Updated README.md and minor logging corrections

README.md

@@ -404,7 +404,7 @@ Saves the passed GIF as an ascii art GIF with the name `<image-name>-ascii-art.g
 
 > **Note:** This flag will be ignored if `--save-img` or `--save-gif` flags are not set
 
-This flag takes an RGBA value that sets the background color in saved png and gif files.
+This flag takes an RGBA value that sets the background color in saved png and gif files. The fourth value (alpha value) is the measure of background opacity ranging between 0 and 100.
 
 ```
 ascii-image-converter [image paths/urls] -s . --save-bg 255,255,255,100 # For white background

cmd/root.go

@@ -58,7 +58,7 @@ var (
 	rootCmd = &cobra.Command{
 		Use:     "ascii-image-converter [image paths/urls]",
 		Short:   "Converts images and gifs into ascii art",
-		Version: "1.11.0",
+		Version: "1.12.0",
 		Long:    "This tool converts images into ascii art and prints them on the terminal.\nFurther configuration can be managed with flags.",
 
 		// Not RunE since help text is getting larger and seeing it for every error impacts user experience
@@ -86,7 +86,7 @@ var (
 				Full:                full,
 				FontFilePath:        fontFile,
 				FontColor:           [3]int{fontColor[0], fontColor[1], fontColor[2]},
-				SaveBackgroundColor: [4]int{saveBgColor[0], saveBgColor[1], saveBgColor[2],saveBgColor[3]},
+				SaveBackgroundColor: [4]int{saveBgColor[0], saveBgColor[1], saveBgColor[2], saveBgColor[3]},
 				Braille:             braille,
 				Threshold:           threshold,
 				Dither:              dither,
@@ -149,7 +149,7 @@ func init() {
 	rootCmd.PersistentFlags().StringVarP(&saveImagePath, "save-img", "s", "", "Save ascii art as a .png file\nFormat: <image-name>-ascii-art.png\nImage will be saved in passed path\n(pass . for current directory)\n")
 	rootCmd.PersistentFlags().StringVar(&saveTxtPath, "save-txt", "", "Save ascii art as a .txt file\nFormat: <image-name>-ascii-art.txt\nFile will be saved in passed path\n(pass . for current directory)\n")
 	rootCmd.PersistentFlags().StringVar(&saveGifPath, "save-gif", "", "If input is a gif, save it as a .gif file\nFormat: <gif-name>-ascii-art.gif\nGif will be saved in passed path\n(pass . for current directory)\n")
-	rootCmd.PersistentFlags().IntSliceVar(&saveBgColor, "save-bg", nil, "Set background color for --save-img\nand --save-gif flags\nPass an RGBA value\ne.g. --save-bg 255,255,255,100\n(Defaults to 0,0,0,1)\n")
+	rootCmd.PersistentFlags().IntSliceVar(&saveBgColor, "save-bg", nil, "Set background color for --save-img\nand --save-gif flags\nPass an RGBA value\ne.g. --save-bg 255,255,255,100\n(Defaults to 0,0,0,100)\n")
 	rootCmd.PersistentFlags().StringVar(&fontFile, "font", "", "Set font for --save-img and --save-gif flags\nPass file path to font .ttf file\ne.g. --font ./RobotoMono-Regular.ttf\n(Defaults to Hack-Regular for ascii and\n DejaVuSans-Oblique for braille)\n")
 	rootCmd.PersistentFlags().IntSliceVar(&fontColor, "font-color", nil, "Set font color for terminal as well as\n--save-img and --save-gif flags\nPass an RGB value\ne.g. --font-color 0,0,0\n(Defaults to 255,255,255)\n")
 	rootCmd.PersistentFlags().BoolVar(&onlySave, "only-save", false, "Don't print ascii art on terminal\nif some saving flag is passed\n")

cmd/util.go

@@ -115,13 +115,13 @@ func checkInputAndFlags(args []string) bool {
 		}
 
 		if saveBgColor[0] < 0 || saveBgColor[1] < 0 || saveBgColor[2] < 0 || saveBgColor[3] < 0 {
-			fmt.Printf("Error: RBG values must be between 0 and 255\n\n")
+			fmt.Printf("Error: RBG values must be between 0 and 255\n")
 			fmt.Printf("Error: Opacity value must be between 0 and 100\n\n")
 			return true
 		}
 
-		if saveBgColor[0] > 255 || saveBgColor[1] > 255 || saveBgColor[2] > 255 || saveBgColor[3] > 100{
-			fmt.Printf("Error: RBG values must be between 0 and 255\n\n")
+		if saveBgColor[0] > 255 || saveBgColor[1] > 255 || saveBgColor[2] > 255 || saveBgColor[3] > 100 {
+			fmt.Printf("Error: RBG values must be between 0 and 255\n")
 			fmt.Printf("Error: Opacity value must be between 0 and 100\n\n")
 			return true
 		}