diff -r a7fa5bd1c914 -r bf9894889d82 mercurial/store.py
--- a/mercurial/store.py	Tue Sep 18 17:00:58 2012 +0200
+++ b/mercurial/store.py	Mon Sep 17 11:00:38 2012 +0200
@@ -336,7 +336,7 @@
             # skip nonexistent file
             self.entries = set()
             return
-        self.entries = set(map(decodedir, fp.read().splitlines()))
+        self.entries = set(decodedir(fp.read()).splitlines())
         if '' in self.entries:
             fp.seek(0)
             for n, line in enumerate(fp):