Prune erroneous values in dired-get-marked-files

Fixes: debbugs:13152

2 files changed, 13 insertions, 6 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index cd7a013d55c..7be8224ae65 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2013-01-18  Leo Liu  <sdl.web@gmail.com>
+
+        * dired.el (dired-get-marked-files): Prune erroneous values due to
+        last change.  (Bug#13152)
+
 2013-01-17  Glenn Morris  <rgm@gnu.org>
 
         * progmodes/etags.el (tags-table-check-computed-list):
diff --git a/lisp/dired.el b/lisp/dired.el
index 3d01c7b0924..76809f992cc 100644
--- a/lisp/dired.el
+++ b/lisp/dired.el
@@ -620,12 +620,14 @@ Optional third argument FILTER, if non-nil, is a function to select
 If DISTINGUISH-ONE-MARKED is non-nil, then if we find just one marked file,
 return (t FILENAME) instead of (FILENAME).
 Don't use that together with FILTER."
-  (let* ((all-of-them
-          (save-excursion
-            (dired-map-over-marks
-             (dired-get-filename localp 'no-error-if-not-filep)
-             arg nil distinguish-one-marked)))
-         result)
+  (let ((all-of-them
+         (save-excursion
+           (delq nil (dired-map-over-marks
+                      (dired-get-filename localp 'no-error-if-not-filep)
+                      arg nil distinguish-one-marked))))
+        result)
+    (when (equal all-of-them '(t))
+      (setq all-of-them nil))
     (if (not filter)
         (if (and distinguish-one-marked (eq (car all-of-them) t))
             all-of-them