Subject: bug#6632: 23.2.50; dired-mode should use [remap ...] instead of hard-coded overriding of global key bindings

From: Teemu Likonen <[email-masked]>
Date: Wed, 14 Jul 2010 18:58:13 +0300

dired-mode uses hard-coding when it rebinds some global key bindings.
For example, there is the following line in dired.el file:

    (define-key map "\C-n" 'dired-next-line)

Therefore it overrides the global C-n key, whatever its command is in
user's keymap. The command should be bound like this:

    (define-key map [remap next-line] 'dired-next-line)

Using [remap ...] is preferred because it makes it possible for user to
redefine the global keymap they way she wishes and keys will still
automatically get their mode-specific behaviour. The attached patch
fixes this for dired-mode.

diff --git a/lisp/dired.el b/lisp/dired.el
index c3d1435..0e5cc22 100644
--- a/lisp/dired.el
+++ b/lisp/dired.el
@@ -1380,10 +1380,8 @@ Do so according to the former subdir alist OLD-SUBDIR-ALIST."
     (define-key map ">" 'dired-next-dirline)
     (define-key map "^" 'dired-up-directory)
     (define-key map " "  'dired-next-line)
-    (define-key map "\C-n" 'dired-next-line)
-    (define-key map "\C-p" 'dired-previous-line)
-    (define-key map [down] 'dired-next-line)
-    (define-key map [up] 'dired-previous-line)
+    (define-key map [remap next-line] 'dired-next-line)
+    (define-key map [remap previous-line] 'dired-previous-line)
     ;; hiding
     (define-key map "$" 'dired-hide-subdir)
     (define-key map "\M-$" 'dired-hide-all)
@@ -1393,7 +1391,7 @@ Do so according to the former subdir alist OLD-SUBDIR-ALIST."
     (define-key map (kbd "M-s f C-s")   'dired-isearch-filenames)
     (define-key map (kbd "M-s f M-C-s") 'dired-isearch-filenames-regexp)
     ;; misc
-    (define-key map "\C-x\C-q" 'dired-toggle-read-only)
+    (define-key map [remap toggle-read-only] 'dired-toggle-read-only)
     (define-key map "?" 'dired-summary)
     (define-key map "\177" 'dired-unmark-backward)
     (define-key map [remap undo] 'dired-undo)