Merged revisions 86520 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r86520 | senthil.kumaran | 2010-11-18 23:36:41 +0800 (Thu, 18 Nov 2010) | 3 lines

  Fix Issue2244 - urllib unquotes user and password info multiple times - Patch by Theodore Turocy
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diff --git a/Lib/urllib.py b/Lib/urllib.py
index 9c58923..d85dedb 100644
--- a/Lib/urllib.py
+++ b/Lib/urllib.py
@@ -511,8 +511,8 @@
         if user: user, passwd = splitpasswd(user)
         else: passwd = None
         host = unquote(host)
-        user = unquote(user or '')
-        passwd = unquote(passwd or '')
+        user = user or ''
+        passwd = passwd or ''
         host = socket.gethostbyname(host)
         if not port:
             import ftplib
@@ -1064,7 +1064,7 @@
         _userprog = re.compile('^(.*)@(.*)$')
 
     match = _userprog.match(host)
-    if match: return map(unquote, match.group(1, 2))
+    if match: return match.group(1, 2)
     return None, host
 
 _passwdprog = None