Make WordPress Core

Opened 9 years ago

Closed 6 years ago

#21172 closed defect (bug) (duplicate)

Adding the first filter/action in an earlier priority during a later priority causes the earlier priority to run (last)

Reported by: devesine Owned by:
Milestone: Priority: normal
Severity: normal Version: 3.4
Component: Plugins Keywords: dev-feedback needs-refresh
Focuses: Cc:


During testing of #21169, it occurred to me that http://core.trac.wordpress.org/ticket/5338#comment:1 might present a problem with each rather than next/current, but that turns out not to be the case. Instead, this exposed a different bug:

If you add a new filter at priority 9, when priority 9 did not previously have any filters, during the priority 10 execution, the priority 9 filter will run (!) after all other priorities (since the filters are not resorted after each priority).

(Generally, if you add an earlier priority that did not previously have any filters during a later priority...)

The attached unit test demonstrates this behavior.

Attachments (3)

add-at-9-unit.patch (792 bytes) - added by devesine 9 years ago.
add-at-9-after-21169.patch (2.0 KB) - added by devesine 9 years ago.
add-at-9-include-21169.patch (3.0 KB) - added by devesine 9 years ago.

Download all attachments as: .zip

Change History (8)

#1 @scribu
9 years ago

  • Cc scribu added

#2 @devesine
9 years ago

Proposed solution: keep track of the current priority, skip any priorities encountered that are already past.

add-at-9-after-21169.patch applies after the patch attached to #21169; add-at-9-include-21169.patch includes that patch (for convenience of testing).

I can also write one against the present code (using next()/current() rather than each()) if/when that becomes appropriate. Doing it without the #21169 change would slightly change the implementation of this fix (to use key($wp_filter[$tag]) instead of $next['key'], I believe).

#3 @devesine
9 years ago

  • Keywords has-patch added

#4 @chriscct7
6 years ago

  • Keywords dev-feedback needs-refresh added; has-patch removed

#5 @DrewAPicture
6 years ago

  • Milestone Awaiting Review deleted
  • Resolution set to duplicate
  • Status changed from new to closed

This seems like a duplicate for #17817 which has a roadmap for merge approval.

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