# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 2014-09-17 13:34:34
# Node ID 0a714a1f7d5c0d754e4c566a4372e391144854f8
# Parent  b9f7f3eeb99c206897beacc0eb323ab9c178e599

formatter: convert None to json null

It will be used by "annotate" command to represent the workingctx revision.

diff --git a/mercurial/formatter.py b/mercurial/formatter.py
--- a/mercurial/formatter.py
+++ b/mercurial/formatter.py
@@ -98,6 +98,8 @@ class pickleformatter(baseformatter):
 def _jsonifyobj(v):
     if isinstance(v, tuple):
         return '[' + ', '.join(_jsonifyobj(e) for e in v) + ']'
+    elif v is None:
+        return 'null'
     elif v is True:
         return 'true'
     elif v is False: