[wp-trac] [WordPress Trac] #38557: Format for registering a default header image is ambiguous

[WordPress Trac]

#38557: Format for registering a default header image is ambiguous
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 Reporter:  bradyvercher           |       Owner:  pento
     Type:  defect (bug)           |      Status:  reopened
 Priority:  normal                 |   Milestone:  Awaiting Review
Component:  Themes                 |     Version:
 Severity:  normal                 |  Resolution:
 Keywords:  has-patch 2nd-opinion  |     Focuses:
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Comment (by joemcgill):

 [attachment:38557.4.diff] fixes the two places in core where we weren't
 accounting for `get_theme_support()` returning a string with sprintf
 placeholders.

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Ticket URL: <https://core.trac.wordpress.org/ticket/38557#comment:12>
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