James Chertioutline-indent, a modern indentation-based folding mode for #Emacs:
https://github.com/jamescherti/outline-indent.el
https://github.com/jamescherti/outline-indent.el
GitHub - jamescherti/outline-indent.el: Outline-indent: Indentation based Folding for Emacs (Supersedes legacy packages such as origami.el and yafolding.el)
Outline-indent: Indentation based Folding for Emacs (Supersedes legacy packages such as origami.el and yafolding.el) - jamescherti/outline-indent.el