(define-ibuffer-filter filename): Use `ibuffer-buffer-file-name'.

lisp/ChangeLog

+2008-05-13  John Paul Wallington  <jpw@pobox.com>
+
+	* ibuffer.el (ibuffer-buffer-file-name): New function.
+	(define-ibuffer-column filename): Use it.
+
+	* ibuf-ext.el (define-ibuffer-filter filename): Use it.
+
 2008-05-13  Chong Yidong  <cyd@stupidchicken.com>
 
 	* talk.el (talk): Simplify.  Pass display arg to talk-add-display

lisp/ibuf-ext.el

@@ -1030,16 +1030,7 @@ currently used by buffers."
   (:description "filename"
    :reader (read-from-minibuffer "Filter by filename (regexp): "))
   (ibuffer-awhen (with-current-buffer buf
-		   (or buffer-file-name
-		       (and (boundp 'dired-directory)
-			    (let ((dired-dir
-				   (if (stringp dired-directory)
-				       dired-directory
-				     (car dired-directory))))
-			      (and dired-dir
-				   (expand-file-name dired-dir))))
-		       (and (eq major-mode 'vc-dir-mode)
-			    (bound-and-true-p default-directory))))
+		   (ibuffer-buffer-file-name))
 		 (string-match qualifier it)))
 
 ;;;###autoload (autoload 'ibuffer-filter-by-size-gt  "ibuf-ext")