diff -r e9aadee698cf -r 2f859ad7ed8c mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Wed Mar 28 13:30:24 2018 -0700
+++ b/mercurial/debugcommands.py	Wed Mar 28 14:52:57 2018 -0700
@@ -2969,7 +2969,7 @@
                               stringutil.escapedata(output))
             else:
                 res = peer._call(command, **pycompat.strkwargs(args))
-                ui.status(_('response: %s\n') % stringutil.escapedata(res))
+                ui.status(_('response: %s\n') % stringutil.pprint(res))
 
         elif action == 'batchbegin':
             if batchedcommands is not None: