Using comment characters for specific major modes

[martin-kemp]

I only want to change the first two, the rest remains the same



Suppose lena is 8


emacs-lisp-mode

;; ;;;;;;;;



f90-mode

!! ;;;;;;;;



fortran-mode

cc ;;;;;;;; 



texinfo-mode

@c ;;;;;;;;







From: Jean Louis <bugs@gnu.support>
To: martin-kemp@brusseler.com
Subject: Re: Using comment characters for specific major modes
Date: 05/06/2021 23:50:25 Europe/Paris
Cc: help-gnu-emacs@gnu.org

* 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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