@@ -803,6 +803,11 @@ func (f *FlagSet) parseOne() (bool, string, error) {

 		f.actual = make(map[string]*Flag)

 	}

 	f.actual[name] = flag

+	for _, n := range flag.Names {

+		if n == fmt.Sprintf("#%s", name) {

+			fmt.Fprintf(f.out(), "Warning: '-%s' is deprecated, it will be removed soon. See usage.\n", name)

+		}

+	}

 	return true, "", nil

 }