[wp-trac] [WordPress Trac] #21483: Refactor Customizer Upload, Image, and Background Image controls to leverage the media library/modal

[WordPress Trac]

#21483: Refactor Customizer Upload, Image, and Background Image controls to
leverage the media library/modal
----------------------------+-----------------------------
 Reporter:  jjonesftw       |       Owner:  (none)
     Type:  task (blessed)  |      Status:  closed
 Priority:  normal          |   Milestone:  4.1
Component:  Customize       |     Version:  3.5
 Severity:  normal          |  Resolution:  fixed
 Keywords:  has-patch       |     Focuses:  ui, javascript
----------------------------+-----------------------------

Comment (by westonruter):

 In [changeset:"61576" 61576]:
 {{{
 #!CommitTicketReference repository="" revision="61576"
 Customize: Use `wp_check_filetype()` instead of `substr()` to extract file
 extension.

 This fixes compatibility with image files that have 4-character
 extensions, such as `.webp` and `.avif`.

 Follow-up to [57524], [50810], [30309].

 Props buutqn, westonruter.
 See #51228, #35725, #21483.
 Fixes #64557.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/21483#comment:64>
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