tidy up

README.md

@@ -16,4 +16,4 @@ This will generate an image in current directory.
 
 See **./barnsley-fern --help** for available flags.
 
-Image on this page was generated with **./barnsley-fern-go -h 500 -v 500 -rainbow**
+Image on this page was generated with **./barnsley-fern-go -x 500 -y 500 -c 3 -out example/barnsley-fern.png**

go.mod

@@ -1,3 +1,5 @@
 module code.uint32.ru/dmitry/barnsley-fern-go
 
 go 1.24.1
+
+require github.com/AlexEidt/Vidio v1.5.1 // indirect

go.sum

@@ -0,0 +1,2 @@
+github.com/AlexEidt/Vidio v1.5.1 h1:tovwvtgQagUz1vifiL9OeWkg1fP/XUzFazFKh7tFtaE=
+github.com/AlexEidt/Vidio v1.5.1/go.mod h1:djhIMnWMqPrC3X6nB6ymGX6uWWlgw+VayYGKE1bNwmI=

image.go

@@ -35,7 +35,7 @@ func createBarnsleyFernImage(s *settings, w io.Writer) error {
 		}
 
 	default:
-		return fmt.Errorf("%w: %d", s.OM)
+		return fmt.Errorf("%w: %d", errUnknownFormat, s.OM)
 	}
 
 	return nil

main.go

@@ -19,9 +19,6 @@ func run() int {
 		return 1
 	}
 
-	defer func() {
-	}()
-
 	if err := createBarnsleyFernImage(s, file); err != nil {
 		fmt.Println("ошибка создания изображения:", err)
 		return 2
@@ -32,7 +29,7 @@ func run() int {
 		return 3
 	}
 
-	fmt.Println("done...")
+	fmt.Println("done")
 
 	return 0
 }