Rudimentary matching works

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"os"
 	"slices"
 )
 
@@ -157,13 +158,18 @@ func thompson(re string) State {
 }
 
 func main() {
+	if len(os.Args) < 3 {
+		fmt.Println("ERROR: Missing cmdline args")
+	}
 	var re string
-	//	fmt.Scanln(&re)
-	re = "abab|abbb"
+	re = os.Args[1]
 	re_postfix := shuntingYard(re)
 	fmt.Println(re_postfix)
 	start := thompson(re_postfix)
-	UNUSED(start)
+	s, e, matched := match(&start, os.Args[2])
+	if matched {
+		fmt.Printf("Matched from %d to %d\n", s, e)
+	} else {
+		fmt.Printf("No match found.\n")
+	}
 }
-
-func UNUSED[T any](val T) {}