1afterpound1 input.sh /^foo="#"; afterpound1() {}$/;" f 2afterpound2 input.sh /^foo="#\\""; afterpound2() {}$/;" f 3afterpound3 input.sh /^foo='#'; afterpound3() {}$/;" f 4afterpound4 input.sh /^foo='#'''; afterpound4() {}$/;" f 5