bug#54970: 28.1; Some emoji no longer display

[Howard Melman]

> On Apr 16, 2022, at 12:42 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> 
>> From: Howard Melman <hmelman@gmail.com>
>> Date: Sat, 16 Apr 2022 12:21:20 -0400
>> Cc: Lars Ingebrigtsen <larsi@gnus.org>, 54970@debbugs.gnu.org
>> 
>>>   (set-fontset-font t 'symbol "Apple Color Emoji")
>>> 
>>> Please let us know if that makes any difference.
>> 
>> As I said in my initial report, that (or something similar) did solve it for 
>> me.
>> 
>> But the NEWS report said to do this:
>> 
>>    (set-fontset-font t 'emoji
>>                      '("My New Emoji Font" . "iso10646-1") nil 'prepend)
>> 
>> Which did not work for me, but this did:
>> 
>>    (set-fontset-font t 'symbol
>>                     '("Apple Color Emoji" . "iso10646-1") nil 'prepend)
> 
> That's because we don't want to advertise the (non-free) Apple font.

That's fine, but the first is for the script symbol 'emoji and the second
is for the script symbol 'symbol and using the first with the Apple font
didn't work.

>> I'm not clear about what the iso10646-1 part does or if it's needed.  
> 
> It makes the setting work more reliably in this case.

Not in my experience :) What I'm not clear about is why the registry
"iso10646-1" is needed if I'm specifying a script for emoji which I think
is always unicode.

Howard