id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
11382	[Patch] Improve MapCSS speed by using BitSets	michael2402	michael2402	"MapCSS is slowed down a lot because it needs to sort the list of possible rules for every element. We can improve this by sorting that list once (using a big list) and then using a BitSet to mask rules that could be applied to the current element.

Masking accuracy is improved by not only looking for key/value pairs, but also for required keys."	enhancement	closed	normal		Core mappaint		fixed	mapcss performance	Klumbumbus