Re: emojis and other multi-character glyphs

[LdBeth <andpuke@foxmail.com>]

>>>>> In <83wnjro9xv.fsf@gnu.org> 
>>>>>	Eli Zaretskii <eliz@gnu.org> wrote:
> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Evgeny Zajcev <lg.zevlg@gmail.com>,  emacs-devel@gnu.org
> Date: Sun, 26 Dec 2021 12:53:08 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> Swift counts them: "👨‍👩‍👧‍👦".length
> >>  == 1
> 
> [...]
> 
> > But the above sequence displays here as 4 glyphs, not as one.
> 
> It displays as one glyph here.

EZ> ??? Don't you see 4 faces there?

At first I thought you are joking, but I guess not everyone's deviced
are configued differently for display Unicode or Emoji. :P

On a Mac (or computers with Apple Color Emoji installed), the above
Emoji is indeed displayed as one glyph.

The following is describe-char:

             position: 464 of 641 (72%), column: 25
            character: 👨 (displayed as 👨) (codepoint 128104, #o372150, #x1f468)
              charset: unicode (Unicode (ISO10646))
code point in charset: 0x1F468
               script: symbol
               syntax: w 	which means: word
             category: .:Base
             to input: type "C-x 8 RET 1f468" or "C-x 8 RET MAN"
          buffer code: #xF0 #x9F #x91 #xA8
            file code: #xF0 #x9F #x91 #xA8 (encoded by coding system utf-8)
              display: composed to form "👨‍👩‍👧‍👦" (see below)

Composed with the following character(s) "‍👩‍👧‍👦" using this font:
  mac-ct:-*-Apple Color Emoji-normal-normal-normal-*-13-*-*-*-m-0-iso10646-1
by these glyphs:
  [0 6 0 1438 17 -1 18 13 4 nil]

Character code properties: customize what to show
  name: MAN
  general-category: So (Symbol, Other)
  decomposition: (128104) ('👨')

There are text properties here:
  face                 wl-highlight-message-cited-text-4
  mime-view-entity     [Show]
  mime-view-entity-body [Show]
  mime-view-situation  [Show]