From ff8fc90ac71b672099da4876053908a85c91b0a6 Mon Sep 17 00:00:00 2001
From: Miroslav Stampar <miroslav.stampar@gmail.com>
Date: Wed, 13 Jul 2011 06:44:15 +0000
Subject: [PATCH] bug fix

---
 doc/THANKS         | 3 +++
 lib/core/common.py | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/doc/THANKS b/doc/THANKS
index 06bd4ee38..aebb1cda1 100644
--- a/doc/THANKS
+++ b/doc/THANKS
@@ -541,6 +541,9 @@ buawig <buawig@gmail.com>
 Bugtrace <bugtrace@gmail.com>
     for reporting several bugs
 
+Christian S. <christian_s@linuxmail.org>
+    for reporting a minor bug
+
 clav <elclav@gmail.com>
     for reporting a minor bug
 
diff --git a/lib/core/common.py b/lib/core/common.py
index b6a471192..b834c11d7 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -2785,7 +2785,7 @@ def safeCSValue(value):
 
     retVal = value
 
-    if isinstance(retVal, basestring):
+    if retVal and isinstance(retVal, basestring):
         if not (retVal[0] == retVal[-1] == '"'):
             if any(map(lambda x: x in retVal, ['"', ',', '\n'])):
                 retVal = '"%s"' % retVal.replace('"', '""')