Support searching with overlapping matches
For example, a text file (11 A): AAAAAAAAAAA, when I search AAAAAAAAAA (10 A),the result only 1 count, the correct answer should be 2
For example, a text file (11 A): AAAAAAAAAAA, when I search AAAAAAAAAA (10 A),the result only 1 count, the correct answer should be 2