[Emacs-diffs] emacs/lisp dos-fns.el

[Eli Zaretskii]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Eli Zaretskii <eliz>    08/12/26 15:01:34

Modified files:
        lisp           : dos-fns.el 

Log message:
        (dosified-file-name): New function.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/dos-fns.el?cvsroot=emacs&r1=1.56&r2=1.57

Patches:
Index: dos-fns.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/dos-fns.el,v
retrieving revision 1.56
retrieving revision 1.57
diff -u -b -r1.56 -r1.57
--- dos-fns.el  19 Oct 2008 11:20:00 -0000      1.56
+++ dos-fns.el  26 Dec 2008 15:01:34 -0000      1.57
@@ -186,6 +186,25 @@
                    (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)