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Changes between Initial Version and Version 1 of Ticket #43977, comment 2

initial	v1
3	3	[attachment:"43977.2.diff"] is an update that outsources the relevant code into a new function: `wp_parse_list()` is similar to the existing `wp_parse_id_list()` and `wp_parse_slug_list()`, however without applying any additional sanitization on the list items.
4	4
5		The function contains the fix for `preg_split()` using the `PREG_SPLIT_NO_EMPTY` flag (good idea @sstoqnov!). There is one case where that flag doesn't really work though: If an empty string is passed to the function, the result will still be an array with one empty string in it, which is not what we want, so we need to work around it with an extra check.
	5	The function contains the fix for `preg_split()` using the `PREG_SPLIT_NO_EMPTY` flag (good idea @sstoqnov!).
6	6
7	7	`wp_parse_id_list()` and `wp_parse_slug_list()` now internally call `wp_parse_list()`.