[wp-trac] [WordPress Trac] #17817: do_action/apply_filters/etc. recursion on same filter kills underlying call

[WordPress Trac]

#17817: do_action/apply_filters/etc. recursion on same filter kills underlying call
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 Reporter:  kernfel                              |       Owner:
     Type:  defect (bug)                         |      Status:  reopened
 Priority:  normal                               |   Milestone:  Future
Component:  Plugins                              |  Release
 Severity:  normal                               |     Version:  2.2
 Keywords:  dev-feedback has-unit-tests has-     |  Resolution:
  patch                                          |     Focuses:
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Comment (by jbrinley):

 Replying to [comment:75 leewillis77]:
 > Does anyone know from experience whether is_callable() is suitably
 performant - or do we need to test if we want to add it?

 I did some rough testing of it at one point. I can't recall the exact
 numbers, but it slowed down the loop considerably.

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Ticket URL: <https://core.trac.wordpress.org/ticket/17817#comment:76>
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