Re: Better emoji support

[Robert Pluim]

>>>>> On Sun, 19 Sep 2021 20:20:10 +0200, Robert Pluim <rpluim@gmail.com> said:

>>>>> On Sun, 19 Sep 2021 19:16:45 +0200, Kévin Le Gouguec 
>>>>> <kevin.legouguec@gmail.com> said:
    Kévin> Juri Linkov <juri@linkov.net> writes:
    >>> Thanks, this is a nice change.  I have a problem only with one 
character.
    >>> Displaying NORTH EAST ARROW ↗ with emoji font is inappropriate to me.
    >>> 
    >>> If adding this character to the emoji script was not a mistake,
    >>> is it possible to customize this to display such characters
    >>> as a symbol like before?

    Kévin> admin/unidata/emoji-data.txt contains a whole section where "omitted
    Kévin> code points have Emoji_Presentation=No", and AFAICT NORTH EAST ARROW
    Kévin> is one of those omitted code points.

    Robert> True. But it has the 'Emoji' property.

    Kévin> IIUC, the Unicode standard means for those omitted characters to 
display
    Kévin> as "text" rather than as "emoji", unless they are followed by a
    Kévin> variation selector[1]; maybe some adjustments in fontset.el are in
    Kévin> order?

Eli also pointed out that this should depend on the presence of the
variation selector. Iʼll add that to the work Iʼm doing on emoji ZWNJ
sequences anyway (although given that the selector and the codepoints
will likely be using different fonts, Iʼm not sure we'll be able to
achieve this)

    Robert> As "text presentation" rather than "emoji presentation", not as
    Robert> "text". If we want to follow the Emoji_Presentation property, thatʼs
    Robert> easy enough to arrange.

As per the attached. If itʼs all OK Iʼll push tomorrow.

Robert
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0001-Base-emoji-script-membership-on-Emoji_Presentation.patch
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