bug#54562: 28.0.91; Emoji sequence not composed

[Robert Pluim]

>>>>> On Fri, 25 Mar 2022 14:14:27 +0100, Andreas Schwab 
>>>>> <schwab@linux-m68k.org> said:

    Andreas> On Mär 25 2022, Eli Zaretskii wrote:
    >> By which composition rule?  Isn't that because U+20E3 is a combining
    >> character?

    Andreas> Sure.  If Emacs were able to do that even if the default does not
    Andreas> contain U+20E3 that would be ideal.  Or if Emacs were able to 
combine a
    Andreas> and U+0308 even if the latter is not avaliable in the default font.

For U+20E3 you could try playing with the value of
`auto-composition-emoji-eligible-codepoints'. For U+308, how common is
it to have a font that doesnʼt have a glyph for it?

Robert
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