--- a/mercurial/cmdutil.py	Wed Jul 11 16:29:23 2018 -0700
+++ b/mercurial/cmdutil.py	Sat Jun 30 12:42:49 2018 +0530
@@ -62,6 +62,11 @@
      _('do not perform actions, just print output')),
 ]
 
+confirmopts = [
+    ('', 'confirm', None,
+     _('ask before applying actions')),
+]
+
 remoteopts = [
     ('e', 'ssh', '',
      _('specify ssh command to use'), _('CMD')),