SVG tags and missing namespace prefixes breaks BeautifulSoup when using htm5lib..

[Roger Hu]

Stack error if prefix is None (which can happen with this SVG tag:

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">

diff --git a/bs4/element.py b/bs4/element.py
index 4a4d3ed..3058d5e 100644
--- a/bs4/element.py
+++ b/bs4/element.py
@@ -26,6 +26,8 @@ class NamespacedAttribute(unicode):
     def __new__(cls, prefix, name, namespace=None):
         if name is None:
             obj = unicode.__new__(cls, prefix)
+ elif prefix is None and name:
+ obj = unicode.__new__(cls, name)
         else:
             obj = unicode.__new__(cls, prefix + ":" + name)
         obj.prefix = prefix
diff --git a/bs4/tests/test_html5lib.py b/bs4/tests/test_html5lib.py
index f195f7d..b2a9f48 100644
--- a/bs4/tests/test_html5lib.py
+++ b/bs4/tests/test_html5lib.py
@@ -56,3 +56,8 @@ class HTML5LibBuilderSmokeTest(SoupTest, HTML5TreeBuilderSmokeTest):
             "<table><thead><tr><td>Foo</td></tr></thead>"
             "<tbody><tr><td>Bar</td></tr></tbody>"
             "<tfoot><tr><td>Baz</td></tr></tfoot></table>")
+
+ def test_prefixed_namespaces(self):
+ soup = self.soup('<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">')
+ self.assertEqual("svg", soup.find(attrs={"xmlns" : "http://www.w3.org/2000/svg"}).name)
+ self.assertEqual("svg", soup.find(attrs={"xmlns:xlink" : "http://www.w3.org/1999/xlink"}).name)

[Leonard Richardson (leonardr)]

There is similar code in 4.1.2.