# HG changeset patch
# User mpm@selenic.com
# Date 1118593409 28800
# Node ID e75ea4662d81596cde00006726704a1324c04a69
# Parent  09375250eb31431caca998715e48fc67d3f61cf3
Minor caching improvement for manifest

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Hash: SHA1

Minor caching improvement for manifest

manifest hash: 91d827f4041f1151875a52199618cdd1a219ac79
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diff --git a/mercurial/hg.py b/mercurial/hg.py
--- a/mercurial/hg.py
+++ b/mercurial/hg.py
@@ -97,6 +97,7 @@ class manifest(revlog):
         revlog.__init__(self, opener, "00manifest.i", "00manifest.d")
 
     def read(self, node):
+        if node == nullid: return {} # don't upset local cache
         if self.mapcache and self.mapcache[0] == node:
             return self.mapcache[1].copy()
         text = self.revision(node)
@@ -111,6 +112,7 @@ class manifest(revlog):
         return map
 
     def readflags(self, node):
+        if node == nullid: return {} # don't upset local cache
         if self.mapcache or self.mapcache[0] != node:
             self.read(node)
         return self.mapcache[2]