Re: whitespace-cleanup + untabify?

[Nikolaj Schumacher <n_schumacher@web.de>]

Kevin Rodgers <kevin.d.rodgers@gmail.com> wrote:

> It's not documented, but because whitespace-global-mode is defined
> via define-minor-mode there should be whitespace-global-mode-hook.
> So perhaps something like this will work:
>
> (add-hook 'whitespace-global-mode-hook
> 	  (lambda ()
> 	    (when whitespace-global-mode
> 	      (untabify (point-min) (point-max)))))

That won't work.  It will probably only untabify the .emacs file.

It should instead add an `untabify' variant to
'find-file-hook, 'write-file-functions and 'kill-buffer-hook.

Of course that would ignore the setting of `whitespace-auto-cleanup',
and would stay active after the mode has been disabled.

I think the cleanest way would be a parallel mode:

(defun untabify-buffer ()
  (untabify (point-min) (point-max))
  nil ;; for write-file-functions
  )

(define-minor-mode untabify-global-mode
  :global t
  :group 'whitespace
  (if untabify-global-mode
      (progn
	(add-hook 'find-file-hook 'untabify-buffer)
	(add-hook 'write-file-functions 'untabify-buffer nil t)
	(add-hook 'kill-buffer-hook 'untabify-buffer))
    (remove-hook 'find-file-hook 'untabify-buffer)
    (remove-hook 'write-file-functions 'untabify-buffer t)
    (remove-hook 'kill-buffer-hook 'untabify-buffer)))

(Not tested.)


regards,
Nikolaj Schumacher