Fix up parser validity
Fix up parser validity

leading ~doz is ok if it's not the only word
leading ~dozzod is never ok

cgyarvin/arvo,joemfb/arvo,urbit/urbit,urbit/urbit,joemfb/arvo,eglaysher/arvo,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,jfranklin9000/urbit,belisarius222/arvo,ngzax/urbit,urbit/urbit,jfranklin9000/urbit,solri/arvo,Fang-/arvo,jfranklin9000/urbit,jfranklin9000/urbit,ohAitch/arvo,ngzax/urbit,jfranklin9000/urbit,ngzax/urbit,ngzax/urbit,ohAitch/arvo,belisarius222/arvo,urbit/urbit,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,cgyarvin/arvo,urbit/urbit