# Sort the matches with `comparator` (or a list of comparators)
	#
	# Return a new IndexMatches instance with the sorted results.
	#
	# When more than one comparator is given, the comparators are applied in a
	# pipeline where the `n`th comparator is applied only if the `n-1`th comparator
	# returned 0.
	fun sort(comparator: ScoreComparator...): IndexMatches do
		var res = to_a
		if comparator.length == 1 then
			comparator.first.sort res
		else
			var comparators = new MatchComparators(comparator)
			comparators.sort res
		end
		return new IndexMatches.from_matches(res)
	end