Add ert.el for Emacs-23.

Cask

@@ -4,4 +4,5 @@
 (package-file "ruby-end.el")
 
 (development
+ (depends-on "f")
  (depends-on "ecukes"))

features/support/env.el

@@ -1,18 +1,22 @@
-(let* ((current-directory (file-name-directory load-file-name))
-       (features-directory (expand-file-name ".." current-directory))
-       (project-directory (expand-file-name ".." features-directory)))
-  (setq ruby-end-root-path project-directory)
-  (setq ruby-end-util-path (expand-file-name "util" project-directory)))
+(require 'f)
+
+(defvar ruby-end-features-path
+  (f-parent (f-dirname (f-this-file))))
+
+(defvar ruby-end-root-path
+  (f-parent ruby-end-features-path))
+
+(defvar ruby-end-vendor-path
+  (f-expand "vendor" ruby-end-features-path))
 
 (add-to-list 'load-path ruby-end-root-path)
-(add-to-list 'load-path (expand-file-name "espuds" ruby-end-util-path))
-(add-to-list 'load-path (expand-file-name "emacs-lisp" (expand-file-name "lisp" (expand-file-name "ert" ruby-end-util-path))))
+
+(require 'ruby-end)
+(require 'espuds)
+(unless (require 'ert nil 'noerror)
+  (require 'ert (f-expand "ert" ruby-end-vendor-path)))
 
 (Before
  (setq ruby-end-insert-newline t)
  (setq ruby-end-expand-on-ret t)
  (setq ruby-end-expand-only-for-last-commands nil))
-
-(require 'ruby-end)
-(require 'espuds)
-(require 'ert)