1 files changed, 6 insertions, 2 deletions

diff --git a/lisp/diff-mode.el b/lisp/diff-mode.el
index 9e9eb81797a..6291453ba17 100644
--- a/lisp/diff-mode.el
+++ b/lisp/diff-mode.el
@@ -1,7 +1,7 @@
 ;;; diff-mode.el --- a mode for viewing/editing context diffs
 
 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007 Free Software Foundation, Inc.
+;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
 ;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
 ;; Keywords: convenience patch diff
@@ -401,9 +401,13 @@ when editing big diffs)."
 (defun diff-end-of-hunk (&optional style)
   ;; Especially important for unified (because headers are ambiguous).
   (setq style (diff-hunk-style style))
+  ;; Some versions of diff replace all-blank context lines in unified
+  ;; format with empty lines. The use of \n below avoids matching such
+  ;; lines as headers.
+  ;; http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01990.html
   (let ((end (and (re-search-forward (case style
                                        ;; A `unified' header is ambiguous.
-                                       (unified (concat "^[^-+# \\]\\|"
+                                       (unified (concat "^[^-+# \\\n]\\|"
                                                         diff-file-header-re))
                                        (context "^[^-+#! \\]")
                                        (normal "^[^<>#\\]")