# Index `mentity` by it's `MEntity::name`
	#
	# See `name_prefixes`.
	private fun index_by_name(mentity: MEntity) do
		var name = mentity.name

		# Index name
		if not names.has_key(name) then
			names[name] = new Array[MEntity]
		end
		names[name].add mentity

		# Index prefix
		if not name_prefixes.has_key(name) then
			name_prefixes[name] = new Array[MEntity]
		end
		name_prefixes[name].add mentity

		# Index distance
		name_distances.add(name)
	end