Re: Indenting with spaces rather than tabs

[wael-zwaiter@gmx.com]

I am having problems with this code

(defun break-comments ()
  "Break lines when they exceed a specific character length."
  (setq-local comment-auto-fill-only-comments t))

(defvar dfv-break-comments-state nil)

;; Cycles line breaking tool
(defun cycle-break-comments ()
  "Break comments in programming languages."
  (interactive)

  (pcase dfv-break-comments-state
    ;;
    (1 (setq-local comment-auto-fill-only-comments nil)
       (auto-fill-mode 0)
       (setq dfv-break-comments-state 0)
       (message "%s" "Disable: Break comments"))
    ;;
    (_ (setq fill-column 72)
       (auto-fill-mode)
       (if (not nil dfv-break-comments-state)
	   (add-hook 'prog-mode-hook #'break-comments)
	 (progn
	   (add-hook 'sh-mode-hook          #'break-comments)
	   (add-hook 'fortran-mode-hook     #'break-comments)
	   (add-hook 'emacs-lisp-mode-hook  #'break-comments)
	   (add-hook 'c-mode-hook           #'break-comments)
	   (add-hook 'c++-mode-hook         #'break-comments)
	   (add-hook 'awk-mode-hook         #'break-comments)
	   (add-hook 'R-mode-hook           #'break-comments)
	   (add-hook 'octave-mode-hook      #'break-comments)))
       ;;
       (add-hook 'texinfo-mode-hook  #'break-comments)
       (add-hook 'text-mode-hook     #'break-comments)
       ;;
       (setq dfv-break-comments-state 1)
       (message "%s" "Break comments using prog-mode-hook")) ))

  ;; Break comments using auto-fill
  (global-set-key (kbd "H-q") #'cycle-break-comments)



> Sent: Sunday, January 31, 2021 at 6:46 AM
> From: "Robert Thorpe" <rt@robertthorpeconsulting.com>
> To: wael-zwaiter@gmx.com
> Cc: help-gnu-emacs@gnu.org
> Subject: Re: Indenting with spaces rather than tabs
>
> wael-zwaiter@gmx.com writes:
>
> > Can I do as follows, so that tabs are removed when "dfv-untabify-state"
> > is "true".
> >
> > (defvar dfv-untabify-state nil)
> > (defun clean-before-save ()
> >   "Removes trailing spaces and tabs upon exiting"
> >
> >   (delete-trailing-whitespace)
> >   (when (dfv-untabify-state)
> >       (unless (member major-mode '(makefile-gmake-mode makefile-mode))
> > 	(untabify (point-min) (point-max))) ))
>
> Yes you can do that.  I think Mr.Berg gave some similar code in this
> thread.
>
> Be careful though about accidentally wrecking files.  I notice you've
> exempted makefiles, which is a good idea.  You might want to exempt
> more, like config files.
>
> If you're doing work on a VC system with others then changing tabs
> becomes a major irritation.  That's because it creates a lot of false
> changes (i.e. line changes where the code hasn't really changed).
>
> BR,
> Robert Thorpe
>
>