ref: 1ed7430691158c6a2a0c5a7bae36e9e49a43a0e2 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