cannot add file that name include "ド"

[aoyagikouhei]

In Snow Leopard and Leopard Latest Version

bzr version

Bazaar (bzr) 1.18
  Python interpreter: /usr/bin/python 2.6.1
  Python standard library: /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6
  bzrlib: /Users/aoyagikouhei/opt/bzr/lib/python/bzrlib
  Bazaar configuration: /Users/aoyagikouhei/opt/bzr/.bazaar
  Bazaar log file: /Users/aoyagikouhei/opt/bzr/.bzr.log

Copyright 2005, 2006, 2007, 2008, 2009 Canonical Ltd.
http://bazaar-vcs.org/

bzr comes with ABSOLUTELY NO WARRANTY. bzr is free software, and
you may use, modify and redistribute it under the terms of the GNU
General Public License version 2 or later.

$cd src
$bzr init
$vi ド
$bzr add
adding "ド"
$bzr status
unknown:
  ド
$bzr add
adding "ド"
bzr: ERROR: An inconsistent delta was supplied involving u'\u30c9', '-20090909135355-n2hfutp8hnpdkra3-1'
reason: Path already versioned
$bzr status
unknown:
  ド
$bzr commit -m "add"
Committing to: /Users/aoyagikouhei/Documents/aaa/
Traceback (most recent call last):
  File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/logging/__init__.py", line 765, in emit
    self.stream.write(fs % msg.encode("UTF-8"))
  File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/codecs.py", line 351, in write
    data, consumed = self.encode(object, self.errors)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe3 in position 8: ordinal not in range(128)
aborting commit write group: PointlessCommit(No changes to commit)
bzr: ERROR: No changes to commit. Use --unchanged to commit anyhow.