From 8f667be2aca7d903a82344490045dff4110f68d7 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Thu, 17 May 2012 18:14:58 +0200
Subject: [PATCH] python: fix Message.get_header

8dc8495010057202b725ac029831c03f4e3ab6bd introduced a bug, if the
requested header is not set the underlying notmuch function returns an
empty string that also made the expression true resulting in an
exception being raised. Partly revert the commit to fix this
issue. Testing for equality with None is correct in this case since
the restype of the function Message._get_header is c_char_p so NULL
pointers are in fact converted to None in this case.

Signed-off-by: Justus Winter <4winter@informatik.uni-hamburg.de>
---
 bindings/python/notmuch/message.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bindings/python/notmuch/message.py b/bindings/python/notmuch/message.py
index d7f029f8..d1c1b58c 100644
--- a/bindings/python/notmuch/message.py
+++ b/bindings/python/notmuch/message.py
@@ -229,7 +229,7 @@ class Message(Python3StringMixIn):
 
         #Returns NULL if any error occurs.
         header = Message._get_header(self._msg, _str(header))
-        if not header:
+        if header == None:
             raise NullPointerError()
         return header.decode('UTF-8', 'ignore')
 
-- 
2.43.0