Comment 5 for bug 523746

I can reproduce this bug without qbzr.

C:\test2>bzr --no-plugins diff --using=C:\\usr\\WinMerge\\WinMergeU.exe
=== modified file '縺ゅ＞縺・
bzr: ERROR: exceptions.UnicodeEncodeError: 'ascii' codec can't encode characters in position 84-86: ordinal not in range
(128)

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 853, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1055, in run_bzr
  File "bzrlib\commands.pyo", line 661, in run_argv_aliases
  File "bzrlib\commands.pyo", line 665, in run_direct
  File "bzrlib\cleanup.pyo", line 122, in run_simple
  File "bzrlib\cleanup.pyo", line 156, in _do_with_cleanups
  File "bzrlib\commands.pyo", line 1070, in ignore_pipe
  File "bzrlib\builtins.pyo", line 1955, in run
  File "bzrlib\diff.pyo", line 444, in show_diff_trees
  File "bzrlib\diff.pyo", line 889, in show_diff
  File "bzrlib\diff.pyo", line 949, in _show_diff
  File "bzrlib\diff.pyo", line 975, in _diff
  File "bzrlib\diff.pyo", line 506, in _diff_many
  File "bzrlib\diff.pyo", line 782, in diff
  File "bzrlib\diff.pyo", line 708, in _execute
  File "subprocess.pyo", line 594, in __init__
  File "subprocess.pyo", line 822, in _execute_child
UnicodeEncodeError: 'ascii' codec can't encode characters in position 84-86: ordinal not in range(128)

bzr 2.1.0 on python 2.5.4 (Windows-XP-5.1.2600-SP3)
arguments: ['bzr', '--no-plugins', 'diff', '--using=C:\\\\usr\\\\WinMerge\\\\WinMergeU.exe']
encoding: 'cp932', fsenc: 'mbcs', lang: 'ja'
plugins:

*** Bazaar has encountered an internal error. This probably indicates a
    bug in Bazaar. You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    including this traceback and a description of the problem.