$NetBSD: patch-ab,v 1.1 2006/06/06 19:26:30 joerg Exp $

--- happydoclib/docstring/StructuredText/STDOM.py.orig	2006-06-06 19:20:54.000000000 +0000
+++ happydoclib/docstring/StructuredText/STDOM.py
@@ -171,7 +171,7 @@ class NodeWrapper(ParentNode):
                           type=type,
                           st=type(''),
                           getattr=getattr,
-                          None=None):
+                          My_None=None):
 
       """
       The node immediately preceding this node.  If
@@ -180,17 +180,17 @@ class NodeWrapper(ParentNode):
       
       children = self.aq_parent.getChildren()
       if not children:
-         return None
+         return My_None
 
-      index=getattr(self, '_DOMIndex', None)
-      if index is None:
+      index=getattr(self, '_DOMIndex', My_None)
+      if index is My_None:
          index=self._getDOMIndex(children)
-         if index is None: return None
+         if index is My_None: return My_None
 
       index=index-1
-      if index < 0: return None
+      if index < 0: return My_None
       try: n=children[index]
-      except IndexError: return None
+      except IndexError: return My_None
       else:
          if type(n) is st:
             n=TextNode(n)
@@ -243,9 +243,9 @@ class NodeWrapper(ParentNode):
                           type=type,
                           st=type(''),
                           getattr=getattr,
-                          None=None):
+                          My_None=None):
 
-      return self.getPreviousSibling(type,st,getattr,None)
+      return self.getPreviousSibling(type,st,getattr,My_None)
       
    def _get_NextSibling(self, type=type, st=type('')):
       return self.getNextSibling(type,st)
@@ -292,7 +292,7 @@ class Node(ParentNode):
                           type=type,
                           st=type(''),
                           getattr=getattr,
-                          None=None):
+                          My_None=None):
       """
       The node immediately preceding this node.  If
       there is no such node, this returns None.
@@ -346,9 +346,9 @@ class Node(ParentNode):
                           type=type,
                           st=type(''),
                           getattr=getattr,
-                          None=None):
+                          My_None=None):
       
-      return self.getPreviousSibling(type,st,getattr,None)
+      return self.getPreviousSibling(type,st,getattr,My_None)
       
    def _get_NextSibling(self, type=type, st=type('')):
       return self.getNextSibling()