| input test1234 | |
| return 0 | |
| len 8 | |
| output test1234 | |
| input test[abcfoobar]2211 | |
| return 0 | |
| len 19 | |
| output test[abcfoobar]2211 | |
| input bar[aaa][bbbb]sss | |
| return 0 | |
| len 17 | |
| output bar[aaa][bbbb]sss | |
| input kmod[p.b]lib | |
| return 0 | |
| len 12 | |
| output kmod[p.b]lib | |
| input [az]1234[AZ] | |
| return 0 | |
| len 12 | |
| output [az]1234[AZ] | |