a bare Bare\ $string\;;
b bare Single-quoted\ $string\;;
c bare Double-quored\ $string\;;
a squoted 'Bare $string;';
b squoted 'Single-quoted $string;';
c squoted 'Double-quored $string;';
a dquoted "Bare $string;";
b dquoted "Single-quoted $string;";
c dquoted "Double-quored $string;";
all bare Bare\ $string\;Single-quoted\ $string\;Double-quored\ $string\;;
all squoted 'Bare $string;Single-quoted $string;Double-quored $string;';
all dquoted "Bare $string;Single-quoted $string;Double-quored $string;";
bare joined with x Bare\ $string\;xSingle-quoted\ $string\;xDouble-quored\ $string\;;
invalid ${a,something};
notarray $#a;
notarray $#{a};