[wp-trac] [WordPress Trac] #54736: get_sample_permalink unsets $post->filter even though this is a public property.

[WordPress Trac]

#54736: get_sample_permalink unsets $post->filter even though this is a public
property.
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 Reporter:  herregroen    |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 The property should be set to `null` rather than being `unset`.

 Unsetting it removes it entirely which means if it's later requested (
 such as in `WP_Post::__get` ) this causes a notice to be thrown that the
 property doesn't exist.

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Ticket URL: <https://core.trac.wordpress.org/ticket/54736>
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