[wp-trac] [WordPress Trac] #59551: Respect non-null values from the `pre_render_block` filter

[WordPress Trac]

#59551: Respect non-null values from the `pre_render_block` filter
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 Reporter:  danieliser    |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  General       |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by dmsnell):

 @danieliser for more context here, and thank you @pbiron for sharing
 above, this filter performs a kind of inverted goal to most filters. it's
 only wanting to know if the rendering process should be circumvented, and
 so there's an ambiguity if it returns content. with `null` it's clear that
 some filter took care of it and so the process can abort.

 the original block is passed as a second argument to the filter, so it's
 still possible to inspect what was there before, but if some plugin
 removes a block from the rendering stage, there's nothing left to filter
 after that point.

 are you trying to avoid some enqueued styles?

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Ticket URL: <https://core.trac.wordpress.org/ticket/59551#comment:3>
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