Don't quit if a file is not found, continue with any other files that are found

cmd/main.go

@@ -93,18 +93,19 @@ func main() {
 			inputFile, err := os.Open(inputFilename)
 			if err != nil {
 				fmt.Printf("%s: %s: No such file or directory\n", os.Args[0], inputFilename)
-				os.Exit(2)
-			}
-			fileStat, err := inputFile.Stat()
-			if err != nil {
-				fmt.Printf("%v\n", err)
-				os.Exit(2)
-			}
-			if fileStat.Mode().IsDir() {
-				fmt.Printf("%s: %s: Is a directory\n", os.Args[0], inputFilename)
-				os.Exit(2)
+			} else {
+				fileStat, err := inputFile.Stat()
+				if err != nil {
+					fmt.Printf("%v\n", err)
+					os.Exit(2)
+				} else {
+					if fileStat.Mode().IsDir() {
+						fmt.Printf("%s: %s: Is a directory\n", os.Args[0], inputFilename)
+					} else {
+						inputFiles = append(inputFiles, inputFile)
+					}
+				}
 			}
-			inputFiles = append(inputFiles, inputFile)
 		}
 	}
 
@@ -217,7 +218,7 @@ func main() {
 				if !(*invertFlag) && len(matchIndices) == 0 || *invertFlag && len(matchIndices) > 0 {
 					continue
 				} else {
-					if len(inputFiles) > 1 { // Don't need to print file name if there's only one file
+					if *recursiveFlag || len(flag.Args()) > 2 { // If we have 2 args, then we're only searching 1 file. We should only print the filename if there's more than 1 file.
 						color.New(color.FgMagenta).Fprintf(out, "%s:", inputFile.Name()) // Print filename
 					}
 					if *lineNumFlag {