diff --git a/Lib/ruby/rubystdcommon.swg b/Lib/ruby/rubystdcommon.swg
new file mode 100644
index 000000000..58e681403
--- /dev/null
+++ b/Lib/ruby/rubystdcommon.swg
@@ -0,0 +1,240 @@
+%fragment("StdTraits","header",fragment="StdTraitsCommon")
+{
+namespace swig {  
+  /*
+    Traits that provides the from method
+  */
+  template <class Type> struct traits_from_ptr {
+    static VALUE from(Type *val, int owner = 0) {
+      return SWIG_NewPointerObj(val, type_info<Type>(), owner);
+    }
+  };
+
+  template <class Type> struct traits_from {
+    static VALUE from(const Type& val) {
+    fprintf( stderr, "%s %d\n", __PRETTY_FUNCTION__, __LINE__);
+      return traits_from_ptr<Type>::from(new Type(val), 1);
+    }
+  };
+
+  template <class Type> struct traits_from<Type *> {
+    static VALUE from(Type* val) {
+      return traits_from_ptr<Type>::from(val, 0);
+    }
+  };
+
+  template <class Type> struct traits_from<const Type *> {
+    static VALUE from(const Type* val) {
+      fprintf( stderr, "conversion from const Type*n");
+      return traits_from_ptr<Type>::from(const_cast<Type*>(val), 0);
+    }
+  };
+
+
+  template <class Type>
+  inline VALUE from(const Type& val) {
+    fprintf( stderr, "%s %d\n", __PRETTY_FUNCTION__, __LINE__);
+    return traits_from<Type>::from(val);
+  }
+
+  template <class Type>
+  inline VALUE from_ptr(Type* val, int owner) {
+    return traits_from_ptr<Type>::from(val, owner);
+  }
+
+  /*
+    Traits that provides the asval/as/check method
+  */
+  template <class Type>
+  struct traits_asptr {   
+    static int asptr(VALUE obj, Type **val) {
+      Type *p;
+      int res = (SWIG_ConvertPtr(obj, (void**)&p, type_info<Type>(), 0) == SWIG_OK) ? SWIG_OLDOBJ : 0;
+      if (SWIG_IsOK(res)) {
+	if (val) *val = p;
+      }
+      return res;
+    }
+  }; 
+
+  template <class Type>
+  inline int asptr(VALUE obj, Type **vptr) {
+    return traits_asptr<Type>::asptr(obj, vptr);
+  }
+
+  template <class Type> 
+  struct traits_asval {
+    static int asval(VALUE obj, Type *val) {
+      if (val) {
+	Type *p = 0;
+	int res = traits_asptr<Type>::asptr(obj, &p);
+	if (!SWIG_IsOK(res)) return res;	
+	if (p) {
+	  typedef typename noconst_traits<Type>::noconst_type noconst_type;
+	  *(const_cast<noconst_type*>(val)) = *p;
+	  if (SWIG_IsNewObj(res)){
+	    %delete(p);
+	    res = SWIG_DelNewMask(res);
+	  }
+	  return res;
+	} else {
+	  return SWIG_ERROR;
+	}
+      } else {
+	return traits_asptr<Type>::asptr(obj, (Type **)(0));
+      }
+    }
+  };
+
+  template <class Type> struct traits_asval<Type*> {
+    static int asval(VALUE obj, Type **val) {
+      if (val) {
+        typedef typename noconst_traits<Type>::noconst_type noconst_type;
+        noconst_type *p = 0;
+        int res = traits_asptr<noconst_type>::asptr(obj,  &p);
+        if (SWIG_IsOK(res)) {
+          *(const_cast<noconst_type**>(val)) = p;
+	}
+	return res;
+      } else {
+	return traits_asptr<Type>::asptr(obj, (Type **)(0));
+      }
+    }
+  };
+  
+  template <class Type>
+  inline int asval(VALUE obj, Type *val) {
+    return traits_asval<Type>::asval(obj, val);
+  }
+
+  template <class Type> 
+  struct traits_as<Type, value_category> {
+    static Type as(VALUE obj, bool throw_error) {
+      Type v;
+      int res = asval(obj, &v);
+      if (!obj || !SWIG_IsOK(res)) {
+	VALUE lastErr = rb_gv_get("$!");
+	if (lastErr == Qnil) {
+	  %type_error(swig::type_name<Type>());
+	}
+	if (throw_error) throw std::invalid_argument("bad type");
+      }
+      return v;
+    }
+  };
+
+  template <class Type> 
+  struct traits_as<Type, pointer_category> {
+    static Type as(VALUE obj, bool throw_error) {
+      Type *v = 0;      
+      int res = (obj ? traits_asptr<Type>::asptr(obj, &v) : SWIG_ERROR);
+      if (SWIG_IsOK(res) && v) {
+	if (SWIG_IsNewObj(res)) {
+	  Type r(*v);
+	  %delete(v);
+	  return r;
+	} else {
+	  return *v;
+	}
+      } else {
+	// Uninitialized return value, no Type() constructor required.
+	static Type *v_def = (Type*) malloc(sizeof(Type));
+	VALUE lastErr = rb_gv_get("$!");
+	if (lastErr == Qnil) {
+	  %type_error(swig::type_name<Type>());
+	}
+	if (throw_error) throw std::invalid_argument("bad type");
+	memset(v_def,0,sizeof(Type));
+	return *v_def;
+      }
+    }
+  };
+
+  template <class Type> 
+  struct traits_as<Type*, pointer_category> {
+    static Type* as(VALUE obj, bool throw_error) {
+      Type *v = 0;      
+      int res = (obj ? traits_asptr<Type>::asptr(obj, &v) : SWIG_ERROR);
+      if (SWIG_IsOK(res)) {
+	return v;
+      } else {
+	VALUE lastErr = rb_gv_get("$!");
+	if (lastErr == Qnil) {
+	  %type_error(swig::type_name<Type>());
+	}
+	if (throw_error) throw std::invalid_argument("bad type");
+	return 0;
+      }
+    }
+  };
+    
+  template <class Type>
+  inline Type as(VALUE obj, bool te = false) {
+    return traits_as<Type, typename traits<Type>::category>::as(obj, te);
+  }
+
+  template <class Type> 
+  struct traits_check<Type, value_category> {
+    static bool check(VALUE obj) {
+      int res = obj ? asval(obj, (Type *)(0)) : SWIG_ERROR;
+      return SWIG_IsOK(res) ? true : false;
+    }
+  };
+
+  template <class Type> 
+  struct traits_check<Type, pointer_category> {
+    static bool check(VALUE obj) {
+      int res = obj ? asptr(obj, (Type **)(0)) : SWIG_ERROR;
+      return SWIG_IsOK(res) ? true : false;
+    }
+  };
+
+  template <class Type>
+  inline bool check(VALUE obj) {
+    return traits_check<Type, typename traits<Type>::category>::check(obj);
+  }
+}
+}
+
+//
+// Backward compatibility
+//
+
+%define %specialize_std_container(Type,Check,As,From)
+%{
+namespace swig {
+  template <>  struct traits_asval<Type > {   
+    typedef Type value_type;
+    static int asval(VALUE obj, value_type *val) {
+      if (Check(obj)) {
+	if (val) *val = As(obj);
+	return SWIG_OK;
+      }
+      return SWIG_ERROR;
+    }
+  };
+  template <>  struct traits_from<Type > {
+    typedef Type value_type;
+    static VALUE from(const value_type& val) {
+      fprintf( stderr, "%s %d\n", __PRETTY_FUNCTION__, __LINE__);
+      return From(val);
+    }
+  };
+
+  template <> 
+  struct traits_check<Type, value_category> {
+    static int check(VALUE obj) {
+      int res = Check(obj);
+      return obj && res ? res : 0;
+    }
+  };
+}
+%}
+%enddef
+
+
+#define specialize_std_vector(Type,Check,As,From) %specialize_std_container(%arg(Type),Check,As,From)
+#define specialize_std_list(Type,Check,As,From) %specialize_std_container(%arg(Type),Check,As,From)
+#define specialize_std_deque(Type,Check,As,From) %specialize_std_container(%arg(Type),Check,As,From)
+#define specialize_std_set(Type,Check,As,From) %specialize_std_container(%arg(Type),Check,As,From)
+#define specialize_std_multiset(Type,Check,As,From) %specialize_std_container(%arg(Type),Check,As,From)