如何在emacs 24中启用电子配对模式

我根据本页说明启用了电子对模式：http://ergoemacs.org/emacs/emacs_insert_brackets_by_pair.html，即将这些行添加到〜/ .emacs：

;; autocomplete paired brackets
(electric-pair-mode 1)

但是这没有任何效果，我仍然需要 M-x electric-pair-mode 来激活它 . 为什么会这样？

在Mac OSX上，Emacs版本是24.3 .

这是我的整个〜/ .emacs

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; set up package-archives
(require 'package)
(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(package-archives (quote (("gnu" . "http://elpa.gnu.org/packages/") ("marmalade" . "http://marmalade-repo.org/packages/") ("melpa" . "http://melpa.milkbox.net/packages/"))))
 '(py-shell-name "python3")
 '(py-split-windows-on-execute-function (quote split-window-horizontally))
 '(scroll-bar-mode nil)
 '(send-mail-function (quote mailclient-send-it))
 '(tool-bar-mode nil)
 '(truncate-lines t))
(custom-set-faces
 ;; custom-set-faces was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(default ((t (:family "DejaVu Sans Mono for Powerline" :foundry "unknown" :slant normal :weight normal :height 120 :width normal))))
 '(cursor ((t (:background "light gray" :foreground "pale green")))))
(package-initialize)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


;;;;;;;;;;;; ESS settings ;;;;;;;;;;;;;;;;;;;;;;;;;
;;ESS
(require 'ess-site)
(ess-toggle-underscore nil)
(setq ess-history-file nil)
(setq ess-help-kill-bogus-buffers t)
(setq 
      ac-auto-show-menu 0
      ac-candidate-limit nil
      ac-delay 0.1
      ac-disable-faces (quote (font-lock-comment-face font-lock-doc-face))
      ac-ignore-case 'smart
      ac-menu-height 10
      ac-quick-help-delay 111.5
      ac-quick-help-prefer-pos-tip t
      ac-use-quick-help nil
)

(add-hook 'ess-mode-hook
          (lambda ()
            (ess-set-style 'C++ 'quiet)
            (add-hook 'local-write-file-hooks
                      (lambda ()
                        (ess-nuke-trailing-whitespace)))))
(setq ess-nuke-trailing-whitespace-p 'ask)
;; or even
;; (setq ess-nuke-trailing-whitespace-p t)
;; do not ask for working dir
(setq ess-ask-for-ess-directory nil)
;; always split side by side
(defun forbid-vertical-split ()
  "Only permit horizontal window splits."
  (setq-local split-height-threshold nil)
  (setq-local split-width-threshold 0))
(add-hook 'ess-mode-hook
          'forbid-vertical-split)
;; Let the ESS R console automatically scroll!
(setq comint-scroll-to-bottom-on-input t)
(setq comint-scroll-to-bottom-on-output t)
(setq comint-move-point-for-output t)
(define-key comint-mode-map [C-up] 'comint-previous-matching-input-from-input)
(define-key comint-mode-map [C-down] 'comint-next-matching-input-from-input)
; (define-key ess-mode-map (kbd "C-c d") 'comment-region)
; (define-key ess-mode-map (kbd "C-c u") 'uncomment-region)
;; (define-key ess-mode-map (kbd "C-S-e") 'comment-region)
;; (define-key ess-mode-map (kbd "C-S-d") 'uncomment-region)
;; ESS Mode (.R file)
  (define-key ess-mode-map "\C-l" 'ess-eval-line-and-step)
  (define-key ess-mode-map "\C-p" 'ess-eval-function-or-paragraph-and-step)
  (define-key ess-mode-map "\C-r" 'ess-eval-region)
;; use this one if each help window goes to a new frame
(setq ess-help-own-frame t)
;; use this one if you want all help windows into one frame!
(setq ess-help-own-frame 'one)
;;;;;;;;;;;; ESS settings ;;;;;;;;;;;;;;;;;;;;;;;;;


;;;;;;;;;;;; Perl settings ;;;;;;;;;;;;;;;;;;;;;;;
(add-hook 'perl-mode-hook
          (lambda () (setq perl-indent-level 4)))
;;;;;;;;;;;; Perl settings ;;;;;;;;;;;;;;;;;;;;;;;



;;;;;;;;;;;; evil copied to osx ;;;;;;;;;;;;;;;;;;;;;;;;;
;; evil and its plugins (ports from vim, or not?)
(require 'evil)
(evil-mode 1)
;; evil nerd commenter
(evilnc-default-hotkeys)
;;;;;;;;;;;; evil copied to osx ;;;;;;;;;;;;;;;;;;;;;;;;;



;;;;;;;;;;;; settings copied to osx ;;;;;;;;;;;;;;;;;;;;;;;;;
;; shift width set to 4
(setq c-basic-offset 4)
(setq-default tab-width 4)

;; autocomplete globally
(require 'auto-complete)
(defun auto-complete-mode-maybe ()
  "I do not want MAYBE, I want real autocomplete!"
  (auto-complete-mode 1))
(global-auto-complete-mode t)

;; only show one window when start up
(add-hook 'emacs-startup-hook 'delete-other-windows)


;; no backup ~n~ nonsense please
(setq make-backup-files nil)
(setq auto-save-default nil)
;; no startup logo and message
(setq inhibit-startup-echo-area-message t)
(setq inhibit-startup-message t)
;; solarized theme
(load-theme 'solarized-dark t)
;;;;;;;;;;;; settings copied to osx ;;;;;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;; python stuff copied to osx ;;;;;;;;;;;;;;;;;;;;;;;;;
;; Standard Jedi.el setting
(add-hook 'python-mode-hook 'jedi:setup)
(setq jedi:setup-keys t)
(setq jedi:complete-on-dot t)

(require 'python-mode)
(add-to-list 'auto-mode-alist '("\.py\'" . python-mode))

;; send line to python console
(require 'python-mode)
(defun py-execute-line-down ()
  "execute python line and move cursor down"
  (interactive)
  (py-execute-line)
  (forward-line 1))
(define-key python-mode-map (kbd "C-c j") 'py-execute-line-down)
;;;;;;;;;;;; python stuff copied to osx ;;;;;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;; buffer/win management stuff ;;;;;;;;;;;;;;;;;;;;;;;;;
;; easy buffer switch
(require 'ido)
(ido-mode 'buffers) ;; only use this line to turn off ido for file names!
(setq ido-ignore-buffers '("^ " "*Completions*" "*Shell Command Output*"
               "*Messages*" "Async Shell Command"))

; use meta + arrow keys to switch between visible windows
;; handy in split views
(require 'windmove)
(windmove-default-keybindings 'meta)
;; automatically save buffers associated with files on buffer switch
;; and on windows switch
(defadvice switch-to-buffer (before save-buffer-now activate)
  (when buffer-file-name (save-buffer)))
(defadvice other-window (before other-window-now activate)
  (when buffer-file-name (save-buffer)))
(defadvice windmove-up (before other-window-now activate)
  (when buffer-file-name (save-buffer)))
(defadvice windmove-down (before other-window-now activate)
  (when buffer-file-name (save-buffer)))
(defadvice windmove-left (before other-window-now activate)
  (when buffer-file-name (save-buffer)))
(defadvice windmove-right (before other-window-now activate)
  (when buffer-file-name (save-buffer)))
;;;;;;;;;;;; buffer/win management stuff ;;;;;;;;;;;;;;;;;;;;;;;;;




;;;;;;;;;;;; misc ;;;;;;;;;;;;;;;;;;;;;;;
;; enable clipboard
(setq x-select-enable-clipboard t)
;; disable parentheses highlighting
(setq blink-matching-paren nil)
;; autocomplete paired brackets
(electric-pair-mode 1)
(global-set-key [C-tab] 'other-window)
;; tramp mode for editing through ssh
(setq tramp-default-method "ssh")
;;;;;;;;;;;; misc ;;;;;;;;;;;;;;;;;;;;;;;


;; probably a good idea to keep this at the very end!!
(server-start)
(setq server-socket-dir "~/.emacs.d/server")