nl_tokens: Track that count items were removed at index .
pl_tokens: function ( index , count ) { if ( count < 1 ) { return ; } var match = this . _findArrayOperation ( index ) , arrayOperation = match . operation , arrayOperationIndex = match . index , arrayOperationRangeStart = match . rangeStart , newArrayOperation , composeIndex ; newArrayOperation = <mask> ArrayOperation ( DELETE , count ) ; if ( ! match . split ) { // insert left of arrayOperation this . _operations . splice ( arrayOperationIndex , 0 , newArrayOperation ) ; composeIndex = arrayOperationIndex ; } else { this . _split ( arrayOperationIndex , index - arrayOperationRangeStart , newArrayOperation ) ; composeIndex = arrayOperationIndex + 1 ; } return this . _composeDelete ( composeIndex ) ; }