--- a/mercurial/utils/stringutil.py	Thu May 10 21:00:58 2018 +0900
+++ b/mercurial/utils/stringutil.py	Thu May 10 21:08:32 2018 +0900
@@ -23,7 +23,7 @@
     pycompat,
 )
 
-def pprint(o, bprefix=True):
+def pprint(o, bprefix=False):
     """Pretty print an object."""
     if isinstance(o, bytes):
         if bprefix: