paste (yank) in emacs

use 'browse-kill-ring.el' and add the following in .emacs file
[coolcode]
(require 'browse-kill-ring)
(global-set-key [(control c)(k)] 'browse-kill-ring)
(browse-kill-ring-default-keybindings)[/coolcode]

M-y (or C-c k) to open another frame to show all the copy history, use 'y' or 'i' to paste old one.