From 207f7b6b8da84b00ca1e5f963fdbe4b4fe917289 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 30 May 2008 09:22:24 -0700
Subject: [PATCH] Fix #721

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

diff --git a/src/calibre/__init__.py b/src/calibre/__init__.py
index 18abc23892..f278f5d244 100644
--- a/src/calibre/__init__.py
+++ b/src/calibre/__init__.py
@@ -590,7 +590,10 @@ def entity_to_unicode(match, exceptions=[], encoding='cp1252'):
             return unichr(num)
         return chr(num).decode(encoding)
     if ent.startswith(u'#'):
-        num = int(ent[1:])
+        try:
+            num = int(ent[1:])
+        except ValueError:
+            return '&'+ent+';'
         if encoding is None or num > 255:
             return unichr(num)
         try: