Re: Using comment characters for specific major modes

[Jean Louis <bugs@gnu.support>]

* martin-kemp@brusseler.com <martin-kemp@brusseler.com> [2021-06-05 23:52]:
> Am using the following expression to make a line composed of ";" of length lena.
> 
> The first two semicolons ";;" are for when I use elisp code.
> 
>     (setq-local s (concat ";; " (make-string lena ?\;)))
> 
> But I want to change the starting ";;" to be the comment character
> of the major mode I am working with.
> 
> For texinfo I want "@c", and for fortran-mode I want "c", and "!!"
> for f90-mode.

Those things I would always use as a function. Possibility is
great that I misunderstand you due to short description of what
you want.

(defun my-fancy-thing ()
  (interactive)
  (let* ((initial (completing-read "Comment: " '("1 ;;" "2 !!") nil t))
	 (comment (substring initial 2))
	 (lena 10)
	 (string (make-string lena (string-to-char (substring initial 2)))))
    (insert (concat comment " " string))))

;; ;;;;;;;;;;

!! !!!!!!!!!!



-- 
Jean

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