;
    ;;
;    ;;
Foo
Foo;
;Foo
Foo    ;    ;
    ;Foo;
;    ;Foo
Foo;BAR;
Foo;;    BAR
;Foo;BAR
Foo;BAR;baz;  embedded\ space\ and\ \$p\*cia\!\ c\#\@rs
12.34    ;    Foo;12375e-3;BAR;1234b-2    ;baz;    1234   
"tab	space comma, semicolon; pipe| dollar$"  ;  "quux \"blart\"";  ?a\-lisp\-symbol