[wp-trac] [WordPress Trac] #42549: Widgets: Allow gallery widget to display images from currently-queried singular post if no images selected

[WordPress Trac]

#42549: Widgets: Allow gallery widget to display images from currently-queried
singular post if no images selected
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 Reporter:  westonruter  |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  4.9.1
Component:  Widgets      |    Version:  4.9
 Severity:  normal       |   Keywords:
  Focuses:               |
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 In #42548 (pending) a `[gallery]` placed inside of a Text widget will
 result in the attachments for a given post to be used in the gallery when
 the widget appears on a singular template. The same behavior could be
 allowed for the Gallery widget as well. If you add a gallery widget to a
 sidebar but don't add any images to it, the widget could conditionally
 show if it is being rendered on a singular template for a post that has
 image attachments.

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Ticket URL: <https://core.trac.wordpress.org/ticket/42549>
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