function.go: if the right most parameter is repeteable (pfRepeat), then it does not increment the min-arg count

function.go

@@ -168,6 +168,7 @@ func newFuncInfo(name string, functor Functor, returnType string, params []ExprF
 				return nil, fmt.Errorf("can't specify non-optional param after optional ones: %q", p.Name())
 			}
 			if p.IsRepeat() {
+				minArgs--
 				maxArgs = -1
 			}
 		}