Re: indent-tabs-mode in dir-locals

[Juri Linkov]

> I had believed the unwritten rule till now was "respect whatever the
> file currently uses" (which there should be a setting for; but that's
> a wishlist item).

The problem is that this rule is still unwritten ;)

So we should add a function:

(defun indent-tabs-mode-maybe ()
  (if (and (null indent-tabs-mode)
           ;; Trust the major mode.
           (not (local-variable-p 'indent-tabs-mode))
           (save-excursion
             (goto-char (point-min))
             ;; If there are at least 10 lines with a leading TAB, use TABs.
             (re-search-forward "^      " (+ (point) 100000) t 10)))
      (set (make-local-variable 'indent-tabs-mode) t)))

based on heuristics from Stefan
at http://thread.gmane.org/gmane.emacs.devel/42665/focus=43402

-- 
Juri Linkov
http://www.jurta.org/emacs/