(make-temp-file): Handle empty `prefix'. (Bug#1081)

lisp/ChangeLog

@@ -1,5 +1,7 @@
 2008-10-04  Glenn Morris  <rgm@gnu.org>
 
+	* files.el (make-temp-file): Handle empty `prefix'.  (Bug#1081)
+
 	* vc-svn.el (vc-svn-after-dir-status): Handle `svn status -u' output.
 	(vc-svn-dir-status): Respect vc-stay-local-p.  (Bug#1046)
 

lisp/files.el

@@ -976,7 +976,11 @@ If SUFFIX is non-nil, add that at the end of the file name."
 		     (progn
 		       (setq file
 			     (make-temp-name
-			      (expand-file-name prefix temporary-file-directory)))
+                              (if (zerop (length prefix))
+                                  (file-name-as-directory
+                                   temporary-file-directory)
+                                (expand-file-name prefix
+                                                  temporary-file-directory))))
 		       (if suffix
 			   (setq file (concat file suffix)))
 		       (if dir-flag