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Changes between Initial Version and Version 1 of Ticket #51857, comment 19

initial	v1
1	1	During today's scrub,
2		@afragen suggest that:
	2	@afragen suggested that:
3	3
4	4	''Easiest way to test is install patch, set a breakpoint in copy_dir() after $dirlist assignment and set $dirlist = false; This will return WP_Error and trigger the rollback during a plugin/theme update.''