functors: use with-words instead of more fragile qualified-vocabs pop*.
functors: use with-words instead of more fragile qualified-vocabs pop*.

mrjbq7/factor,factor/factor,bpollack/factor,mrjbq7/factor,factor/factor,bpollack/factor,mrjbq7/factor,bpollack/factor,tgunr/factor,tgunr/factor,bpollack/factor,mrjbq7/factor,factor/factor,mrjbq7/factor,tgunr/factor,bpollack/factor,tgunr/factor,tgunr/factor,factor/factor,bpollack/factor,factor/factor,factor/factor,bpollack/factor,mrjbq7/factor,tgunr/factor