--- a/lisp/ediff/ediff-diff.el	Mon Aug 13 08:47:56 2007 +0200
+++ b/lisp/ediff/ediff-diff.el	Mon Aug 13 08:48:16 2007 +0200
@@ -140,31 +140,45 @@
 ;; Run the diff program on FILE1 and FILE2 and put the output in DIFF-BUFFER
 ;; Return the size of DIFF-BUFFER
 (defun ediff-make-diff2-buffer (diff-buffer file1 file2)
-  (cond ((< (ediff-file-size file1) 0)
-	 (message "Can't diff remote files: %s"
-		  (ediff-abbreviate-file-name file1))
-	 (sit-for 2)
-	 ;; 1 is an error exit code
-	 1)
-	((< (ediff-file-size file2) 0)
-	 (message "Can't diff remote file: %s"
-		  (ediff-abbreviate-file-name file2))
-	 (sit-for 2)
-	 (message "")
-	 ;; 1 is an error exit code
-	 1)
-	(t (message "Computing differences between %s and %s ..."
-		    (file-name-nondirectory file1)
-		    (file-name-nondirectory file2))
-	   ;; this erases the diff buffer automatically
-	   (ediff-exec-process ediff-diff-program
-			       diff-buffer
-			       'synchronize
-			       ediff-diff-options file1 file2)
-	   ;;(message "Computing differences ... done")
+  (let ((file1-size (ediff-file-size file1))
+	(file2-size (ediff-file-size file2)))
+    (cond ((not (numberp file1-size))
+	   (message "Can't find file: %s"
+		    (ediff-abbreviate-file-name file1))
+	   (sit-for 2)
+	   ;; 1 is an error exit code
+	   1)
+	  ((not (numberp file2-size))
+	   (message "Can't find file: %s"
+		    (ediff-abbreviate-file-name file2))
+	   (sit-for 2)
+	   ;; 1 is an error exit code
+	   1)
+	  ((< file1-size 0)
+	   (message "Can't diff remote files: %s"
+		    (ediff-abbreviate-file-name file1))
+	   (sit-for 2)
+	   ;; 1 is an error exit code
+	   1)
+	  ((< file2-size 0)
+	   (message "Can't diff remote file: %s"
+		    (ediff-abbreviate-file-name file2))
+	   (sit-for 2)
 	   (message "")
-	   (ediff-eval-in-buffer diff-buffer
-	     (buffer-size)))))
+	   ;; 1 is an error exit code
+	   1)
+	  (t (message "Computing differences between %s and %s ..."
+		      (file-name-nondirectory file1)
+		      (file-name-nondirectory file2))
+	     ;; this erases the diff buffer automatically
+	     (ediff-exec-process ediff-diff-program
+				 diff-buffer
+				 'synchronize
+				 ediff-diff-options file1 file2)
+	     ;;(message "Computing differences ... done")
+	     (message "")
+	     (ediff-eval-in-buffer diff-buffer
+	       (buffer-size))))))
   
 
      
@@ -1187,6 +1201,7 @@
 ;;; Local Variables:
 ;;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
 ;;; eval: (put 'ediff-eval-in-buffer 'lisp-indent-hook 1)
+;;; eval: (put 'ediff-eval-in-buffer 'edebug-form-spec '(form body))
 ;;; End:
 
 (provide 'ediff-diff)