From 6550c18745c5eb6b4b424f5a9b9bcb96fa5fe6d2 Mon Sep 17 00:00:00 2001
From: "Marshall T. Vandegrift" <llasram@gmail.com>
Date: Thu, 18 Dec 2008 22:51:25 -0500
Subject: [PATCH] Detect an NCX TOC which isn't mentioned by the /spine/@toc.

---
 src/calibre/ebooks/lit/oeb.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/calibre/ebooks/lit/oeb.py b/src/calibre/ebooks/lit/oeb.py
index 9bf1eb8c82..acc3275876 100644
--- a/src/calibre/ebooks/lit/oeb.py
+++ b/src/calibre/ebooks/lit/oeb.py
@@ -602,7 +602,10 @@ class OEBBook(object):
     def _toc_from_ncx(self, opf):
         result = xpath(opf, '/o2:package/o2:spine/@toc')
         if not result:
-            return False
+            expr = '/o2:package/o2:manifest/o2:item[@media-type="%s"]/@id'
+            result = xpath(opf, expr % NCX_MIME)
+            if len(result) != 1:
+                return False
         id = result[0]
         ncx = self.manifest[id].data
         self.manifest.remove(id)