Issue attachments for pydot/pydot-ng#92: https://github.com/pydot/pydot-ng/issues/92

pydot_simplify_encpsulated.patch

--- /usr/lib/python2.6/site-packages/pydot.pydot2014-06-12 06:22:57.000000000 +0400
+++ virtenv/lib/python2.6/site-packages/pydot.pydot2014-06-12 06:58:20.478835432 +0400
@@ -834,6 +834,11 @@

         return False

+    def __hash__(self):
+        if self.get_parent_graph().get_top_graph_type() == 'graph':
+            return hash(min(self.get_source(), self.get_destination())
+                    + max(self.get_source(), self.get_destination()))
+        return hash(self.get_source() + self.get_destination())


     def parse_node_ref(self, node_str):
@@ -1455,7 +1460,7 @@

                 edge = Edge(obj_dict=obj)

-                if self.obj_dict.get('simplify', False) and elm in edges_done:
+                if self.obj_dict.get('simplify', False) and edge in edges_done:
                     continue

                 graph.append( edge.to_string() + '\n' )