Scott Taylor 42bcec5061 Introduce a function, wp_attachment_is( $type, $post = 0 ), to collapse the logic for determining whether an attachment is an image, audio, or video.
This is admittedly a first pass. There needs to be a generic handler for when any other type is passed, but for now it accepts the whitelist.

See #25275.


git-svn-id: https://develop.svn.wordpress.org/trunk@31645 602fd350-edb4-49c9-b593-d223f7449a82
2015-03-06 20:25:09 +00:00
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