# HG changeset patch
# User Manuel Jacob <me@manueljacob.de>
# Date 1594426399 -7200
# Node ID d085fcb11c56d1070035a467a763d356b18c61d0
# Parent  3e40abe0a170774a8c4cafa156d747de66580b5f
memctx: make `parents()` return list of one element if it’s not a merge

It is part of the contract of `parents()` that non-merges return a list of one
element. `self._parents` is always a list of two elements in `memctx`.

Differential Revision: https://phab.mercurial-scm.org/D8731

diff -r 3e40abe0a170 -r d085fcb11c56 mercurial/context.py
--- a/mercurial/context.py	Sat Jul 11 01:14:00 2020 +0200
+++ b/mercurial/context.py	Sat Jul 11 02:13:19 2020 +0200
@@ -2891,6 +2891,11 @@
 
         return scmutil.status(modified, added, removed, [], [], [], [])
 
+    def parents(self):
+        if self._parents[1].node() == nullid:
+            return [self._parents[0]]
+        return self._parents
+
 
 class memfilectx(committablefilectx):
     """memfilectx represents an in-memory file to commit.