ref: 67a16248b4538a78e1afcbc7588e16a81f9ea363
dir: /testdir/test61.ok/
456789 3456789 23456789 123456789 123456789 1111 ----- 123456 1234567 12345678 456789 3456789 23456789 123456789 123456789 123456789 123456 2222 ----- 123456abc 123456 123456789 123456 123456abc aaaa aaaa