Index: /trunk/twisted/topfiles/4503.bugfix
===================================================================
--- /trunk/twisted/topfiles/4503.bugfix	(revision 29852)
+++ /trunk/twisted/topfiles/4503.bugfix	(revision 29852)
@@ -0,0 +1,1 @@
+twisted.words.xish.domish now correctly parses XML with namespaces which include whitespace.
Index: /trunk/twisted/words/test/test_domish.py
===================================================================
--- /trunk/twisted/words/test/test_domish.py	(revision 25184)
+++ /trunk/twisted/words/test/test_domish.py	(revision 29852)
@@ -1,3 +1,3 @@
-# Copyright (c) 2001-2008 Twisted Matrix Laboratories.
+# Copyright (c) 2001-2010 Twisted Matrix Laboratories.
 # See LICENSE for details.
 
@@ -199,4 +199,17 @@
         self.assertEquals(self.elements[0].child2.uri, '')
 
+
+    def test_namespaceWithWhitespace(self):
+        """
+        Whitespace in an xmlns value is preserved in the resulting node's C{uri}
+        attribute.
+        """
+        xml = "<root xmlns:foo=' bar baz '><foo:bar foo:baz='quux'/></root>"
+        self.stream.parse(xml)
+        self.assertEquals(self.elements[0].uri, " bar baz ")
+        self.assertEquals(
+            self.elements[0].attributes, {(" bar baz ", "baz"): "quux"})
+
+
     def testChildPrefix(self):
         xml = "<root xmlns='testns' xmlns:foo='testns2'><foo:child/></root>"
Index: /trunk/twisted/words/xish/domish.py
===================================================================
--- /trunk/twisted/words/xish/domish.py	(revision 25184)
+++ /trunk/twisted/words/xish/domish.py	(revision 29852)
@@ -1,5 +1,4 @@
 # -*- test-case-name: twisted.words.test.test_domish -*-
-#
-# Copyright (c) 2001-2007 Twisted Matrix Laboratories.
+# Copyright (c) 2001-2010 Twisted Matrix Laboratories.
 # See LICENSE for details.
 
@@ -72,5 +71,4 @@
 
         # Further optimizations
-        parent = elem.parent
         name = elem.name
         uri = elem.uri
@@ -759,6 +757,8 @@
 
     def _onStartElement(self, name, attrs):
-        # Generate a qname tuple from the provided name
-        qname = name.split(" ")
+        # Generate a qname tuple from the provided name.  See
+        # http://docs.python.org/library/pyexpat.html#xml.parsers.expat.ParserCreate
+        # for an explanation of the formatting of name.
+        qname = name.rsplit(" ", 1)
         if len(qname) == 1:
             qname = ('', name)
@@ -766,6 +766,6 @@
         # Process attributes
         for k, v in attrs.items():
-            if k.find(" ") != -1:
-                aqname = k.split(" ")
+            if " " in k:
+                aqname = k.rsplit(" ", 1)
                 attrs[(aqname[0], aqname[1])] = v
                 del attrs[k]