Emacs Lisp: Cut Copy Paste to/from kill-ring
How to cut text to kill-ring?
;; delete text between buffer positions and push to kill-ring (kill-region 247 528)
Full example: Emacs: Copy/Cut Current Line If No Selection
Note: User's kill-ring content should not change unexpectedly. Emacs lisp function should not use the kill-ring as temp storage area for itself. If your command is specifically designed to put text to the kill-ring so that user can paste it later, then good. Else, just save text to a variable for your elisp program's use.
How to copy text to kill-ring?
;; push text between buffer positions to kill-ring (kill-ring-save 247 528)
If you already have a string, use
;; push a string into kill-ring (kill-new "cute cat")
(defun my-copy-all () "Put the whole buffer content into the `kill-ring'. (respects `narrow-to-region')" (interactive) (kill-new (buffer-string)) (message "Buffer content copied."))
How to paste from kill-ring?
;; paste from kill-ring (yank)
How to mark a region?
To mark a region, do
(push-mark my_positon). The current cursor positon to my_positon will become the new region.
To make the region active, use
(setq mark-active t). 〔►see Emacs: What's Region, Active Region, transient-mark-mode?〕
(defun my-select-text-in-quote () "Select text between the nearest left and right quotes." (interactive) (let (-pos (-skipChars "^\"")) (skip-chars-backward -skipChars) (setq -pos (point)) (skip-chars-forward -skipChars) (push-mark -pos) (setq mark-active t)))
More examples: Emacs: Select Line, between Quotes, Extend Selection
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