Grr, splittag was also missing from __all__.
diff --git a/Lib/urllib.py b/Lib/urllib.py
index 085bb33..7f32428 100644
--- a/Lib/urllib.py
+++ b/Lib/urllib.py
@@ -30,7 +30,7 @@
 
 __all__ = ["urlopen", "URLopener", "FancyURLopener", "urlretrieve",
            "urlcleanup", "quote", "quote_plus", "unquote", "unquote_plus",
-           "urlencode", "url2pathname", "pathname2url"]
+           "urlencode", "url2pathname", "pathname2url", "splittag"]
 
 __version__ = '1.15'    # XXX This version is not always updated :-(