From 512b41cc9c23c5735452f456041105ad6d17ed32 Mon Sep 17 00:00:00 2001
From: Federico Di Gregorio <fog@initd.org>
Date: Thu, 20 Oct 2011 09:52:22 +0200
Subject: [PATCH] Fix encoding when Zope explicitly pass empty "enc" argument

---
 ZPsycopgDA/db.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ZPsycopgDA/db.py b/ZPsycopgDA/db.py
index 2f7040d4..fe27931c 100644
--- a/ZPsycopgDA/db.py
+++ b/ZPsycopgDA/db.py
@@ -39,7 +39,10 @@ class DB(TM, dbi_db.DB):
         self.dsn = dsn
         self.tilevel = tilevel
         self.typecasts = typecasts
-        self.encoding = enc
+        if enc is None or enc == "":
+            self.encoding = "utf-8"
+        else:
+            self.encoding = enc
         self.failures = 0
         self.calls = 0
         self.make_mappings()