How to indent a buffer in ESS?

Question

ESS allows us to indent a line and an expression. Is there a key binding for indenting a buffer? If not, can we create it?

Answer 1

Not sure about a buffer but you can mark a region and then use C-M-\ on it.

Answer 2

As stated by others you could mark the whole buffer C-x h and then indent the region with C-M-\

You could also put something along these lines in your .emacs file:

(defun my-indent-buffer()
  (interactive)
  (save-excursion
    (indent-region (point-min) (point-max))))

(global-set-key "\C-cib" 'my-indent-buffer)

This has the benefit of remembering your point.