From 8d513f09f25550bf04affd70e13fee0f33255a48 Mon Sep 17 00:00:00 2001
From: GRiker <griker@hotmail.com>
Date: Tue, 4 Jun 2013 10:59:43 -0600
Subject: [PATCH] Fixed lp:1066922, error processing sort letters in catalog
 under OS X 10.6.8, 10.7.5.

---
 src/calibre/library/catalogs/epub_mobi_builder.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/calibre/library/catalogs/epub_mobi_builder.py b/src/calibre/library/catalogs/epub_mobi_builder.py
index 04116cb0e3..62f94aedc4 100644
--- a/src/calibre/library/catalogs/epub_mobi_builder.py
+++ b/src/calibre/library/catalogs/epub_mobi_builder.py
@@ -706,6 +706,8 @@ class CatalogBuilder(object):
                     if last_c in exceptions.keys():
                         last_c = exceptions[unicode(last_c)]
                     last_ordnum = ordnum
+                else:
+                    last_c = cl_list[idx-1]
                 cl_list[idx] = last_c
 
         if self.DEBUG and self.opts.verbose: