Started working on line number flag

cmd/main.go

@@ -27,6 +27,7 @@ func main() {
 	printMatchesFlag := flag.Bool("p", false, "Prints start and end index of each match. Can only be used with '-t' for multi-line mode.")
 	caseInsensitiveFlag := flag.Bool("i", false, "Case-insensitive. Disregard the case of all characters.")
 	recursiveFlag := flag.Bool("r", false, "Recursively search all files in the given directory.")
+	lineNumFlag := flag.Bool("n", false, "For each line with a match, print the line number. Implies -l.")
 	matchNum := flag.Int("m", 0, "Print the match with the given index. Eg. -m 3 prints the third match.")
 	substituteText := flag.String("s", "", "Substitute the contents of each match with the given string. Overrides -o and -v")
 	flag.Parse()
@@ -110,9 +111,6 @@ func main() {
 		reader := bufio.NewReader(inputFile)
 		linesRead = false
 		for true {
-			if !(*lineFlag) && (!*onlyFlag) {
-				color.New(color.FgMagenta).Fprintf(out, "%s: ", inputFile.Name()) // The filename should be printed for every line, _except_ if we're not printing every line. This is the case with the lineFlag and onlyFlag
-			}
 			if linesRead {
 				break
 			}