[wp-trac] [WordPress Trac] #35357: Introduce did_filter()

[WordPress Trac]

#35357: Introduce did_filter()
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 Reporter:  mordauk      |       Owner:  chriscct7
     Type:  enhancement  |      Status:  accepted
 Priority:  normal       |   Milestone:  4.5
Component:  Plugins      |     Version:
 Severity:  normal       |  Resolution:
 Keywords:  needs-patch  |     Focuses:
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Comment (by mordauk):

 The instance that made me open this was when I wanted to detect if a
 particular filter had run and then prevent it from ever running again.
 Definitely a rare scenario but it was one that made sense in my particular
 case.

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Ticket URL: <https://core.trac.wordpress.org/ticket/35357#comment:8>
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