# HG changeset patch
# User Bryan O'Sullivan <bryano@fb.com>
# Date 2016-01-13 00:16:19
# Node ID 5ef99738a56200badce6ad240449cf806b0c2d3e
# Parent  ddfb8887212d1e50cf8b101f8a68c0a3beb1cb90

util: replace file I/O with readfile

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -756,10 +756,7 @@ def tempfilter(s, cmd):
         if code:
             raise Abort(_("command '%s' failed: %s") %
                         (cmd, explainexit(code)))
-        fp = open(outname, 'rb')
-        r = fp.read()
-        fp.close()
-        return r
+        return readfile(outname)
     finally:
         try:
             if inname: