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https://github.com/magnars/multiple-cursors.el.git
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fcbb7a4df9
Instead of erroring if there is no next (respectively previous) cursor mc/cycle-forward (respectively mc/cycle-backward) will just loop back to the first (respectively last) cursor.
89 lines
2.7 KiB
EmacsLisp
89 lines
2.7 KiB
EmacsLisp
;;; mc-cycle-cursors.el
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;; Copyright (C) 2012 Magnar Sveen
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;; Author: Magnar Sveen <magnars@gmail.com>
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;; Keywords: editing cursors
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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 <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This scrolls the buffer to center each cursor in turn.
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;; Scroll down with C-v, scroll up with M-v
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;; This is nice when you have cursors that's outside of your view.
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;;; Code:
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(require 'multiple-cursors-core)
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(eval-when-compile (require 'cl))
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(defun mc/next-cursor-after-point ()
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(let ((pos (point))
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(next-pos (point-max))
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next)
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(mc/for-each-fake-cursor
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(let ((cursor-pos (overlay-get cursor 'point)))
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(when (and (< pos cursor-pos)
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(< cursor-pos next-pos))
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(setq next-pos cursor-pos)
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(setq next cursor))))
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next))
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(defun mc/prev-cursor-before-point ()
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(let ((pos (point))
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(prev-pos (point-min))
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prev)
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(mc/for-each-fake-cursor
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(let ((cursor-pos (overlay-get cursor 'point)))
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(when (and (> pos cursor-pos)
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(> cursor-pos prev-pos))
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(setq prev-pos cursor-pos)
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(setq prev cursor))))
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prev))
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(defun mc/cycle-forward (&optional error-if-no-next-cursor)
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(interactive (list prefix-arg))
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(let ((next-cursor (mc/next-cursor-after-point)))
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(cond
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(next-cursor
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(mc/create-fake-cursor-at-point)
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(mc/pop-state-from-overlay next-cursor)
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(recenter))
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(error-if-no-next-cursor
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(error "We're already at the last cursor"))
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(t
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(mc/cycle-backward t)))))
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(defun mc/cycle-backward (&optional error-if-no-previous-cursor)
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(interactive (list prefix-arg))
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(let ((prev-cursor (mc/prev-cursor-before-point)))
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(cond
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(prev-cursor
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(mc/create-fake-cursor-at-point)
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(mc/pop-state-from-overlay prev-cursor)
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(recenter))
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(error-if-no-previous-cursor
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(error "We're already at the first cursor"))
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(t
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(mc/cycle-forward t)))))
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(define-key mc/keymap (kbd "C-v") 'mc/cycle-forward)
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(define-key mc/keymap (kbd "M-v") 'mc/cycle-backward)
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(provide 'mc-cycle-cursors)
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;;; mc-cycle-cursors.el ends here
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