[wp-trac] [WordPress Trac] #46124: Allow setting custom image alt text in custom header image

[WordPress Trac]

#46124: Allow setting custom image alt text in custom header image
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 Reporter:  webmandesign             |       Owner:  audrasjb
     Type:  defect (bug)             |      Status:  accepted
 Priority:  normal                   |   Milestone:  5.9
Component:  Media                    |     Version:  5.0.3
 Severity:  normal                   |  Resolution:
 Keywords:  needs-testing has-patch  |     Focuses:  accessibility
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Comment (by joedolson):

 I think there's a reasonable argument for ensuring the value is a string;
 it just needs to be updated to ensure that's actually happening.
 `is_string()` would probably do the job respectably.

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Ticket URL: <https://core.trac.wordpress.org/ticket/46124#comment:53>
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