### What steps will reproduce the problem?
[[!format sh """
C:\Users\Bruno>mkdir annex

C:\Users\Bruno>cd annex

C:\Users\Bruno\annex>git init
Initialized empty Git repository in C:/Users/Bruno/annex/.git/

C:\Users\Bruno\annex>git annex init
init
  Detected a crippled filesystem.

  Enabling direct mode.

  Detected a filesystem without fifo support.

  Disabling ssh connection caching.
ok
(Recording state in git...)

C:\Users\Bruno\annex>echo test > test

C:\Users\Bruno\annex>git annex add .
add test (checksum...) ok
(Recording state in git...)

C:\Users\Bruno\annex>git commit -a -m added
[master (root-commit) 2eea610] added
 1 file changed, 1 insertion(+)
 create mode 120000 test

C:\Users\Bruno\annex>git annex sync
(Recording state in git...)
fatal: unable to access '../../../../C:\Users\Bruno\annex\.git/config': Invalid argument

git-annex: user error (xargs ["-0","git","--git-dir=C:\\Users\\Bruno\\annex\\.git","--work-tree=C:\\Users\\Bruno\\annex","add","-f"] exited 123)
failed
git-annex: sync: 1 failed
"""]]

### What version of git-annex are you using? On what operating system?
Windows 8 (64 bits)

git version 1.8.4.msysgit.0

[[!format sh """
git-annex version: 4.20131008-ge115441
build flags: Pairing Testsuite S3 WebDAV DNS Feeds Quvi TDFA CryptoHash
key/value backends: SHA256E SHA1E SHA512E SHA224E SHA384E SKEIN256E SKEIN512E SHA256 SHA1 SHA512 SHA224 SHA384 SKEIN256 SKEIN512 WORM URL
remote types: git gcrypt S3 bup directory rsync web webdav glacier hook
local repository version: 4
default repository version: 3
supported repository versions: 3 4
upgrade supported from repository versions: 2
"""]]

### Please provide any additional information below.
C:\Users\Bruno\annex\.git\config exists

> xargs was one problem; also msysgit seems to just not
> accept DOS style paths anymore in --git-dir or --git-work-tree.
> megaweird. [[fixed|done]] --[[Joey]]
