From c2ed55c8505d5a6e404bca99fbbcf587805e6611 Mon Sep 17 00:00:00 2001
From: Jyrki Pulliainen <jyrki.pulliainen@inoi.fi>
Date: Fri, 3 Jul 2009 22:25:01 +0100
Subject: [PATCH] copyonwrite: Fix write mode detection for binary files.

Due to this bug, copyonwrite path was not correctly unbound on binary
files.
---
 filesystem/copyonwrite.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/filesystem/copyonwrite.py b/filesystem/copyonwrite.py
index 0032a02..7e8d064 100644
--- a/filesystem/copyonwrite.py
+++ b/filesystem/copyonwrite.py
@@ -14,7 +14,7 @@ def __init__(self, bind=None, **kwargs):
             self._bound = getattr(kwargs.get('parent',''), '_bind', None)
     
     def open(self, mode='r', *moreargs, **kwargs):
-        if mode == 'w':
+        if 'w' in mode:
             self.unbind()
         ## TODO: we don't have test code for this yet
         #elif mode == 'r+':