automatically swith rubies when changing buffer to a ruby buffer outside the current project.

auto-rvm.el

;; automatically swith rubies when changing buffer to a ruby buffer outside the current project.

;; requires rvm.el and projectile

(defvar jorbi/-last-active-ruby-project nil)

(defun jorbi/maybe-activate-new-ruby ()
  (when (and (equal major-mode 'ruby-mode)
             (not (equal jorbi/-last-active-ruby-project
                         (setq jorbi/-last-active-ruby-project
                               (projectile-project-name)))))
    (rvm-activate-corresponding-ruby)))
(add-hook 'buffer-list-update-hook 'jorbi/maybe-activate-new-ruby))