How to achieve code folding effects in Emacs?

Question

Whats the best way to achieve something like code folding, or the type of cycling that org-mode uses. What would be the best solution in elisp to create this type of behavi

Answer 1

vimish-fold is also a nice and easy solution.

https://github.com/mrkkrp/vimish-fold.

From the homepage:

This is a package to perform text folding like in Vim. It has the following features:

• folding of active regions;
• good visual feedback: it's obvious which part of text is folded;
• persistence by default: when you close file your folds don't disappear;
• persistence scales well, you can work on hundreds of files with lots of folds without adverse effects;
• it doesn't break indentation or something;
• folds can be toggled from folded state to unfolded and back very easily;
• quick navigation between existing folds;
• you can use mouse to unfold folds (good for beginners and not only for them);
• for fans of avy package: you can use avy to fold text with minimal number of key strokes!

Using the excellent use-package I install and activate it using this snippet in my config:

(use-package vimish-fold
  :ensure t
  :config (vimish-fold-global-mode t))