Builtin "unpack" now takes input from input stream instead of arg
Builtin "unpack" now takes input from input stream instead of arg

elves/elvish,CodyGuo/elvish,beni55/elvish,elves/elvish,elves/elvish,CodyGuo/elvish,elves/elvish,ke7ofi/elvish,elves/elvish,ke7ofi/elvish,beni55/elvish