When attempting Custom filtering like in this example http://www.datatables.net/examples/plug-ins/range_filtering.html if the cellData is a value of 0 it is missing. In the DataTables function, _fnFilterData, the condition: if ( cellData ) returns false if cellData is 0, and cellData is not pushed into the filterData array, which it should for a value of 0.
This looks like a bug, or am I missing something?