Function: dired-normalize-subdir
dired-normalize-subdir is a byte-compiled function defined in
dired.el.gz.
Signature
(dired-normalize-subdir DIR)
Source Code
;; Defined in /usr/src/emacs/lisp/dired.el.gz
(defun dired-normalize-subdir (dir)
;; Prepend default-directory to DIR if relative file name.
;; dired-get-filename must be able to make a valid file name from a
;; file and its directory DIR.
(file-name-as-directory
(if (file-name-absolute-p dir)
dir
(expand-file-name dir default-directory))))