do not filter empty single-child match-trees (breaks match-trees with a single but valid result
do not filter empty single-child match-trees (breaks match-trees with a single but valid result

thomastrapp/hext,thomastrapp/hext,thomastrapp/hext,thomastrapp/hext,thomastrapp/hext,thomastrapp/hext,thomastrapp/hext,thomastrapp/hext