(dired-get-filename): Err for . and .. in usual case.

(dired-get-file-for-visit): Specify no-error to dired-get-filename,
and check for real errors here.
(dired-unmark-all-files): Specify no-error to dired-get-filename.

lisp/ChangeLog

+2003-06-04  Richard M. Stallman  <rms@gnu.org>
+
+	* dired.el (dired-get-filename): Err for . and .. in usual case.
+	(dired-get-file-for-visit): Specify no-error to dired-get-filename,
+	and check for real errors here.
+	(dired-unmark-all-files): Specify no-error to dired-get-filename.
+
+	* buff-menu.el (list-buffers-noselect): Use window-inside-edges
+	to compute the number of offset spaces.
+	(list-buffers-noselect): Use Buffer-menu-buffer+size to
+	indent the dashes properly.  Put some in fixed-pitch.
+
 2003-06-04  Lars Hansen  <larsh@math.ku.dk>
 	* desktop.el (desktop-create-buffer): Undo last change.

lisp/dired.el

@@ -1350,7 +1350,12 @@ Creates a buffer if necessary."
 (defun dired-get-file-for-visit ()
   "Get the current line's file name, with an error if file does not exist."
   (interactive)
-  (let ((file-name (file-name-sans-versions (dired-get-filename) t)))
+  ;; We pass t for second arg so that we don't get error for `.' and `..'.
+  (let ((raw (dired-get-filename nil t))
+	file-name)
+    (if (null raw)
+	(error "No file on this line"))
+    (setq file-name (file-name-sans-versions raw t))
     (if (file-exists-p file-name)
 	file-name
       (if (file-symlink-p file-name)
@@ -1482,6 +1487,11 @@ Optional arg NO-ERROR-IF-NOT-FILEP means return nil if no filename on
     (cond
      ((null file)
       nil)
+     ((and (not no-error-if-not-filep)
+	   (save-excursion
+	     (beginning-of-line)
+	     (looking-at dired-re-dir)))
+      (error "Cannot operate on `.' or `..'"))
      ((eq localp 'verbatim)
       file)
      ((and (eq localp 'no-dir) already-absolute)
@@ -2658,8 +2668,10 @@ Type SPC or `y' to unmark one file, DEL or `n' to skip to next,
 		 (re-search-forward dired-re-mark nil t)
 	       (search-forward string nil t))
 	(if (or (not arg)
-		(dired-query 'query "Unmark file `%s'? "
-			     (dired-get-filename t)))
+		(let ((file (dired-get-filename t t)))
+		  (and file
+		       (dired-query 'query "Unmark file `%s'? "
+				    file))))
 	    (progn (subst-char-in-region (1- (point)) (point)
 					 (preceding-char) ?\ )
 		   (setq count (1+ count)))))