[wp-trac] [WordPress Trac] #35293: Emoji Regex in wp_encode_emoji() is wildly inaccurate

[WordPress Trac]

#35293: Emoji Regex in wp_encode_emoji() is wildly inaccurate
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 Reporter:  pento                    |       Owner:  pento
     Type:  defect (bug)             |      Status:  reopened
 Priority:  normal                   |   Milestone:  4.9
Component:  Emoji                    |     Version:  4.2
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:  performance
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Comment (by peterwilsoncc):

 When testing for 4.8.1, @westonruter discovered a bug, from
 [https://wordpress.slack.com/archives/C02RQBWTW/p1505851675000210 #core]

 > I create a post with:
 > This is an emoji: 🤗✨🤷‍♂️❤️✅
 > But then when the post refreshes after saving it comes back with:
 > This is an emoji: ✨‍♂️❤️✅

 I was able to recreate the above forcing `wpdb:has_cap( 'utf8mb' )` to
 return `false`, ie forcing the database to use utf8.

 After applying this patch, the returned value was as in the screen shot in
 [attachment:35293.png].

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Ticket URL: <https://core.trac.wordpress.org/ticket/35293#comment:44>
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