More Kleene star fixes

main.go

@@ -143,7 +143,8 @@ func thompson(re string) *State {
 			s2 := pop(&nfa)
 			s3 := State{}
 			s3.transitions = make(map[int][]*State)
-			s3.output = append(s3.output, s1, s2)
+			s3.output = append(s3.output, s1.output...)
+			s3.output = append(s3.output, s2.output...)
 			s3.transitions[s1.content] = append(s3.transitions[s1.content], s1)
 			s3.transitions[s2.content] = append(s3.transitions[s2.content], s2)
 			s3.content = EPSILON
@@ -163,6 +164,11 @@ func thompson(re string) *State {
 }
 
 func main() {
+	// Process:
+	// 1. Convert regex into postfix notation (Shunting-Yard algorithm)
+	// 		a. Add explicit concatenation operators to facilitate this
+	// 2. Build NFA from postfix representation (Thompson's algorithm)
+	// 3. Run the string against the NFA
 	if len(os.Args) < 3 {
 		fmt.Println("ERROR: Missing cmdline args")
 		os.Exit(22)