--- a/rhodecode/lib/vcs/utils/lockfiles.py	Mon Mar 04 12:12:38 2013 +0100
+++ b/rhodecode/lib/vcs/utils/lockfiles.py	Mon Mar 04 12:17:15 2013 +0100
@@ -2,71 +2,71 @@
 
 
 class LockFile(object):
-	"""Provides methods to obtain, check for, and release a file based lock which
-	should be used to handle concurrent access to the same file.
+    """Provides methods to obtain, check for, and release a file based lock which
+    should be used to handle concurrent access to the same file.
 
-	As we are a utility class to be derived from, we only use protected methods.
+    As we are a utility class to be derived from, we only use protected methods.
 
-	Locks will automatically be released on destruction"""
-	__slots__ = ("_file_path", "_owns_lock")
+    Locks will automatically be released on destruction"""
+    __slots__ = ("_file_path", "_owns_lock")
 
-	def __init__(self, file_path):
-		self._file_path = file_path
-		self._owns_lock = False
+    def __init__(self, file_path):
+        self._file_path = file_path
+        self._owns_lock = False
 
-	def __del__(self):
-		self._release_lock()
+    def __del__(self):
+        self._release_lock()
 
-	def _lock_file_path(self):
-		""":return: Path to lockfile"""
-		return "%s.lock" % (self._file_path)
+    def _lock_file_path(self):
+        """:return: Path to lockfile"""
+        return "%s.lock" % (self._file_path)
 
-	def _has_lock(self):
-		""":return: True if we have a lock and if the lockfile still exists
-		:raise AssertionError: if our lock-file does not exist"""
-		if not self._owns_lock:
-			return False
+    def _has_lock(self):
+        """:return: True if we have a lock and if the lockfile still exists
+        :raise AssertionError: if our lock-file does not exist"""
+        if not self._owns_lock:
+            return False
 
-		return True
+        return True
 
-	def _obtain_lock_or_raise(self):
-		"""Create a lock file as flag for other instances, mark our instance as lock-holder
+    def _obtain_lock_or_raise(self):
+        """Create a lock file as flag for other instances, mark our instance as lock-holder
 
-		:raise IOError: if a lock was already present or a lock file could not be written"""
-		if self._has_lock():
-			return
-		lock_file = self._lock_file_path()
-		if os.path.isfile(lock_file):
-			raise IOError("Lock for file %r did already exist, delete %r in case the lock is illegal" % (self._file_path, lock_file))
+        :raise IOError: if a lock was already present or a lock file could not be written"""
+        if self._has_lock():
+            return
+        lock_file = self._lock_file_path()
+        if os.path.isfile(lock_file):
+            raise IOError("Lock for file %r did already exist, delete %r in case the lock is illegal" % (self._file_path, lock_file))
 
-		try:
-			fd = os.open(lock_file, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0)
-			os.close(fd)
-		except OSError,e:
-			raise IOError(str(e))
+        try:
+            fd = os.open(lock_file, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0)
+            os.close(fd)
+        except OSError,e:
+            raise IOError(str(e))
 
-		self._owns_lock = True
+        self._owns_lock = True
 
-	def _obtain_lock(self):
-		"""The default implementation will raise if a lock cannot be obtained.
-		Subclasses may override this method to provide a different implementation"""
-		return self._obtain_lock_or_raise()
+    def _obtain_lock(self):
+        """The default implementation will raise if a lock cannot be obtained.
+        Subclasses may override this method to provide a different implementation"""
+        return self._obtain_lock_or_raise()
 
-	def _release_lock(self):
-		"""Release our lock if we have one"""
-		if not self._has_lock():
-			return
+    def _release_lock(self):
+        """Release our lock if we have one"""
+        if not self._has_lock():
+            return
 
-		# if someone removed our file beforhand, lets just flag this issue
-		# instead of failing, to make it more usable.
-		lfp = self._lock_file_path()
-		try:
-			# on bloody windows, the file needs write permissions to be removable.
-			# Why ...
-			if os.name == 'nt':
-				os.chmod(lfp, 0777)
-			# END handle win32
-			os.remove(lfp)
-		except OSError:
-			pass
-		self._owns_lock = False
+        # if someone removed our file beforhand, lets just flag this issue
+        # instead of failing, to make it more usable.
+        lfp = self._lock_file_path()
+        try:
+            # on bloody windows, the file needs write permissions to be removable.
+            # Why ...
+            if os.name == 'nt':
+                os.chmod(lfp, 0777)
+            # END handle win32
+            os.remove(lfp)
+        except OSError:
+            pass
+        self._owns_lock = False