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63 lines
2 KiB
EmacsLisp
63 lines
2 KiB
EmacsLisp
;;; wormhole-cut-mode.el --- -*- lexical-binding: t -*-
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;; Copyright (C) 2020 Benson Chu
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;; Author: Benson Chu <bensonchu457@gmail.com>
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;; Created: [2020-09-16 14:27]
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;; This file is not part of GNU Emacs
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;; This program is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(defvar wormhole-cut-mode-map
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(let ((map (make-sparse-keymap)))
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(define-key map (kbd "C-w") #'wormhole-cut)
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(define-key map (kbd "C-c SPC") #'wormhole-reset-point)
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map))
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(defvar wormhole-egress-marker nil)
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(defvar wormhole-egress-overlay nil)
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(defun wormhole-make-overlay ()
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(let ((overlay (make-overlay (point) (1+ (point)))))
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(overlay-put overlay 'face '(:background "green"))
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overlay))
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(defun wormhole-reset-point ()
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(interactive)
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(move-marker wormhole-egress-marker (point))
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(move-overlay wormhole-egress-overlay (point) (1+ (point))))
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(defun wormhole-cut ()
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(interactive)
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(kill-region (mark) (point) 'region)
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(save-excursion
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(goto-char (marker-position wormhole-egress-marker))
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(yank)
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(wormhole-reset-point)))
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(define-minor-mode wormhole-cut-mode ""
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nil nil wormhole-cut-mode-map
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(if wormhole-cut-mode
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(setq wormhole-egress-marker (point-marker)
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wormhole-egress-overlay (wormhole-make-overlay))
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(setq wormhole-egress-marker nil)
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(delete-overlay wormhole-egress-overlay)))
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(provide 'wormhole-cut-mode)
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;;; wormhole-cut-mode.el ends here
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