[wp-trac] [WordPress Trac] #56057: Add conditional to WP_Upgrader::install_package() for Rollback testing

[WordPress Trac]

#56057: Add conditional to WP_Upgrader::install_package() for Rollback testing
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 Reporter:  afragen          |       Owner:  SergeyBiryukov
     Type:  feature request  |      Status:  reopened
 Priority:  normal           |   Milestone:  6.1
Component:  Upgrade/Install  |     Version:  trunk
 Severity:  normal           |  Resolution:
 Keywords:  has-patch early  |     Focuses:
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Comment (by peterwilsoncc):

 There is a substantial difference between adding an action and checking
 for a specific class name within a feature plugin that is under
 development.

 There are also circumstantial difference, the existing hook `update-
 custom_{$action}` could have been expanded for use as a robust and future
 friendly solution.

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Ticket URL: <https://core.trac.wordpress.org/ticket/56057#comment:13>
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