Fix bug #8047 with require-final-newline and image file display.

 image-mode.el (image-toggle-display-image): Disable
 require-final-newline in buffers visiting binary image files.

lisp/ChangeLog

 2011-02-18  Eli Zaretskii  <eliz@gnu.org>
 
+	* image-mode.el (image-toggle-display-image): Disable
+	require-final-newline in buffers visiting binary image files.
+	(Bug#8047)
+
 	* international/mule-cmds.el (read-char-by-name, ucs-insert):
 	Document completion with asterisk and a substring.
 

lisp/image-mode.el

@@ -507,6 +507,11 @@ was inserted."
     ;; This just makes the arrow displayed in the right fringe
     ;; area look correct when the image is wider than the window.
     (setq truncate-lines t)
+    ;; Disable adding a newline at the end of the image file when it
+    ;; is written with, e.g., C-x C-w.
+    (if (coding-system-equal (coding-system-base buffer-file-coding-system)
+			     'no-conversion)
+	(set (make-local-variable 'require-final-newline) nil))
     ;; Allow navigation of large images
     (set (make-local-variable 'auto-hscroll-mode) nil)
     (setq image-type type)