Configure eshell-mode after upgrade emacs to 24.3.1

Configure eshell-mode after upgrade emacs to 24.3.1


 My eshell-mode doesn't works after I upgrade emacs to 24.3.1. I got the empty symbol "eshell-output-filter-functions" error every time I start eshell-mode. 

The symbol "eshell-output-filter-functions" located in esh-mode.el. So I need to load the esh-mode.el before the code which refers to the "eshell-output-filter-functions" symbol. 

After that My eshell-mode's configure code is as following: 

(setq eshell-cmpl-cycle-completions nil
      eshell-save-history-on-exit t
      eshell-cmpl-dir-ignore "\\`\\(\\.\\.?\\|CVS\\|\\.svn\\|\\.git\\)/\\'")

;; load esh-mode first
(require 'esh-mode)

(eval-after-load 'esh-opt
  '(progn
     (require 'em-cmpl)
     (require 'em-prompt)
     (require 'em-term)
     ;; TODO: for some reason requiring this here breaks it, but
     ;; requiring it after an eshell session is started works fine.
     ;; (require 'eshell-vc)
     (setenv "PAGER" "cat")
     ; (set-face-attribute 'eshell-prompt nil :foreground "turquoise1")
     (add-to-list 'eshell-visual-commands "ssh")
     (add-to-list 'eshell-visual-commands "tail")
     (add-to-list 'eshell-command-completions-alist
                  '("gunzip" "gz\\'"))
     (add-to-list 'eshell-command-completions-alist
                  '("tar" "\\(\\.tar|\\.tgz\\|\\.tar\\.gz\\)\\'"))
     (add-to-list 'eshell-output-filter-functions 'eshell-handle-ansi-color)))

(provide 'my-eshell)
Another notice is that byte compiles the source code again when you met error message after an upgrade the emacs.

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