[wp-trac] [WordPress Trac] #21299: upload_mimes filter doesn't work occasionally

[WordPress Trac]

#21299: upload_mimes filter doesn't work occasionally
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 Reporter:  dpacmittal    |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  3.4.1
 Severity:  normal        |   Keywords:
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 get_allowed_mime_types() in wp-includes/functions.php contains static
 variable $mimes. So if get_allowed_mime_types() is called before a filter
 is added, apply_filters() for 'upload_mimes' is not called, rendering the
 filter useless.

 It happened on one of my websites where get_allowed_mime_types() was being
 called even before 'upload_mimes' filters were added from the theme's
 functions.php.

 Best fix is to remove the static variable. Thoughts?

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Ticket URL: <http://core.trac.wordpress.org/ticket/21299>
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