-(global-unset-key "\C-o")
-(global-set-key (kbd "C-o C-f") 'ido-find-file)
-(global-set-key (kbd "C-o C-b") 'ido-switch-buffer)
+;;;(require 'helm-gtags)
+;;;;(require 'setup-helm-gtags)
+;;;;(helm-gtags-mode 1)
+;;;;;; Enable helm-gtags-mode
+;;;(add-hook 'c-mode-hook 'helm-gtags-mode)
+;;;(add-hook 'c++-mode-hook 'helm-gtags-mode)
+;;;(add-hook 'asm-mode-hook 'helm-gtags-mode)
+;;;
+;;;;; customize
+;;;(custom-set-variables
+;;; '(helm-gtags-path-style 'relative)
+;;; '(helm-gtags-ignore-case t)
+;;; '(helm-gtags-auto-update t))
+;;;
+;;;;; key bindings
+;;;(eval-after-load "helm-gtags"
+;;; '(progn
+;;; (define-key helm-gtags-mode-map (kbd "M-t") 'helm-gtags-find-tag)
+;;; (define-key helm-gtags-mode-map (kbd "M-r") 'helm-gtags-find-rtag)
+;;; (define-key helm-gtags-mode-map (kbd "M-s") 'helm-gtags-find-symbol)
+;;; (define-key helm-gtags-mode-map (kbd "M-g M-p") 'helm-gtags-parse-file)
+;;; (define-key helm-gtags-mode-map (kbd "C-c <") 'helm-gtags-previous-history)
+;;; (define-key helm-gtags-mode-map (kbd "C-c >") 'helm-gtags-next-history)
+;;; (define-key helm-gtags-mode-map (kbd "M-,") 'helm-gtags-pop-stack)))