ref: 6ed1ebe0ee2e45b4b9079bf4ed0df24311ae4e8d dir: /test/data/stdsort-expected/
0 1 2 3 4 5 6 7 8 9 --- 1 2 3 4 5 6 7 8 9 10 --- C Cc a aa b cC d f fuckit go