From d31f68be58b3734ef55dc72ea389d6746e5e4b20 Mon Sep 17 00:00:00 2001
From: Georg Brandl <georg@python.org>
Date: Tue, 24 Feb 2009 21:05:50 +0100
Subject: [PATCH] Make "numbered" toctree attribute optional.

---
 sphinx/environment.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinx/environment.py b/sphinx/environment.py
index de2b24306..c210c3953 100644
--- a/sphinx/environment.py
+++ b/sphinx/environment.py
@@ -837,7 +837,7 @@ class BuildEnvironment:
            file relations from it."""
         if toctreenode['glob']:
             self.glob_toctrees.add(docname)
-        if toctreenode['numbered']:
+        if toctreenode.get('numbered'):
             self.numbered_toctrees.add(docname)
         includefiles = toctreenode['includefiles']
         for includefile in includefiles: