Re: outline-minor-mode and comment syntax

On 2026-07-05 02:31, Heime wrote:
> Is outline-minor-mode specific to programming-like languages
> that start with comment characters?  Is it applicable to any
> kind of major mode or invented mode?

It is similar as outline mode just that it is used as minor mode to 
other modes.

You can use it in any major mode.

You would need to figure out how to set variables: outline-regexp and 
outline-heading-end-regexp and outline-heading-alist

And such function could be automatically invoked. See description for 
outline-heading-alist

Untested example:

(defun my-python-outline-setup ()
   (setq-local outline-regexp
               "^\\s-*\\(def\\|class\\)\\s-+")
   (setq-local outline-level
               (lambda ()
                 (1+ (/ (current-indentation) 2))))
   (setq-local outline-heading-end-regexp ":\n")
   (outline-minor-mode 1))

;; Add to python-mode-hook
(add-hook 'python-mode-hook #'my-python-outline-setup)



-- 
Jean Louis