[wp-trac] [WordPress Trac] #40568: Add an action in WP_Error::add()

[WordPress Trac]

#40568: Add an action in WP_Error::add()
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 Reporter:  Shelob9           |       Owner:  johnbillion
     Type:  enhancement       |      Status:  reviewing
 Priority:  normal            |   Milestone:  5.6
Component:  General           |     Version:  2.1
 Severity:  normal            |  Resolution:
 Keywords:  has-patch commit  |     Focuses:
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Comment (by TimothyBlynJacobs):

 What's changed since #28319?

 I'm also worried about the cost of the `wp_error_checked` hook. Almost
 every function invocation in the REST API checks for `is_wp_error()`. This
 could easily wind up being called hundreds of times in a request. And once
 batching lands, thousands.

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Ticket URL: <https://core.trac.wordpress.org/ticket/40568#comment:10>
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