Array index out of bounds
fish: show "$foo[2]"
                 ^
Array index out of bounds
fish: show $foo[2]
                ^
Array index out of bounds
fish: show "$foo[1 2]"
                   ^
Array index out of bounds
fish: show $foo[1 2]
                  ^
Array index out of bounds
fish: show "$foo[2 1]"
                 ^
Array index out of bounds
fish: show $foo[2 1]
                ^