1
2[ $'hello\0' = hello ]
3[ $'hello\0world' = hello ]
4[ $'hello\0'$'world' = helloworld ]
5[ $'hello\000' = hello ]
6[ $'hello\000world' = hello ]
7[ $'hello\000'$'world' = helloworld ]
8[ $'hello\x00' = hello ]
9[ $'hello\x00world' = hello ]
10[ $'hello\x00'$'world' = helloworld ]
11