[wp-trac] [WordPress Trac] #37788: dns-prefetch s.w.org conditionally via javascript

[WordPress Trac]

#37788: dns-prefetch s.w.org conditionally via javascript
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 Reporter:  superpoincare  |      Owner:
     Type:  enhancement    |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  General        |    Version:  4.6
 Severity:  normal         |   Keywords:
  Focuses:                 |
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 For many users, dns-prefetch to s.w.org is not needed if they aren't using
 Jetpack or any plugin which connects to it. It's because:

 1. A page may not have an emoji
 2. Even if the page has it, the browser may support emojis. Going forward
 the support will increase.

 Hence I propose the dns-prefetch to s.w.org be made only if the feature
 detection detects wp-emoji-release needs to be loaded or if possible page
 needs an emoji svg.

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Ticket URL: <https://core.trac.wordpress.org/ticket/37788>
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