* lisp/dired.el (dired-mark): If the region is active in Transient Mark

mode, mark all files in the active region.  Doc fix.
(dired-unmark, dired-flag-file-deletion, dired-unmark-backward):
Doc fix.

Fixes: debbugs:10624

3 files changed, 37 insertions, 7 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 35d540a9b85..c972180bbbd 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -463,6 +463,10 @@ Otherwise, it executes the command on each file in parallel.
 `dired-do-chown', `dired-do-touch' pulls the file attributes of the
 file at point.
 
+*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
+`DEL' (`dired-unmark-backward'), `d' (`dired-flag-file-deletion')
+mark/unmark/flag all files in the active region.
+
 *** The minibuffer default for `=' (`dired-diff) has changed.
 It is now the backup file for the file at point, if one exists, rather
 than the file at the mark.
diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 43eddd7c699..66927960d25 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,12 @@
 2012-09-18  Juri Linkov  <juri@jurta.org>
 
+        * dired.el (dired-mark): If the region is active in Transient Mark
+        mode, mark all files in the active region.  Doc fix.
+        (dired-unmark, dired-flag-file-deletion, dired-unmark-backward):
+        Doc fix.  (Bug#10624)
+
+2012-09-18  Juri Linkov  <juri@jurta.org>
+
         * dired-aux.el (dired-do-chxxx, dired-do-chmod): Default file
         attributes for M-n are pulled from the file at point.
         (dired-do-chgrp, dired-do-chown, dired-do-touch): Doc fix.
diff --git a/lisp/dired.el b/lisp/dired.el
index df1b5698f12..abbd5acaf4f 100644
--- a/lisp/dired.el
+++ b/lisp/dired.el
@@ -3097,21 +3097,37 @@ argument or confirmation)."
 (defun dired-mark (arg)
   "Mark the current (or next ARG) files.
 If on a subdir headerline, mark all its files except `.' and `..'.
+If the region is active in Transient Mark mode, mark all files
+in the active region.
 
 Use \\[dired-unmark-all-files] to remove all marks
 and \\[dired-unmark] on a subdir to remove the marks in
 this subdir."
   (interactive "P")
-  (if (dired-get-subdir)
-      (save-excursion (dired-mark-subdir-files))
+  (cond
+   ;; Mark files in the active region.
+   ((and transient-mark-mode mark-active)
+    (save-excursion
+      (let ((beg (region-beginning))
+            (end (region-end)))
+        (dired-mark-files-in-region
+         (progn (goto-char beg) (line-beginning-position))
+         (progn (goto-char end) (line-beginning-position))))))
+   ;; Mark subdir files from the subdir headerline.
+   ((dired-get-subdir)
+    (save-excursion (dired-mark-subdir-files)))
+   ;; Mark the current (or next ARG) files.
+   (t
     (let ((inhibit-read-only t))
       (dired-repeat-over-lines
        (prefix-numeric-value arg)
-       (function (lambda () (delete-char 1) (insert dired-marker-char)))))))
+       (function (lambda () (delete-char 1) (insert dired-marker-char))))))))
 
 (defun dired-unmark (arg)
   "Unmark the current (or next ARG) files.
-If looking at a subdir, unmark all its files except `.' and `..'."
+If looking at a subdir, unmark all its files except `.' and `..'.
+If the region is active in Transient Mark mode, unmark all files
+in the active region."
   (interactive "P")
   (let ((dired-marker-char ?\040))
     (dired-mark arg)))
@@ -3119,8 +3135,9 @@ If looking at a subdir, unmark all its files except `.' and `..'."
 (defun dired-flag-file-deletion (arg)
   "In Dired, flag the current line's file for deletion.
 With prefix arg, repeat over several lines.
-
-If on a subdir headerline, mark all its files except `.' and `..'."
+If on a subdir headerline, flag all its files except `.' and `..'.
+If the region is active in Transient Mark mode, flag all files
+in the active region."
   (interactive "P")
   (let ((dired-marker-char dired-del-marker))
     (dired-mark arg)))
@@ -3128,7 +3145,9 @@ If on a subdir headerline, mark all its files except `.' and `..'."
 (defun dired-unmark-backward (arg)
   "In Dired, move up lines and remove marks or deletion flags there.
 Optional prefix ARG says how many lines to unmark/unflag; default
-is one line."
+is one line.
+If the region is active in Transient Mark mode, unmark all files
+in the active region."
   (interactive "p")
   (dired-unmark (- arg)))