then?