;;; dos-fns.el --- MS-Dos specific functions
;; Copyright (C) 1991, 1993, 1995, 1996, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
;; Maintainer: Morten Welinder <terra@diku.dk>
;; Keywords: internal
(dos-8+3-filename dir))
string))))))
+;; This is for the sake of standard file names elsewhere in Emacs that
+;; are defined as constant strings or via defconst, and whose
+;; conversion via `convert-standard-filename' does not give good
+;; enough results.
+(defun dosified-file-name (file-name)
+ "Return a variant of FILE-NAME that is valid on MS-DOS filesystems.
+
+This function is for those rare cases where `convert-standard-filename'
+does not do a job that is good enough, e.g. if you need to preserve the
+file-name extension. It recognizes only certain specific file names
+that are used in Emacs Lisp sources; any other file name will be
+returned unaltered."
+ (cond
+ ;; See files.el:dir-locals-file.
+ ((string= file-name ".dir-locals.el")
+ "_dir-locals.el")
+ (t
+ file-name)))
+
;; See dos-vars.el for defcustom.
(defvar msdos-shells)