# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1574556574 28800
# Node ID 3fd6ec54704c9965b52652af7d2d79c7d7062e8e
# Parent  f1c49bc79b4d88e810080659434627417885b171
locarepo: also fastpath `nullid` lookup in __getitem__

We already use that fastpath for `"null"` and `nullrev`, using it for `nullid`
is similar.

Differential Revision: https://phab.mercurial-scm.org/D7486

diff -r f1c49bc79b4d -r 3fd6ec54704c mercurial/localrepo.py
--- a/mercurial/localrepo.py	Sat Nov 23 13:59:17 2019 +0100
+++ b/mercurial/localrepo.py	Sat Nov 23 16:49:34 2019 -0800
@@ -1531,7 +1531,7 @@
             ]
 
         # dealing with some special values
-        if changeid == b'null' or changeid == nullrev:
+        if changeid == b'null' or changeid == nullrev or changeid == nullid:
             return context.changectx(self, nullrev, nullid, maybe_filtered=False)
         if changeid == b'tip':
             node = self.changelog.tip()