improve message when no record matches

main.go

@@ -75,12 +75,16 @@ func selectRecordsToDelete(recs []libdns.Record) []libdns.Record {
 		}
 		return
 	}()
-	fmt.Printf("Records matching %s\n", name)
+	if len(recs) == 0 {
+		fmt.Printf("No Records match %s\n", name)
+		return nil
+	}
+	fmt.Printf("Records matching %s\n\n", name)
 	for i, r := range recs {
 		fmt.Printf("%5d  %6s   %s\n", i, r.Type, r.Value)
 	}
 	var delRange string
-	fmt.Print("Enter record indexes seperated by comma(,) to delete. Use hyphen(-) for a closed range. Also can be all or none\nIndexes: ")
+	fmt.Print("\nEnter record indexes seperated by comma(,) to delete. Use hyphen(-) for a closed range. Also can be all or none\nIndexes: ")
 	if _, err := fmt.Scanln(&delRange); err != nil {
 		log.Panicln(err)
 	}

main_test.go

@@ -14,6 +14,14 @@ func TestParseRange(t *testing.T) {
 	}
 }
 
+func TestParseRangeEmpty(t *testing.T) {
+	expectedLen := 0
+	actual := parseRange("", 10)
+	if expectedLen != len(actual) {
+		t.Errorf("unexpected %#v\n", actual)
+	}
+}
+
 func TestParseIP(t *testing.T) {
 	var ip net.IP
 	if err := ip.UnmarshalText([]byte("127.0.0.1")); err != nil {