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Changes between Initial Version and Version 1 of Ticket #21652, comment 3

initial	v1
3	3	I agree, the error handling can be improved here. Since we already returning WP_Error objects we easily can add one more, so the change is backward compatible.
4	4
5		We're doing similar checks on other places, like `wp_insert_term()` or `is_object_in_term()`, where we just declare the input as invalid. In [attachment:21652.2.patch] I have used a similar phrase. ~~It changes also the operator of the first check, which was missed in 21652.patch.~~
	5	We're doing similar checks on other places, like `wp_insert_term()` or `is_object_in_term()`, where we just declare the input as invalid. In [attachment:21652.2.patch] I have used a similar phrase.