Deleting from Emacs sequence vars

from blog lmno.lol @alvaro, | ↗ original
Adding hooks and setting variables is core to customizing Emacs. Take a major mode like emacs-lisp-mode as an example. To customize its behaviour, one may add a hook function to emacs-lisp-mode-hook, or if you're a little lazy while experimenting, you may even use a lambda. (add-hook 'emacs-lisp-mode-hook #'my/emacs-lisp-mode-config)...