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-;;; rectangular-region-mode.el
-
-;; Copyright (C) 2012-2016 Magnar Sveen
-
-;; Author: Magnar Sveen <magnars@gmail.com>
-;; Keywords: editing cursors
-
-;; This program is free software; you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-
-;; This program is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; (global-set-key (kbd "H-SPC") 'set-rectangular-region-anchor)
-
-;; Think of this one as `set-mark` except you're marking a rectangular region. It is
-;; an exceedingly quick way of adding multiple cursors to multiple lines.
-
-;;; Code:
-
-(require 'multiple-cursors-core)
-
-(defvar rrm/anchor (make-marker)
- "The position in the buffer that anchors the rectangular region.")
-
-(defvar rectangular-region-mode-map (make-sparse-keymap)
- "Keymap for rectangular region is mainly for rebinding C-g")
-
-(define-key rectangular-region-mode-map (kbd "C-g") 'rrm/keyboard-quit)
-(define-key rectangular-region-mode-map (kbd "<return>") 'rrm/switch-to-multiple-cursors)
-
-(defvar rectangular-region-mode nil)
-
-(defun rrm/keyboard-quit ()
- "Exit rectangular-region-mode."
- (interactive)
- (rectangular-region-mode 0)
- (rrm/remove-rectangular-region-overlays)
- (deactivate-mark))
-
-;; Bind this to a key (for instance H-SPC) to start rectangular-region-mode
-;;;###autoload
-(defun set-rectangular-region-anchor ()
- "Anchors the rectangular region at point.
-
-Think of this one as `set-mark' except you're marking a
-rectangular region. It is an exceedingly quick way of adding
-multiple cursors to multiple lines."
- (interactive)
- (set-marker rrm/anchor (point))
- (push-mark (point))
- (rectangular-region-mode 1))
-
-(defun rrm/remove-rectangular-region-overlays ()
- "Remove all rectangular-region overlays."
- (mc/remove-fake-cursors)
- (mapc #'(lambda (o)
- (when (eq (overlay-get o 'type) 'additional-region)
- (delete-overlay o)))
- (overlays-in (point-min) (point-max))))
-
-(defun rrm/repaint ()
- "Start from the anchor and draw a rectangle between it and point."
- (if (not rectangular-region-mode)
- (remove-hook 'post-command-hook 'rrm/repaint t)
- ;; else
- (rrm/remove-rectangular-region-overlays)
- (let* ((annoying-arrows-mode nil)
- (point-column (current-column))
- (point-line (mc/line-number-at-pos))
- (anchor-column (save-excursion (goto-char rrm/anchor) (current-column)))
- (anchor-line (save-excursion (goto-char rrm/anchor) (mc/line-number-at-pos)))
- (left-column (if (< point-column anchor-column) point-column anchor-column))
- (right-column (if (> point-column anchor-column) point-column anchor-column))
- (navigation-step (if (< point-line anchor-line) 1 -1)))
- (move-to-column anchor-column)
- (set-mark (point))
- (move-to-column point-column)
- (mc/save-excursion
- (while (not (= anchor-line (mc/line-number-at-pos)))
- (forward-line navigation-step)
- (move-to-column anchor-column)
- (when (= anchor-column (current-column))
- (set-mark (point))
- (move-to-column point-column)
- (when (= point-column (current-column))
- (mc/create-fake-cursor-at-point))))))))
-
-(defun rrm/switch-to-multiple-cursors (&rest forms)
- "Switch from rectangular-region-mode to multiple-cursors-mode."
- (interactive)
- (rectangular-region-mode 0)
- (multiple-cursors-mode 1))
-
-(defadvice er/expand-region (before switch-from-rrm-to-mc activate)
- (when rectangular-region-mode
- (rrm/switch-to-multiple-cursors)))
-
-(defadvice kill-ring-save (before switch-from-rrm-to-mc activate)
- (when rectangular-region-mode
- (rrm/switch-to-multiple-cursors)))
-
-;;;###autoload
-(define-minor-mode rectangular-region-mode
- "A mode for creating a rectangular region to edit"
- :init-value nil
- :lighter " rr"
- :keymap rectangular-region-mode-map
- (if rectangular-region-mode
- (progn
- (add-hook 'after-change-functions 'rrm/switch-to-multiple-cursors t t)
- (add-hook 'post-command-hook 'rrm/repaint t t))
- (remove-hook 'after-change-functions 'rrm/switch-to-multiple-cursors t)
- (remove-hook 'post-command-hook 'rrm/repaint t)
- (set-marker rrm/anchor nil)))
-
-(provide 'rectangular-region-mode)
-
-;;; rectangular-region-mode.el ends here