[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#27530: patch to cut and copy secondary
From: |
Tak Kunihiro |
Subject: |
bug#27530: patch to cut and copy secondary |
Date: |
Tue, 05 Sep 2017 12:11:04 +0900 (JST) |
I found the secondary selection is very useful. I sent a patch on
June 2017 and Drew inferred importance of commands to utilize the
secondary selection.
> IMO, the first, and simplest, improvement to add to Emacs is
> a way to create and yank the secondary selection using only
> the keyboard, not the mouse. My guess is that the reason
> more users do not use the secondary selection is that there
> are no keyboard keybindings for it.
I found that the exchange of primary and secondary can be implemented
into C-x C-x as `mouse-exchange-point-and-mark-secondary'.
(global-set-key [remap exchange-point-and-mark]
'mouse-exchange-point-and-mark-secondary)
The function `mouse-exchange-point-and-mark-secondary' exchanges `mark
and point' and secondary. When there is neither primary nor
secondary, it behaves as `exchange-point-and-mark'. By doing this, no
revision is necessary for functions that react to region.
Here I send a revised patch that only applied to lisp/mouse.el to
utilize the secondary selection more. Please consider this patch to be
applied.
# Change log
2017-09-05 Tak Kunihiro <tkk@misasa.okayama-u.ac.jp>
Add a function to exchange the point and the mark, and the secondary
selection.
* lisp/mouse.el (mouse-exchange-point-and-mark-secondary): Exchange
the point and the mark, and the secondary selection.
(mouse-secondary-exists-p): Return if the secondary
selection exists in current buffer.
(mouse-set-primary-from-secondary): Set the region to text in the
secondary selection.
(mouse-set-secondary-from-primary): Set the secondary selection to
text in the region.
# Patch
diff --git a/mouse.260.el b/mouse.el
old mode 100644
new mode 100755
index 2fbaaad..505546f
--- a/mouse.260.el
+++ b/mouse.el
@@ -1916,6 +1916,71 @@ CLICK position, kill the secondary selection."
(> (length str) 0)
(gui-set-selection 'SECONDARY str))))
+(defun mouse-exchange-point-and-mark-secondary (&optional arg)
+ "Exchange the point and the mark, and the secondary selection.
+When the mark is active, this exchanges the point and the mark
+then creates the secondary selection from the primary selection.
+When the mark is not active but the secondary selection exists,
+this restores the primary selection from the secondary selection."
+ ;; (global-set-key [remap exchange-point-and-mark]
'mouse-exchange-point-and-mark-secondary)
+ (interactive "P")
+ (cond
+ ((region-active-p) ; Do not care pre-existing secondary.
+ (mouse-set-secondary-from-primary))
+ ((mouse-secondary-exists-p) ; When no primary exists.
+ (mouse-set-primary-from-secondary))
+ (t nil)) ; No primary and no secondary.
+ (exchange-point-and-mark arg))
+
+(defun mouse-secondary-exists-p ()
+ "Return if the secondary selection exists in current buffer.
+When exists, this returns start and end of the secondary selection."
+ (let ((buf (overlay-buffer mouse-secondary-overlay))
+ (beg (overlay-start mouse-secondary-overlay))
+ (end (overlay-end mouse-secondary-overlay)))
+ (when (and buf beg end
+ (equal buf (current-buffer))
+ (/= beg end))
+ (list beg end))))
+
+(defun mouse-set-primary-from-secondary ()
+ "Set the region to text in the secondary selection.
+This works when the secondary selection exists and the region
+does not exist in current buffer. The mouse-secondary-overlay
+will be deleted."
+ (interactive)
+ (let ((secondary-to-kill (and (not (region-active-p))
+ (mouse-secondary-exists-p))))
+ ;; Delete overlay even on different buffer.
+ ;; Deletion should be later than obtaining location.
+ (delete-overlay mouse-secondary-overlay)
+ (when secondary-to-kill
+ (let* ((pos0 (car secondary-to-kill))
+ (pos1 (cadr secondary-to-kill))
+ ;; Restore point to closer position.
+ (is-point-front (< (point) (/ (+ pos0 pos1) 2))))
+ (push-mark (if is-point-front pos1 pos0) t t)
+ (goto-char (if is-point-front pos0 pos1))))))
+
+(defun mouse-set-secondary-from-primary ()
+ "Set the secondary selection to text in the region.
+When region does not exists, set mouse-secondary-start to the point.
+When point is in the secondary selection, do nothing."
+ (interactive)
+ (cond
+ ((region-active-p) ; Create mouse-secondary-overlay from region.
+ (delete-overlay mouse-secondary-overlay)
+ (move-overlay mouse-secondary-overlay (region-beginning) (region-end)))
+ ((member 'secondary-selection ; Do nothing.
+ (mapcar (lambda (xxx) (overlay-get xxx 'face))
+ (overlays-at (point)))))
+ (t (delete-overlay mouse-secondary-overlay) ; Create mouse-secondary-start
from point.
+ (push-mark (point))
+ (setq mouse-secondary-start (make-marker))
+ (move-marker mouse-secondary-start (point)))))
+
(defcustom mouse-buffer-menu-maxlen 20
"Number of buffers in one pane (submenu) of the buffer menu.
- bug#27530: patch to cut and copy secondary,
Tak Kunihiro <=
bug#27530: patch to cut and copy secondary, Eli Zaretskii, 2017/09/05