# HG changeset patch
# User Matt Harbison <matt_harbison@yahoo.com>
# Date 2018-12-15 18:41:34
# Node ID 9ae4aed27930c5d16a57920391ef3982f2222212
# Parent  e11e03f72baf832f4994447ee2120ac67bd0fb08

windows: ensure mixedfilemodewrapper fd doesn't escape by entering context mgr

Otherwise it seems that the special read and write handling would be bypassed.

diff --git a/mercurial/windows.py b/mercurial/windows.py
--- a/mercurial/windows.py
+++ b/mercurial/windows.py
@@ -70,7 +70,8 @@ class mixedfilemodewrapper(object):
         object.__setattr__(self, r'_lastop', 0)
 
     def __enter__(self):
-        return self._fp.__enter__()
+        self._fp.__enter__()
+        return self
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         self._fp.__exit__(exc_type, exc_val, exc_tb)