Add command line switch for hiding line numbers

moar.go

@@ -140,6 +140,7 @@ func main() {
 	styleOption := flagSet.String("style", "native",
 		"Highlighting style from https://xyproto.github.io/splash/docs/longer/all.html")
 	colorsOption := flagSet.String("colors", "16M", "Highlighting palette size: 8, 16, 256, 16M")
+	noLineNumbers := flagSet.Bool("no-linenumbers", false, "Hide line numbers on startup, press left arrow key to show")
 
 	// Combine flags from environment and from command line
 	flags := os.Args[1:]
@@ -236,7 +237,7 @@ func main() {
 	if stdinIsRedirected {
 		// Display input pipe contents
 		reader := m.NewReaderFromStream("", os.Stdin)
-		startPaging(reader, *wrap)
+		startPaging(reader, *wrap, *noLineNumbers)
 		return
 	}
 
@@ -246,10 +247,10 @@ func main() {
 		fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
 		os.Exit(1)
 	}
-	startPaging(reader, *wrap)
+	startPaging(reader, *wrap, *noLineNumbers)
 }
 
-func startPaging(reader *m.Reader, wrapLongLines bool) {
+func startPaging(reader *m.Reader, wrapLongLines bool, noLineNumbers bool) {
 	screen, e := twin.NewScreen()
 	if e != nil {
 		panic(e)
@@ -279,5 +280,6 @@ func startPaging(reader *m.Reader, wrapLongLines bool) {
 	log.SetOutput(&loglines)
 	pager := m.NewPager(reader)
 	pager.WrapLongLines = wrapLongLines
+	pager.ShowLineNumbers = !noLineNumbers
 	pager.StartPaging(screen)
 }