Hi Jambunathan,

Jambunathan K <kjambunathan@gmail.com> writes:

>     (font-lock-add-keywords
>      'org-mode `(("\\(?:^\\(?1:\\*+\\)[[:blank:]]\\)"
>                   (0 (progn (compose-region
>                              (match-beginning 1) (match-end 1)
>                              (pcase (length (match-string 1))
>                                (1 ?\u2219)
>                                (2 ?\u2022)
>                                (3 ?\u25c9)
>                                (_ ?\u25CB)))
>                             nil)))))

This does convert all headlines characters (*+) to a single
unicode character.  Close to what many users are looking for,
but extending this snippet to handle converting several *
characters would come closer.

Are you working on this?  If so, could this be a minor mode?

Thanks,

--
 Bastien