Messing around with sweet.js (sweetjs.org)

sweet.js

macro $ttos {
  case {_ $x} => {
    var pattern = #{$x};
    var tokenString = pattern[0].token.value.toString();
    var stringValue = makeValue(tokenString, #{$here});
    return withSyntax($val = [stringValue]) {
      return #{$val};
    }
  }
}

macro < {
  rule { $sel $($attr=$val) (,) ... > } => {
    "<"+($ttos $sel)+" "+$(($ttos $attr)+"="+($ttos $val))...+">"
  }
}

console.log(<a href='/'>);

Any way to make this repeating and/or recursive? Multi-line?