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bug#39799: 28.0.50; Most emoji sequences don’t render correctly

From: Robert Pluim
Subject: bug#39799: 28.0.50; Most emoji sequences don’t render correctly
Date: Fri, 28 Feb 2020 16:39:04 +0100

>>>>> On Fri, 28 Feb 2020 16:45:04 +0200, Eli Zaretskii <address@hidden> said:

    >> From: Robert Pluim <address@hidden>
    >> Cc: Glenn Morris <address@hidden>,  address@hidden,  address@hidden
    >> Date: Fri, 28 Feb 2020 15:14:01 +0100
    >> >> It DTRT for me under Cairo if I change my fontset settings to use
    >> >> 'Noto Color Emoji' instead of Symbola for:
    Eli> Is that a free font (it's from Google, AFAIK, so it might not be)?  If
    Eli> it is free, we could modify fontset.el to use this font if available.
    Eli> (Or maybe there are better free Emoji fonts out there?)
    >> Its license is Apache 2.0. It seems fairly popular. I have no opinion
    >> either way.

    Eli> What about the fact that we still support XFT?

I try to forget that :-)

    Eli> And anyway, the name "Noto Color Emoji" seems to imply it's a font
    Eli> created to display Emoji, not symbols in general, let alone non-symbol
    Eli> blocks we currently set up to use Symbola if that is available.

Right. Thereʼs a Noto Emoji font as well.

    >> As Mike clarified, you need to change the fontsets in order to get
    >> them to display in colour (uncomposed, of course).

    Eli> I don't see how that is relevant.  Fontsets are just means to cause
    Eli> Emacs use a certain font for a certain range of characters.  Fontsets
    Eli> do not affect color Emoji support.

They donʼt, no, but in this case changing the fontset was enough to
get the right glyphs to display.


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