improve handling of default tag
improve handling of default tag

oberluz/marble,Earthwings/marble,adraghici/marble,tzapzoor/marble,quannt24/marble,utkuaydin/marble,rku/marble,tzapzoor/marble,Earthwings/marble,quannt24/marble,Earthwings/marble,probonopd/marble,quannt24/marble,utkuaydin/marble,probonopd/marble,adraghici/marble,rku/marble,quannt24/marble,rku/marble,David-Gil/marble-dev,probonopd/marble,tucnak/marble,oberluz/marble,tzapzoor/marble,tucnak/marble,adraghici/marble,David-Gil/marble-dev,tucnak/marble,probonopd/marble,adraghici/marble,David-Gil/marble-dev,probonopd/marble,AndreiDuma/marble,tucnak/marble,oberluz/marble,AndreiDuma/marble,tzapzoor/marble,AndreiDuma/marble,oberluz/marble,David-Gil/marble-dev,probonopd/marble,utkuaydin/marble,AndreiDuma/marble,utkuaydin/marble,tucnak/marble,tucnak/marble,tzapzoor/marble,AndreiDuma/marble,rku/marble,utkuaydin/marble,AndreiDuma/marble,tzapzoor/marble,Earthwings/marble,David-Gil/marble-dev,quannt24/marble,Earthwings/marble,rku/marble,tzapzoor/marble,oberluz/marble,tzapzoor/marble,David-Gil/marble-dev,adraghici/marble,quannt24/marble,oberluz/marble,probonopd/marble,utkuaydin/marble,adraghici/marble,Earthwings/marble,quannt24/marble,tucnak/marble,rku/marble