Update field completion.
Update field completion.

 * Make completion work with `?' character
 * Fix field reset when pressing <Escape> key

githubert/facette,iaean/facette,psytra/facette,psytra/facette,psytra/facette,Skrupellos/facette,vovkasm/facette,hirocaster/facette,vovkasm/facette,facette/facette,Skrupellos/facette,iaean/facette,facette/facette,vovkasm/facette,yonglehou/facette,githubert/facette,facette/facette,githubert/facette,yonglehou/facette,Skrupellos/facette,hirocaster/facette,hirocaster/facette,yonglehou/facette,iaean/facette,facette/facette