# HG changeset patch
# User cmlenz
# Date 1153757118 0
# Node ID 5e9987f34e6c3e1e125baeac3101f71b8d4a31db
# Parent  04c8ed3c43ff1e5a5ea98adb583c9adeaebacab4
Ported [111] to trunk.

diff --git a/markup/core.py b/markup/core.py
--- a/markup/core.py
+++ b/markup/core.py
@@ -440,11 +440,11 @@
     __slots__ = ['namespace', 'localname']
 
     def __new__(cls, qname):
-        if isinstance(qname, QName):
+        if type(qname) is cls:
             return qname
 
         parts = qname.split(u'}', 1)
-        if qname.find(u'}') > 0:
+        if len(parts) > 1:
             self = unicode.__new__(cls, u'{' + qname)
             self.namespace = unicode(parts[0])
             self.localname = unicode(parts[1])