anchor.diff:      last_bidask,
       next_chunk_time = 0,
       chunk_map_offset,
  +    chunk_map = [],
       daystart
     }).
   
  
positive.code:   end, List1, List2).
  
  
  read_buffered_events(State) ->
    read_buffered_events(State, []).
  
  
negative.code:   StockDBOpts = update_db_options(SavedDBOpts, GivenStockDBOpts),
    State0 = parse_opts(StockDBOpts, #dbstate{}),
  
    StateFileOpen = State0#dbstate{
      file = File,
      chunk_map_offset = ChunkMapOffset},
  
    StateChunkRead = read_chunk_map(StateFileOpen),
    ?D({last_chunk, lists:last(StateChunkRead#dbstate.chunk_map)}),
  
    StateReady = fast_forward(StateChunkRead),
  
    ?D({last_packet, StateReady#dbstate.last_timestamp}),
    {ok, StateReady}.
  
  
  update_db_options(OldOptions, _NewOptions) ->
  