diff -r dafcc96c1285 -r ab39d1813e51 mercurial/patch.py
--- a/mercurial/patch.py	Thu Jan 08 14:26:30 2009 +0100
+++ b/mercurial/patch.py	Fri Jan 09 01:36:35 2009 +0100
@@ -1338,8 +1338,6 @@
 
         for chunk in diff(repo, prev, node, opts=opts):
             fp.write(chunk)
-        if fp not in (sys.stdout, repo.ui):
-            fp.close()
 
     for seqno, rev in enumerate(revs):
         single(rev, seqno+1, fp)