diff --git a/src/Eval.cpp b/src/Eval.cpp
index 51ea39298..fa054649c 100644
--- a/src/Eval.cpp
+++ b/src/Eval.cpp
@@ -224,6 +224,16 @@ void Eval::getOperators (std::vector <std::string>& all)
     all.push_back (operators[i].op);
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// Static.
+void Eval::getBinaryOperators (std::vector <std::string>& all)
+{
+  all.clear ();
+  for (unsigned int i = 0; i < NUM_OPERATORS; ++i)
+    if (operators[i].type == 'b')
+      all.push_back (operators[i].op);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 void Eval::evaluatePostfixStack (
   const std::vector <std::pair <std::string, Lexer::Type> >& tokens,
diff --git a/src/Eval.h b/src/Eval.h
index 3541a91b8..a7535891b 100644
--- a/src/Eval.h
+++ b/src/Eval.h
@@ -50,6 +50,7 @@ public:
   void debug (bool);
 
   static void getOperators (std::vector <std::string>&);
+  static void getBinaryOperators (std::vector <std::string>&);
 
 private:
   void evaluatePostfixStack (const std::vector <std::pair <std::string, Lexer::Type> >&, Variant&) const;