Implement undoing

main.go

@@ -22,12 +22,15 @@ const PathColor = Green
 
 var FileRegex, _ = regexp.Compile(`sync\.ya?ml$`)
 var programName = os.Args[0]
+var undo = false
 
 func main() {
 	recurse := flag.String("r", "", "recurse into directories")
 	file := flag.String("f", "", "file to read instructions from")
 	debug := flag.Bool("d", false, "debug")
+	undoF := flag.Bool("u", false, "undo")
 	flag.Parse()
+	undo = *undoF
 
 	if *debug {
 		log.SetFlags(log.Lmicroseconds | log.Lshortfile)