diff --git a/Parser.cpp b/Parser.cpp
index 95bda1d..2c62f27 100644
--- a/Parser.cpp
+++ b/Parser.cpp
@@ -37,6 +37,14 @@
 	return _status;
 }
 
+ParseResult ParseResult::operator ||(const ParseResult &other) const
+{
+    if (_status == COMPLETE || _status == INCOMPLETE)
+        return *this;
+    else
+        return other;
+}
+
 Parser::Parser(QString input)
 {
     _input = input;
diff --git a/Parser.h b/Parser.h
index f65e787..ee604f9 100644
--- a/Parser.h
+++ b/Parser.h
@@ -34,6 +34,8 @@
 	QString message() const;
 	int status() const;
 
+    ParseResult operator ||(const ParseResult &other) const;
+
 private:
 	int _status = COMPLETE;
 	QString _message = "";
diff --git a/Repl.cpp b/Repl.cpp
index fd09dfc..037a758 100644
--- a/Repl.cpp
+++ b/Repl.cpp
@@ -67,7 +67,7 @@
 			bool okay = true;
 			QList<Token> out;
 
-			for (const AstNode &node : expr)
+            for (const AstNode &node : qAsConst(expr))
 			{
 				RuntimeResult res = _eval.evaluate(node, VarContext());
 
@@ -91,16 +91,13 @@
 		}
 		else if (ret.status() == ParseResult::INCOMPLETE)
 		{
-			qDebug() << "INCOMPLETE";
-			ReadLine::rl_line_buffer = line.toUtf8().data();
-			// ReadLine::rl_insert_text("\n");
-			// ReadLine::rl_on_new_line();
-			ReadLine::rl_redisplay();
-			// ReadLine::rl_message("Incomplete");
+            qDebug() << "Parse error: incomplete input:" << ret.message();
+            ReadLine::rl_insert_text("Hello there!");
+            ReadLine::rl_redisplay();
 		}
 		else
 		{
-			qDebug() << "What?";
+            qDebug() << "Parse error:" << ret.message();
 		}
 	}
 }
@@ -131,7 +128,7 @@
 
 	ParseResult ret;
 
-	if ((ret = parser.parseFunctionDefinition(&func)))
+    if ((ret = parser.parseFunctionDefinition(&func)))
 	{
 		_eval.addFunction(func);
 		*expr = {};