--- jinja2/bccache.py.orig	2011-07-12 14:02:32.000000000 +0200

+++ jinja2/bccache.py	2014-05-30 13:15:12.850410773 +0200

@@ -20,6 +20,9 @@

 import tempfile

 import cPickle as pickle

 import fnmatch

+import os

+import errno

+import stat

 try:

     from hashlib import sha1

 except ImportError:

@@ -194,7 +197,9 @@

     two arguments: The directory where the cache items are stored and a

     pattern string that is used to build the filename.

-    If no directory is specified the system temporary items folder is used.

+    If no directory is specified a default cache directory is selected.  On

+    Windows the user's temp directory is used, on UNIX systems a directory

+    is created for the user in the system temp directory.

     The pattern can be used to have multiple separate caches operate on the

     same directory.  The default pattern is ``'__jinja2_%s.cache'``.  ``%s``

@@ -207,10 +212,39 @@

     def __init__(self, directory=None, pattern='__jinja2_%s.cache'):

         if directory is None:

-            directory = tempfile.gettempdir()

+            directory = self._get_default_cache_dir()

         self.directory = directory

         self.pattern = pattern

+    def _get_default_cache_dir(self):

+        tmpdir = tempfile.gettempdir()

+

+        # On windows the temporary directory is used specific unless

+        # explicitly forced otherwise.  We can just use that.

+        if os.name == 'nt':

+            return tmpdir

+        if not hasattr(os, 'getuid'):

+            raise RuntimeError('Cannot determine safe temp directory.  You '

+                               'need to explicitly provide one.')

+

+        dirname = '_jinja2-cache-%d' % os.getuid()

+        actual_dir = os.path.join(tmpdir, dirname)

+        try:

+            os.mkdir(actual_dir, stat.S_IRWXU) # 0o700

+        except OSError as e:

+            if e.errno != errno.EEXIST:

+                raise

+

+        actual_dir_stat = os.lstat(actual_dir)

+        if actual_dir_stat.st_uid != os.getuid() \

+                or not stat.S_ISDIR(actual_dir_stat.st_mode) \

+                or stat.S_IMODE(actual_dir_stat.st_mode) != stat.S_IRWXU:

+            raise RuntimeError('Temporary directory \'%s\' has an incorrect '

+                              'owner, permissions, or type.' % actual_dir)

+

+

+        return actual_dir

+

     def _get_cache_filename(self, bucket):

         return path.join(self.directory, self.pattern % bucket.key)