Clean up some duplication in interpolate
Clean up some duplication in interpolate

slavapestov/factor,bjourne/factor,factor/factor,AlexIljin/factor,bpollack/factor,nicolas-p/factor,littledan/Factor,Keyholder/factor,kingcons/factor,bjourne/factor,kingcons/factor,mcandre/factor,kingcons/factor,nicolas-p/factor,jwmerrill/factor,tgunr/factor,bpollack/factor,mrjbq7/factor,bpollack/factor,slavapestov/factor,mcandre/factor,bpollack/factor,slavapestov/factor,slavapestov/factor,AlexIljin/factor,dch/factor,jwmerrill/factor,sarvex/factor-lang,tgunr/factor,kingcons/factor,erg/factor,tgunr/factor,factor/factor,bjourne/factor,slavapestov/factor,dch/factor,mcandre/factor,seckar/factor,erg/factor,mrjbq7/factor,ceninan/factor,sarvex/factor-lang,seckar/factor,cataska/factor,AlexIljin/factor,factor/factor,littledan/Factor,bpollack/factor,tgunr/factor,cataska/factor,mcandre/factor,tgunr/factor,ceninan/factor,dch/factor,cataska/factor,ehird/factor,cataska/factor,bjourne/factor,factor/factor,nicolas-p/factor,erg/factor,littledan/Factor,jwmerrill/factor,mcandre/factor,mrjbq7/factor,erg/factor,seckar/factor,erg/factor,sarvex/factor-lang,erg/factor,factor/factor,Keyholder/factor,AlexIljin/factor,mrjbq7/factor,erg/factor,ehird/factor,bjourne/factor,dch/factor,ehird/factor,nicolas-p/factor,factor/factor,mrjbq7/factor,AlexIljin/factor,bjourne/factor,ceninan/factor,dch/factor,bpollack/factor,nicolas-p/factor,nicolas-p/factor,mcandre/factor,tgunr/factor,bpollack/factor,mcandre/factor,sarvex/factor-lang,slavapestov/factor,ceninan/factor,mrjbq7/factor,sarvex/factor-lang,Keyholder/factor,sarvex/factor-lang,dch/factor,littledan/Factor,sarvex/factor-lang,AlexIljin/factor,AlexIljin/factor,nicolas-p/factor,bjourne/factor,slavapestov/factor