1 //gofmt -stdin 2 3 if err != nil { 4 source := strings.NewReader(`line 1. 5line 2. 6`) 7 return source 8 } 9 10 f := func(hat, tail string) { 11 12 fmt.Println(hat+` 13foo 14 15 16`+tail, 17 "more", 18 "and more") 19 } 20