From e4387cf30819ed9b174e71359dc1919aa7872624 Mon Sep 17 00:00:00 2001
From: "Marshall T. Vandegrift" <llasram@gmail.com>
Date: Fri, 30 Jan 2009 18:18:46 -0500
Subject: [PATCH] Fix exception in case of OPF with no <dc:title/>.

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

diff --git a/src/calibre/ebooks/html.py b/src/calibre/ebooks/html.py
index bb7081658e..c78c45e42e 100644
--- a/src/calibre/ebooks/html.py
+++ b/src/calibre/ebooks/html.py
@@ -1003,7 +1003,10 @@ def merge_metadata(htmlfile, opf, opts):
         mi.cover = os.path.abspath(cover)
         
     if not mi.title:
-        mi.title = os.path.splitext(os.path.basename(htmlfile))[0]
+        if htmlfile:
+            mi.title = os.path.splitext(os.path.basename(htmlfile))[0]
+        else:
+            mi.title = _('Unknown')
     if not mi.authors:
         mi.authors = [_('Unknown')]
     return mi