nl_tokens: If the string is padded returns a curried function with the a cached padding string or false if no padding .
pl_tokens: function isPadded ( origA , origB ) { if ( hasZeros ( origA ) || hasZeros ( origB ) ) { var alen = length ( origA ) ; var blen = <mask> ( origB ) ; var len = alen >= blen ? alen : blen ; return function ( a ) { return repeatStr ( '0' , len - length ( a ) ) ; } ; } return false ; }