def main(split1, split2) : template : pass-through {
  [% IF split1 %]
    split1 $@
  [% ELSIF split2 %]
    split2 $@
  [% ELSE %]
    echo "$@"
  [% END %]
}


def split1(z=i) : perl :pass_through :template {
  print join(':', @ARGV);
  [% IF z %]
    print "=[% z * 2 %]";
  [% END %]
  print "\n";
}


def split2 : perl :pass_through {
  print join(':', @ARGV). "\n";
}