RosettaCodeData/Task/Tokenize-a-string/Refal/tokenize-a-string.refal

$ENTRY Go {
    = <Prout <Join ('. ') <Split (',') 'Hello,How,Are,You,Today'>>>;
};

Split {
    (e.S) = ;
    (e.S) e.1 e.S e.2 = (e.1) <Split (e.S) e.2>;
    (e.S) e.1 = (e.1);
};

Join {
    (e.J) = ;
    (e.J) (e.1) = e.1;
    (e.J) (e.1) e.2 = e.1 e.J <Join (e.J) e.2>;
};