Ubuntu custom emacs

custom.el

;; custom for ubuntu

(setq gem_home "/home/mig/.gem")
(setenv "GEM_HOME" gem_home)

;; Swap alt and meta in emacs
; (setq x-super-keysym 'meta)

(setq x-select-enable-clipboard t)
(setq interprogram-paste-function 'x-cut-buffer-or-selection-value)

(global-set-key (kbd "C-c b") 'eval-buffer)
(global-set-key (kbd "C-x f") 'recentf-ido-find-file)
(global-set-key (kbd "M-s") 'save-buffer)
(global-set-key (kbd "M-z") 'undo)

;; set line commenting to textmate style
(global-set-key (kbd "M-/") 'comment-or-uncomment-region)