# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 1414870136 18000
# Node ID a05cdc1579df62120e716c6e9113458f568f0ff3
# Parent  7ba67c1f1f92e8cb5c159afb80e584b5e197ea16
context: handle tip+1 breakage in pre-3.2 default branch

Asking for rev(tip+1) could give a null changeset, which broke tests.

diff -r 7ba67c1f1f92 -r a05cdc1579df hglib/context.py
--- a/hglib/context.py	Sat Nov 01 14:26:18 2014 -0500
+++ b/hglib/context.py	Sat Nov 01 14:28:56 2014 -0500
@@ -23,6 +23,10 @@
             notfound = False
             try:
                 cset = self._repo.log(changeid)
+                # hg bbf4f3dfd700 gave a null result for tip+1
+                if (cset and cset[0][1] == _nullcset[1]
+                    and cset[0][0] != _nullcset[0]):
+                    notfound = True
             except CommandError:
                 notfound = True