040000 tree 4bcc7f1f4bc740e6974d3ea9b754c2b5f3361a36	compare
040000 tree cf766b2906e00d770fa14a77834c0df66cda92e1	copy
040000 tree df89df8015f2003b19c923c7578081e37b621059	data
040000 tree 0e3ee08094f04eb28a7cb3e5b832b496ee3ba814	find
040000 tree 23ffc68ff0d1a09daee1d77bf3fc9205b9bcd76e	rfind
040000 tree 2ef0a2995a2757499153ab9178fc9ea91c293252	substr
040000 tree c23d37203f102a369e264e71d79116a2e5bbf3ac	to_string