# HG changeset patch
# User Alexis S. L. Carvalho <alexis@cecm.usp.br>
# Date 1156457996 25200
# Node ID 47aad3489da862c0588c9640e46e670b641a0c4f
# Parent  2b255c3478dce14ae0d1d36a939e3e50827fa001
Fixed an exception in notify extension (b2a_hex argument incorrect)
Detailed messages was - incoming.notify hook raised an exception: b2a_hex() argument 1 must be string or read-only character buffer, not stringio

diff --git a/hgext/notify.py b/hgext/notify.py
--- a/hgext/notify.py
+++ b/hgext/notify.py
@@ -238,7 +238,7 @@ class notifier(object):
             return
         fp = templater.stringio()
         prev = self.repo.changelog.parents(node)[0]
-        patch.diff(self.repo, fp, prev, ref)
+        patch.diff(self.repo, prev, ref, fp=fp)
         difflines = fp.getvalue().splitlines(1)
         if maxdiff > 0 and len(difflines) > maxdiff:
             self.sio.write(_('\ndiffs (truncated from %d to %d lines):\n\n') %