# HG changeset patch
# User Kevin Bullock <kbullock@ringworld.org>
# Date 1508514713 18000
# Node ID 4dddc56c4c4b420c91d4a9b20e8f9589953b3fde
# Parent  5334581e231a5167d03689ff47b3a6fdf082011c
Use @registrar.command where available (hg 3.7+).

diff -r 5334581e231a -r 4dddc56c4c4b prompt.py
--- a/prompt.py	Wed Oct 05 20:52:29 2016 +0000
+++ b/prompt.py	Fri Oct 20 10:51:53 2017 -0500
@@ -20,8 +20,13 @@
 from mercurial.i18n import _
 from mercurial.node import hex, short
 
+# command registration moved into `registrar` module in v3.7.
 cmdtable = {}
-command = cmdutil.command(cmdtable)
+try:
+    from mercurial import registrar
+    command = registrar.command(cmdtable)
+except ImportError:
+    command = cmdutil.command(cmdtable)
 
 # `revrange' has been moved into module `scmutil' since v1.9.
 try :