[wp-trac] [WordPress Trac] #39007: Impossible to access current priority with WP_Hook

[WordPress Trac]

#39007: Impossible to access current priority with WP_Hook
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 Reporter:  Rarst            |      Owner:
     Type:  feature request  |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  General          |    Version:  trunk
 Severity:  normal           |   Keywords:
  Focuses:                   |
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 While there was never a public API for it, the specifics of implementation
 had previously allowed to access current priority within a hook via `key(
 $wp_filter[ current_filter() ] )`.

 This seems to no longer be a case with 4.7 implementation based on
 `WP_Hook` which both changes what this expression returns (string
 `callbacks`) and seems to hide priority data in private property.

 Given that implementation both breaks existing way to do it and doesn't
 open a new way to it breaks all code that needs access to current priority
 state without alternative.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39007>
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