hg convert -s svn http://... repo with password authentication (win)

[Stanimir Stamenkov]

I'm trying to use the hg convert extension on Windows to convert a 
Subversion repository to Mercurial with no luck so far.  I'm trying 
using both the 1.3.1 binary from <http://mercurial.berkwood.com/> 
and the one bundled with TortoiseHG 0.8.1.  The problem seems caused 
by the SVN repo being password protected, as trying with some 
examples seen on the Web worked fine.  I'm issuing the following 
command (given example URLs, as I can't reveal the real ones):

hg convert -s svn http://svn.example.com/module/trunk

and I get the following output followed by prompt:

assuming destination trunk-hg
initializing destination trunk-hg repository
Enter username for Subversion at svn.example.com:

I enter my user name and press Enter, then I get prompt:

  in Subversion at svn.example.com:

Entering whatever causes the user name prompt to reappear.  If I try 
the following command instead:

hg convert -s svn http://uname:passw@svn.example/module/trunk

I get the following:

assuming destination trunk-hg
initializing destination trunk-hg repository
** unknown exception encountered, details follow
** report bug details to http://mercurial.selenic.com/bts/
** or mercurial at selenic.com
** Mercurial Distributed SCM (version 1.3.1)
** Extensions loaded: win32text, convert
Traceback (most recent call last):
   File "hg", line 27, in <module>
   File "mercurial\dispatch.pyc", line 16, in run
   File "mercurial\dispatch.pyc", line 27, in dispatch
   File "mercurial\dispatch.pyc", line 43, in _runcatch
   File "mercurial\dispatch.pyc", line 449, in _dispatch
   File "mercurial\dispatch.pyc", line 317, in runcommand
   File "mercurial\dispatch.pyc", line 501, in _runcommand
   File "mercurial\dispatch.pyc", line 454, in checkargs
   File "mercurial\dispatch.pyc", line 448, in <lambda>
   File "mercurial\util.pyc", line 402, in check
   File "hgext\convert\__init__.pyc", line 232, in convert
   File "hgext\convert\convcmd.pyc", line 369, in convert
   File "hgext\convert\convcmd.pyc", line 54, in convertsource
   File "hgext\convert\subversion.pyc", line 189, in __init__
   File "hgext\convert\subversion.pyc", line 163, in issvnurl
   File "hgext\convert\subversion.pyc", line 147, in httpcheck
   File "urllib.pyc", line 82, in urlopen
   File "urllib.pyc", line 190, in open
   File "urllib.pyc", line 314, in open_http
   File "httplib.pyc", line 1159, in __init__
   File "httplib.pyc", line 639, in __init__
   File "httplib.pyc", line 651, in _set_hostport
httplib.InvalidURL: nonnumeric port: ''

Am I missing something, or may be doing it wrong?

-- 
Stanimir