s isa Bytes StringAB 537472696E674142 s2 isa FlatString String𐏓 s3 isa Bytes StringA� 537472696E6741FD s4 isa Regex /String/ true true false s5 isa FlatString String� s6 isa FlatString \nStr\x00 s7 isa FlatString \nString66515\x41 s8 isa FlatString String66515A s9 isa Regex / 0x47String/ true false true s10 isa Regex /String/ false false false s11 isa Regex /String/ false true true