# HG changeset patch
# User Augie Fackler <augie@google.com>
# Date 2018-04-14 03:55:37
# Node ID 73d0a3dd7e53e6c515b48a83854163b447ab0497
# Parent  affcecf20c15d9f15bf3993df0db5b2552310e24

stringutil: teach pprint how to format None

Differential Revision: https://phab.mercurial-scm.org/D3358

diff --git a/mercurial/utils/stringutil.py b/mercurial/utils/stringutil.py
--- a/mercurial/utils/stringutil.py
+++ b/mercurial/utils/stringutil.py
@@ -42,6 +42,8 @@ def pprint(o):
         return '%d' % o
     elif isinstance(o, float):
         return '%f' % o
+    elif o is None:
+        return b'None'
     else:
         raise error.ProgrammingError('do not know how to format %r' % o)