[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:  closed
 Priority:  normal                  |   Milestone:  5.6
Component:  General                 |     Version:  2.1
 Severity:  normal                  |  Resolution:  fixed
 Keywords:  has-patch dev-feedback  |     Focuses:
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Comment (by johnjamesjacoby):

 I'm just seeing this for the first time, and I find it odd that the
 `wp_error_checked` action only fires when `$thing` is an error. This means
 there is no way to know via this action if something was error-checked and
 it was not an error.

 If I call `is_wp_error( $thing )` and it's not an instance of `WP_Error`,
 how will I ever know it was checked?

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Ticket URL: <https://core.trac.wordpress.org/ticket/40568#comment:21>
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