id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
20017	Reduce memory usage in kses.php	duck_	duck_	"Our allowed attributes rules in kses.php create a large number of empty arrays. These can all be replaced with `true` instead. This reduces memory usage by 62 kilobytes - not huge, but it all adds up.

This change is possible because the arrays are only used for attribute value checks, see wp_kses_attr(). Anything other than array just indicates that the attribute is allowed, see kses README and docs/attribute-value-checks for examples.

The block that filters style attributes with safecss_filter_attr() has to be moved out of the is_array() check to accommodate for this."	defect (bug)	closed	normal	3.4	Performance		normal	fixed	has-patch needs-testing