From eaedb9320c7aad581daa05f1510b64393c082dbb Mon Sep 17 00:00:00 2001
From: Nick Pope <nick.pope@flightdataservices.com>
Date: Thu, 19 Apr 2018 14:11:05 +0100
Subject: [PATCH] Fix index example for TaggedJSONSerializer.register()

Made the example use a keyword, rather than a positional argument, as
the intent here is to show how to insert a tag with higher precedence.
As a positional argument, this would have been passed to ``force``
instead of ``index``.
---
 flask/json/tag.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flask/json/tag.py b/flask/json/tag.py
index 2ff0cc6e..11c966c5 100644
--- a/flask/json/tag.py
+++ b/flask/json/tag.py
@@ -36,7 +36,7 @@ processes dicts first, so insert the new tag at the front of the order since
         def to_python(self, value):
             return OrderedDict(value)
 
-    app.session_interface.serializer.register(TagOrderedDict, 0)
+    app.session_interface.serializer.register(TagOrderedDict, index=0)
 
 :copyright: © 2010 by the Pallets team.
 :license: BSD, see LICENSE for more details.