# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 1151527773 18000
# Node ID c35694df7b13353e2cb6f6ff5162abdd368ba517
# Parent  b73552a00b209c8fcd71fd23fb990c5d05910010
revlog: handle integer arguments to lookup

diff --git a/mercurial/revlog.py b/mercurial/revlog.py
--- a/mercurial/revlog.py
+++ b/mercurial/revlog.py
@@ -743,6 +743,11 @@ class revlog(object):
 
     def lookup(self, id):
         """locate a node based on revision number or subset of hex nodeid"""
+        if type(id) == type(0):
+            rev = id
+            if rev < 0: rev = self.count() + rev
+            if rev < 0 or rev >= self.count(): return None
+            return self.node(rev)
         try:
             rev = int(id)
             if str(rev) != id: raise ValueError