# HG changeset patch
# User Matt Harbison <matt_harbison@yahoo.com>
# Date 2015-06-03 17:51:27
# Node ID 95c271356a66d0e607c4d938d65077858703cf21
# Parent  c4a92867c048b725ada6f5f38ae88c27515297dc

context: introduce the nullsub() method

Ultimately, this will be used by scmutil.  The subrepo module already imports
it, so it can't import the subrepo module to access the underlying method.

diff --git a/mercurial/context.py b/mercurial/context.py
--- a/mercurial/context.py
+++ b/mercurial/context.py
@@ -251,6 +251,9 @@ class basectx(object):
     def sub(self, path):
         return subrepo.subrepo(self, path)
 
+    def nullsub(self, path, pctx):
+        return subrepo.nullsubrepo(self, path, pctx)
+
     def match(self, pats=[], include=None, exclude=None, default='glob',
               listsubrepos=False):
         r = self._repo