diff -r 6c5e6ebe0812 -r 3da1f60fc80d mercurial/patch.py
--- a/mercurial/patch.py	Thu Nov 24 17:54:50 2011 +0900
+++ b/mercurial/patch.py	Tue Nov 29 19:51:35 2011 +0100
@@ -1639,7 +1639,7 @@
                 if line.startswith('@'):
                     head = False
             else:
-                if line and not line[0] in ' +-@':
+                if line and not line[0] in ' +-@\\':
                     head = True
             stripline = line
             if not head and line and line[0] in '+-':