[Webkit-unassigned] [Bug 199991] [FreeType] Shrugging woman emoji ��‍♀️ not joined sometimes depending on mysterious unknown conditions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=199991

--- Comment #17 from Adrian Perez <aperez at igalia.com> ---
(In reply to Adrian Perez from comment #16)
> This page is great for testing:
> 
>   https://www.unicode.org/emoji/charts/emoji-zwj-sequences.html
> 
> Currently there are only a few ones that are having issues here for me:
> 
>   - Hair color / baldness modifiers.
>   - Some profession modifiers (but not all).
>   - Woman/man with veil.
>   - Woman/man feeding baby.
>   - Santa Claus.
>   - Person with cane (but man/woman with cane works!).
>   - Person in manual/motorized wheelchair (but man/woman in wheelchairs
> work!).
>   - Black cat.
>   - Polar bear.
> 
> The rest all work perfectly.
> 
> Currently I have installed the Twemoji font, version 12.1.4, and I think
> the cases above would be fixed with the update to 12.1.5, which includes
> this in release notes:
> 
>   “Update parsing and assets for new gender-neutral emojis introduced in
> Emoji 12.1”

I have manually built and installed a Twemoji 12.1.5 package here, and
there are a few more from the list above that render correctly (person
in motorized/manual wheelchair , person with cane, professions, and the
hair color/baldness modifiers); the rest still render as separate glyphs.

So I think that the conclusion here is that as new Unicode versions which
add more emoji variants using ZWJ sequences, now and then there will be
a few of them “broken” until either ICU is updated, the font is updated,
or both are updated (depending on cases); but the problem is outside of
WebKit's scope. WDYT?

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