getReadState() Return a character that indicates what we are currently reading.
Returns '\n' if we are not inside read; '\"' if reading a string;
'|' if inside a comment; '(' if inside a list; and
' ' if otherwise inside a read.
Return a character that indicates what we are currently reading.
Returns '\n' if we are not inside read; '\"' if reading a string;
'|' if inside a comment; '(' if inside a list; and
' ' if otherwise inside a read.