nl_tokens: Compares two arrays for equality .
pl_tokens: function _isEqualArray ( a , b ) { if ( a === b ) { return <mask> ; } if ( ( a === undefined ) || ( b === undefined ) ) { return false ; } var i = a . length ; if ( i !== b . length ) { return false ; } while ( i -- ) { if ( a [ i ] !== b [ i ] ) { return false ; } } return true ; }