Compleet buffer to clipboard

[Decebal]

A lot of times I want to copy the complete buffer to the clipboard.
This is possible with:
    C-x h
    M-w

But one of the complications is that you lose your cursor position.
When you put in yor .emacs:
    (defun buffer-yank()
      (interactive)
      (kill-new (buffer-substring (point-min) (point-max))))

    (global-set-key (kbd "C-c C-a") 'buffer-yank)

Then you can use:
    C-c C-a
to copy the complete buffer to the clipboard.