https://github.com/syohex/emacs-popup-complete.git
git clone 'git://github.com/syohex/emacs-popup-complete.git'
Packaging these code snippets by created LinhDang.

popup-complete-enable(Default is t)Use popup completion if this variable is non-nil.
popup-complete-enabled-modes(Default is nil)Major modes which enables popup-complete
;; Enables only 'lisp-interaction-mode' 'ruby-mode' 'scala-mode'
(custom-set-variables
'(popup-complete-enabled-modes '(lisp-interaction-mode ruby-mode scala-mode)))