[wp-trac] [WordPress Trac] #12009: Add support for HTML 5 "async" and "defer" attributes

[WordPress Trac]

#12009: Add support for HTML 5 "async" and "defer" attributes
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 Reporter:  Otto42         |       Owner:  azaozz
     Type:  enhancement    |      Status:  reopened
 Priority:  normal         |   Milestone:  Future Release
Component:  Script Loader  |     Version:  4.6
 Severity:  normal         |  Resolution:
 Keywords:                 |     Focuses:
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Comment (by westonruter):

 Also, in regards to concatenation and `load-scripts.php`... I don't
 believe there is any reason why an `async`/`defer` script would have to be
 pulled out from being concatenated. Browsers should still execute such
 scripts just fine if they are loaded synchronously, as these attributes
 were introduced and could be used even before all browsers supported them.
 So we could keep serving the scripts inside of `load-scripts.php`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/12009#comment:55>
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