main.go: Don't assume Evaluator.Eval returns ContextualError
main.go: Don't assume Evaluator.Eval returns ContextualError

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