[38179] added support for the rainbow flag to core, but platform compatibility is a bit strange, because the flag was defined out of sync with the usual Unicode release cycle. For example Android N supports all Unicode 9.0 emoji, but doesn't support the rainbow flag thus the rainbow flag isn't rendered.
The Twemoji loader already has an exception for flags - it'll load if the browser supports everything but flags, and then only replace flag emoji, leaving everything else as native rendering. To provide a seamless experience for all flags the loader now uses the rainbow flag to test flag support.
Merge of [38194] to the 4.6 branch.
Props pento.
See #37543.
See #37566.
Built from https://develop.svn.wordpress.org/branches/4.6@38195
git-svn-id: http://core.svn.wordpress.org/branches/4.6@38136 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This includes a new test in the emoji loader, to see if the browser supports rendering Unicode 9.0 emoji, as well as an update to `twemoji.js`, to load Unicode 9.0 twemoji images.
The default CDN location for loading Twemoji images has changed, moving to a versioned subdirectory. This allows updates without needing to purge the CDN.
Fixes#37361.
Built from https://develop.svn.wordpress.org/trunk@38087
git-svn-id: http://core.svn.wordpress.org/trunk@38028 1a063a9b-81f0-0310-95a4-ce76da25c4cd
[37028] missed some logic to capture the base emoji skin tone, to compare to the modified emoji skin tone. This caused all browsers to report that they supported skin tone modifiers, regardless of whether they actually did.
Fixes#36604 for trunk.
Built from https://develop.svn.wordpress.org/trunk@37256
git-svn-id: http://core.svn.wordpress.org/trunk@37222 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When the browser test for diversity emoji was added in [36160], it included a workaround for Chrome not being able to compare `Uint8ClampedArray` objects directly, by converting them to a string. Unfortunately, Safari doesn't support the `Uint8ClampedArray.toString()` method correctly, so the test was incorrectly failing in Safari.
Fixes#36266 for trunk.
Built from https://develop.svn.wordpress.org/trunk@37028
git-svn-id: http://core.svn.wordpress.org/trunk@36995 1a063a9b-81f0-0310-95a4-ce76da25c4cd
As new sets of emoji are added to Unicode, and browsers add support for them at random intervals, we'll inevitably need to add new tests to the emoji loader. This change makes it much easier to add new tests as they're needed.
Fixes#35300.
Built from https://develop.svn.wordpress.org/trunk@36816
git-svn-id: http://core.svn.wordpress.org/trunk@36783 1a063a9b-81f0-0310-95a4-ce76da25c4cd
