Fix bug with make-directory on MS-Windows root

* lisp/files.el (files--ensure-directory): Treat any error, not
just file-already-exists, as an opportunity to check whether DIR
is already a directory (Bug#28508).

diff --git a/lisp/files.el b/lisp/files.el
index ff0ab7063388b786cfdd89bf023580314fd3d02a..0c30d40c13b329fec457752d7fce6734798c466d 100644 (file)
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -5337,7 +5337,7 @@ instance of such commands."
   "Make directory DIR if it is not already a directory.  Return nil."
   (condition-case err
       (make-directory-internal dir)
-    (file-already-exists
+    (error
      (unless (file-directory-p dir)
        (signal (car err) (cdr err))))))