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Re: Auto Fill Comments

From: daniela-spit
Subject: Re: Auto Fill Comments
Date: Tue, 24 Nov 2020 20:42:38 +0100

This is what I use.  I find no good reason to use c-mode-common-hook.

(defun break-comment ()
   (setq-local comment-auto-fill-only-comments t)
   (auto-fill-mode 1))

(add-hook 'sh-mode-hook          #'break-comment)
(add-hook 'fortran-mode-hook     #'break-comment)
(add-hook 'emacs-lisp-mode-hook  #'break-comment)
(add-hook 'texinfo-mode-hook     #'break-comment)

(add-hook 'c-mode-hook       #'break-comment)
(add-hook 'c++-mode-hook     #'break-comment)
(add-hook 'awk-mode-hook     #'break-comment)
(add-hook 'R-mode-hook       #'break-comment)
(add-hook 'octave-mode-hook  #'break-comment)
(add-hook 'text-mode-hook    #'break-comment)

> Sent: Tuesday, November 24, 2020 at 6:05 PM
> From: "Christopher Dimech" <>
> To: "Help Gnu Emacs" <>
> Subject: Auto Fill Comments
> Would this be good enough  to Auto Fill Comments in c language.
> What can I use for Auto Fill Comments for other languages, e.g.
> fortran, elisp, c++, texinfo, bash, awk, org, R.
> ;; Apply Auto Fill to comments but not code in programming language modes.
> (add-hook 'c-mode-common-hook
>    (lambda ()
>       (auto-fill-mode 1)
>       (set
>          (make-local-variable 'fill-nobreak-predicate)
>          (lambda ()
>             (not (eq (get-text-property (point) 'face)
>                     'font-lock-comment-face)))) ))

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