local find,sub=string.find,string.sub
return function(s,sep,regex)
	local L={}
	local p1,p2=1--start,target
	if regex then
		while p1<=#s do
			p2=find(s,sep,p1)or #s+1
			L[#L+1]=sub(s,p1,p2-1)
			p1=p2+#sep
		end
	else
		while p1<=#s do
			p2=find(s,sep,p1,true)or #s+1
			L[#L+1]=sub(s,p1,p2-1)
			p1=p2+#sep
		end
	end
	return L
end