Fix the REP loop to terminate early in case of any ParseError

bootstrap/pkg/core/core.go

@@ -32,6 +32,7 @@ func rep(rt *Runtime, line string) {
 
 	if err != nil {
 		PrintError(rt, err)
+		return
 	}
 
 	// Debug data, ugly right ? :))

bootstrap/pkg/core/parser.go

@@ -88,7 +88,7 @@ func (sp *StringParser) Buffer() *[]string {
 
 func makeErrorAtPoint(p IParsable, msg string, a ...interface{}) IError {
 	n := MakeSinglePointNode(p.Buffer(), p.GetLocation())
-	return MakeParsetimeErrorf(n, msg, a)
+	return MakeParsetimeErrorf(n, msg, a...)
 }
 
 func makeErrorFromError(parser IParsable, e error) IError {