Change dd command in evil mode to not write to clipboard

Question

I would like to use normal modes commands like d c x etc without the content being copied to clipboard.

I want to make emacs so that only y command will write anything to the clipboard. Other commands like d should only delete the content without writing anything to the clipboard.

Answer 1

(setq save-interprogram-paste-before-kill nil)

Separating the clipboard and kill-ring is more efficient for my workflow, for clipboard, I use https://github.com/rolandwalker/simpleclip API simpleclip-set-content and simpleclip-get-content

Answer 2

If you do C-h k d you'll see that d is bounded to evil-delete, so:

(define-key evil-normal-state-map "dd" 'my/very-special-evil-delete)

should do the work. There's a "/dev/null-ish" (blackhole) register in vim which probably evil mocks.

Answer 3

This adds an advice around evil stuff to drop it to _ register.

(defun meain/evil-delete-advice (orig-fn beg end &optional type _ &rest args)
    "Make d, c, x to not write to clipboard."
    (apply orig-fn beg end type ?_ args))
(advice-add 'evil-delete :around 'meain/evil-delete-advice)
(advice-add 'evil-change :around 'meain/evil-delete-advice)