further improvements

repl.go

@@ -20,7 +20,7 @@ import (
 // Package repl implements the Read-Eval-Print-Loop or interactive console
 // by lexing, parsing and evaluating the input in the interpreter
 
-func VmREPL(args []string, debug bool) error {
+func VmREPL(args []string, debug, trace bool) error {
 	var state = vm.NewVMState()
 
 	object.Args = args
@@ -73,6 +73,8 @@ func VmREPL(args []string, debug bool) error {
 
 		mvm := vm.NewWithState("<stdin>", c.Bytecode(), state)
 		mvm.Debug = debug
+		mvm.Trace = trace
+
 		if err := mvm.Run(); err != nil {
 			fmt.Fprintf(t, "runtime error: %v\n", err)
 			continue
@@ -129,7 +131,7 @@ func acceptUntil(t *term.Terminal, start, end string) (string, error) {
 	return buf.String(), nil
 }
 
-func SimpleVmREPL(args []string, debug bool) {
+func SimpleVmREPL(args []string, debug, trace bool) {
 	var (
 		state  = vm.NewVMState()
 		reader = bufio.NewReader(os.Stdin)
@@ -171,6 +173,8 @@ func SimpleVmREPL(args []string, debug bool) {
 
 		mvm := vm.NewWithState("<stdin>", c.Bytecode(), state)
 		mvm.Debug = debug
+		mvm.Trace = trace
+
 		if err := mvm.Run(); err != nil {
 			fmt.Printf("runtime error: %v\n", err)
 			continue