在尝试在位于 TrueCrypt 分区上的项目上使用 Mercurial 时，我总是收到如下错误：
** unknown exception encountered, details follow
** report bug details to http://mercurial.selenic.com/bts/
** or mercurial@selenic.com
** Mercurial Distributed SCM (version 1.5.2+20100502)
** Extensions loaded:
Traceback (most recent call last):
File "/usr/local/bin/hg", line 27, in <module>
mercurial.dispatch.run()
File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 16, in run
sys.exit(dispatch(sys.argv[1:]))
File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 30, in dispatch
return _runcatch(u, args)
File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 50, in _runcatch
return _dispatch(ui, args)
File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 470, in _dispatch
return runcommand(lui, repo, cmd, fullargs, ui, options, d)
File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 340, in runcommand
ret = _runcommand(ui, options, cmd, d)
File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 521, in _runcommand
return checkargs()
File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 475, in checkargs
return cmdfunc()
File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 469, in <lambda>
d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
File "/Library/Python/2.6/site-packages/mercurial/util.py", line 401, in check
return func(*args, **kwargs)
File "/Library/Python/2.6/site-packages/mercurial/commands.py", line 3332, in update
return hg.update(repo, rev)
File "/Library/Python/2.6/site-packages/mercurial/hg.py", line 362, in update
stats = _merge.update(repo, node, False, False, None)
File "/Library/Python/2.6/site-packages/mercurial/merge.py", line 495, in update
_checkunknown(wc, p2)
File "/Library/Python/2.6/site-packages/mercurial/merge.py", line 77, in _checkunknown
for f in wctx.unknown():
File "/Library/Python/2.6/site-packages/mercurial/context.py", line 660, in unknown
return self._status[4]
File "/Library/Python/2.6/site-packages/mercurial/util.py", line 156, in __get__
result = self.func(obj)
File "/Library/Python/2.6/site-packages/mercurial/context.py", line 622, in _status
return self._repo.status(unknown=True)
File "/Library/Python/2.6/site-packages/mercurial/localrepo.py", line 1023, in status
if (f not in ctx1 or ctx2.flags(f) != ctx1.flags(f)
File "/Library/Python/2.6/site-packages/mercurial/context.py", line 694, in flags
flag = findflag(self._parents[0])
File "/Library/Python/2.6/site-packages/mercurial/context.py", line 690, in findflag
return ff(path)
File "/Library/Python/2.6/site-packages/mercurial/dirstate.py", line 145, in f
if 'x' in fallback(x):
TypeError: argument of type 'NoneType' is not iterable
值得一提的是，如果项目不在 TrueCrypt 分区上，Mercurial 可以完美运行。
配置：MacOS X 10.6.3 Mercurial分布式单片机（版本1.5.2+20100502）Python 2.6.5
你们当中有没有慷慨的人可以帮助我？:)