--- a/mercurial/patch.py	Fri Nov 04 10:18:40 2011 +0100
+++ b/mercurial/patch.py	Wed Nov 30 17:15:39 2011 -0600
@@ -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 '+-':