UnicodeDecodeError: 'ascii' codec can't decode byte 0xb4 in position 25: ordinal not in range(128)

[fai.Tsang]

How to Reproduce

While doing a GET operation on /browser/HomeModel, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'path': u'/HomeModel', 'rev': u'36:a2134d171627'}

User Agent was: Mozilla/5.0 (Windows; U; Windows NT 6.0; zh-CN; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5 (.NET CLR 3.5.30729)

System Information

Trac	0.11.2.1
Python	2.5.2 (r252:60911, Dec 2 2008, 11:31:30) [GCC 4.1.2 (Gentoo 4.1.2 p1.0.2)]
setuptools	0.6c6
psycopg2	2.0.8
Genshi	0.5.1
Mercurial	1.0.2
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/usr/lib64/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/web/main.py", line 432, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib64/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/web/main.py", line 204, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib64/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/versioncontrol/web_ui/browser.py", line 360, in process_request
    'dir': node.isdir and self._render_dir(req, repos, node, rev),
  File "/usr/lib64/python2.5/site-packages/Trac-0.11.2.1-py2.5.egg/trac/versioncontrol/web_ui/browser.py", line 406, in _render_dir
    entries = [entry(n) for n in node.get_entries()]
  File "/usr/lib64/python2.5/site-packages/TracMercurial-0.11.0.7-py2.5.egg/tracext/hg/backend.py", line 688, in get_entries
    dirnodes = self.findnode((n_rev > node_rev) and node_rev or n_rev, dirnames)
  File "/usr/lib64/python2.5/site-packages/TracMercurial-0.11.0.7-py2.5.egg/tracext/hg/backend.py", line 596, in findnode
    if f.startswith(d):
UnicodeDecodeError: 'ascii' codec can't decode byte 0xb4 in position 25: ordinal not in range(128)

[cboos]

Duplicate of #7799.

[cboos]

Rather #7160.