settings

Unnamed repository; edit this file 'description' to name the repository.
Log | Files | Refs

multiple-cursors-core.el (31949B)


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
;;; multiple-cursors-core.el --- An experiment in multiple cursors for emacs.

;; Copyright (C) 2012 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:

;; This file contains the core functionality of multiple-cursors.
;; Please see multiple-cursors.el for more commentary.

;;; Code:

(require 'cl)

(require 'rect)

(defvar mc--read-char)

(defface mc/cursor-face
  '((t (:inverse-video t)))
  "The face used for fake cursors"
  :group 'multiple-cursors)

(defface mc/region-face
  '((t :inherit region))
  "The face used for fake regions"
  :group 'multiple-cursors)

(defmacro mc/add-fake-cursor-to-undo-list (&rest forms)
  "Make sure point is in the right place when undoing"
  (let ((uc (make-symbol "undo-cleaner")))
    `(let ((,uc (cons 'apply (cons 'deactivate-cursor-after-undo (list id)))))
       (setq buffer-undo-list (cons ,uc buffer-undo-list))
       ,@forms
       (if (eq ,uc (car buffer-undo-list)) ;; if nothing has been added to the undo-list
           (setq buffer-undo-list (cdr buffer-undo-list)) ;; then pop the cleaner right off again
         (setq buffer-undo-list ;; otherwise add a function to activate this cursor
               (cons (cons 'apply (cons 'activate-cursor-for-undo (list id))) buffer-undo-list))))))

(defun mc/all-fake-cursors (&optional start end)
  (remove-if-not 'mc/fake-cursor-p
                 (overlays-in (or start (point-min))
                              (or end   (point-max)))))

(defmacro mc/for-each-fake-cursor (&rest forms)
  "Runs the body for each fake cursor, bound to the name cursor"
  `(mapc #'(lambda (cursor) ,@forms)
         (mc/all-fake-cursors)))

(defmacro mc/save-excursion (&rest forms)
  "Saves and restores all the state that multiple-cursors cares about."
  (let ((cs (make-symbol "current-state")))
    `(let ((,cs (mc/store-current-state-in-overlay
                 (make-overlay (point) (point) nil nil t))))
       (overlay-put ,cs 'type 'original-cursor)
       (save-excursion ,@forms)
       (mc/pop-state-from-overlay ,cs))))

(defun mc--compare-by-overlay-start (o1 o2)
  (< (overlay-start o1) (overlay-start o2)))

(defmacro mc/for-each-cursor-ordered (&rest forms)
  "Runs the body for each cursor, fake and real, bound to the name cursor"
  (let ((rci (make-symbol "real-cursor-id")))
    `(let ((,rci (overlay-get (mc/create-fake-cursor-at-point) 'mc-id)))
       (mapc #'(lambda (cursor)
                 (when (mc/fake-cursor-p cursor)
                   ,@forms))
             (sort (overlays-in (point-min) (point-max)) 'mc--compare-by-overlay-start))
       (mc/pop-state-from-overlay (mc/cursor-with-id ,rci)))))

(defmacro mc/save-window-scroll (&rest forms)
  "Saves and restores the window scroll position"
  (let ((p (make-symbol "p"))
        (s (make-symbol "start"))
        (h (make-symbol "hscroll")))
    `(let ((,p (set-marker (make-marker) (point)))
           (,s (set-marker (make-marker) (window-start)))
           (,h (window-hscroll)))
       ,@forms
       (goto-char ,p)
       (set-window-start nil ,s t)
       (set-window-hscroll nil ,h)
       (set-marker ,p nil)
       (set-marker ,s nil))))

(defun mc/make-cursor-overlay-at-eol (pos)
  "Create overlay to look like cursor at end of line."
  (let ((overlay (make-overlay pos pos nil nil nil)))
    (overlay-put overlay 'after-string (propertize " " 'face 'mc/cursor-face))
    overlay))

(defun mc/make-cursor-overlay-inline (pos)
  "Create overlay to look like cursor inside text."
  (let ((overlay (make-overlay pos (1+ pos) nil nil nil)))
    (overlay-put overlay 'face 'mc/cursor-face)
    overlay))

(defun mc/make-cursor-overlay-at-point ()
  "Create overlay to look like cursor.
Special case for end of line, because overlay over a newline
highlights the entire width of the window."
  (if (eolp)
      (mc/make-cursor-overlay-at-eol (point))
    (mc/make-cursor-overlay-inline (point))))

(defun mc/make-region-overlay-between-point-and-mark ()
  "Create overlay to look like active region."
  (let ((overlay (make-overlay (mark) (point) nil nil t)))
    (overlay-put overlay 'face 'mc/region-face)
    (overlay-put overlay 'type 'additional-region)
    overlay))

(defvar mc/cursor-specific-vars '(transient-mark-mode
                                  kill-ring
                                  kill-ring-yank-pointer
                                  mark-ring
                                  mark-active
                                  yank-undo-function
                                  autopair-action
                                  autopair-wrap-action
                                  er/history)
  "A list of vars that need to be tracked on a per-cursor basis.")

(defun mc/store-current-state-in-overlay (o)
  "Store relevant info about point and mark in the given overlay."
  (overlay-put o 'point (set-marker (make-marker) (point)))
  (overlay-put o 'mark (set-marker (make-marker) (mark)))
  (dolist (var mc/cursor-specific-vars)
    (when (boundp var) (overlay-put o var (symbol-value var))))
  o)

(defun mc/restore-state-from-overlay (o)
  "Restore point and mark from stored info in the given overlay."
  (goto-char (overlay-get o 'point))
  (set-marker (mark-marker) (overlay-get o 'mark))
  (dolist (var mc/cursor-specific-vars)
    (when (boundp var) (set var (overlay-get o var)))))

(defun mc/remove-fake-cursor (o)
  "Delete overlay with state, including dependent overlays and markers."
  (set-marker (overlay-get o 'point) nil)
  (set-marker (overlay-get o 'mark) nil)
  (mc/delete-region-overlay o)
  (delete-overlay o))

(defun mc/pop-state-from-overlay (o)
  "Restore the state stored in given overlay and then remove the overlay."
  (mc/restore-state-from-overlay o)
  (mc/remove-fake-cursor o))

(defun mc/delete-region-overlay (o)
  "Remove the dependent region overlay for a given cursor overlay."
  (ignore-errors
    (delete-overlay (overlay-get o 'region-overlay))))

(defvar mc--current-cursor-id 0
  "Var to store increasing id of fake cursors, used to keep track of them for undo.")

(defun mc/create-cursor-id ()
  "Returns a unique cursor id"
  (incf mc--current-cursor-id))

(defun mc/create-fake-cursor-at-point (&optional id)
  "Add a fake cursor and possibly a fake active region overlay based on point and mark.
Saves the current state in the overlay to be restored later."
  (let ((overlay (mc/make-cursor-overlay-at-point)))
    (overlay-put overlay 'mc-id (or id (mc/create-cursor-id)))
    (overlay-put overlay 'type 'fake-cursor)
    (overlay-put overlay 'priority 100)
    (mc/store-current-state-in-overlay overlay)
    (when (use-region-p)
      (overlay-put overlay 'region-overlay
                   (mc/make-region-overlay-between-point-and-mark)))
    overlay))

(defun mc/execute-command (cmd)
  "Run command, simulating the parts of the command loop that makes sense for fake cursors."
  (setq this-command cmd)
  (run-hooks 'pre-command-hook)
  (unless (eq this-command 'ignore)
    (call-interactively cmd))
  (run-hooks 'post-command-hook)
  (when deactivate-mark (deactivate-mark)))

(defvar mc--executing-command-for-fake-cursor nil)

(defun mc/execute-command-for-fake-cursor (cmd cursor)
  (let ((mc--executing-command-for-fake-cursor t)
        (id (overlay-get cursor 'mc-id))
        (annoying-arrows-mode nil)
        (smooth-scroll-margin 0))
    (mc/add-fake-cursor-to-undo-list
     (mc/pop-state-from-overlay cursor)
     (ignore-errors
       (mc/execute-command cmd)
       (mc/create-fake-cursor-at-point id)))))

(defun mc/execute-command-for-all-fake-cursors (cmd)
  "Calls CMD interactively for each cursor.
It works by moving point to the fake cursor, setting
up the proper environment, and then removing the cursor.
After executing the command, it sets up a new fake
cursor with updated info."
  (mc/save-excursion
   (mc/save-window-scroll
    (mc/for-each-fake-cursor
     (save-excursion
       (mc/execute-command-for-fake-cursor cmd cursor)))))
  (mc--reset-read-prompts))

(defun mc/execute-command-for-all-cursors (cmd)
  "Calls CMD interactively for the real cursor and all fakes."
  (call-interactively cmd)
  (mc/execute-command-for-all-fake-cursors cmd))

;; Intercept some reading commands so you won't have to
;; answer them for every single cursor

(defvar mc--read-char nil)
(defvar multiple-cursors-mode nil)
(defadvice read-char (around mc-support activate)
  (if (not multiple-cursors-mode)
      ad-do-it
    (unless mc--read-char
      (setq mc--read-char ad-do-it))
    (setq ad-return-value mc--read-char)))

(defvar mc--read-quoted-char nil)
(defadvice read-quoted-char (around mc-support activate)
  (if (not multiple-cursors-mode)
      ad-do-it
    (unless mc--read-quoted-char
      (setq mc--read-quoted-char ad-do-it))
    (setq ad-return-value mc--read-quoted-char)))

(defun mc--reset-read-prompts ()
  (setq mc--read-char nil)
  (setq mc--read-quoted-char nil))

(mc--reset-read-prompts)

(defun mc/fake-cursor-p (o)
  "Predicate to check if an overlay is a fake cursor"
  (eq (overlay-get o 'type) 'fake-cursor))

(defun mc/cursor-with-id (id)
  "Find the first cursor with the given id, or nil"
  (find-if #'(lambda (o) (and (mc/fake-cursor-p o)
                              (= id (overlay-get o 'mc-id))))
           (overlays-in (point-min) (point-max))))

(defvar mc--stored-state-for-undo nil
  "Variable to keep the state of the real cursor while undoing a fake one")

(defun activate-cursor-for-undo (id)
  "Called when undoing to temporarily activate the fake cursor which action is being undone."
  (let ((cursor (mc/cursor-with-id id)))
    (when cursor
      (setq mc--stored-state-for-undo (mc/store-current-state-in-overlay
                                       (make-overlay (point) (point) nil nil t)))
      (mc/pop-state-from-overlay cursor))))

(defun deactivate-cursor-after-undo (id)
  "Called when undoing to reinstate the real cursor after undoing a fake one."
  (when mc--stored-state-for-undo
    (mc/create-fake-cursor-at-point id)
    (mc/pop-state-from-overlay mc--stored-state-for-undo)
    (setq mc--stored-state-for-undo nil)))

(defun mc/prompt-for-inclusion-in-whitelist (original-command)
  "Asks the user, then adds the command either to the once-list or the all-list."
  (let ((all-p (y-or-n-p (format "Do %S for all cursors?" original-command))))
    (if all-p
        (add-to-list 'mc/cmds-to-run-for-all original-command)
      (add-to-list 'mc/cmds-to-run-once original-command))
    (mc/save-lists)
    all-p))

(defun mc/num-cursors ()
  "The number of cursors (real and fake) in the buffer."
  (1+ (count-if 'mc/fake-cursor-p
                (overlays-in (point-min) (point-max)))))

(defvar mc--this-command nil
  "Used to store the original command being run.")
(make-variable-buffer-local 'mc--this-command)

(defun mc/make-a-note-of-the-command-being-run ()
  "Used with pre-command-hook to store the original command being run.
Since that cannot be reliably determined in the post-command-hook.

Specifically, this-original-command isn't always right, because it could have
been remapped. And certain modes (cua comes to mind) will change their
remapping based on state. So a command that changes the state will afterwards
not be recognized through the command-remapping lookup."
  (unless mc--executing-command-for-fake-cursor
    (let ((cmd (or (command-remapping this-original-command)
                   this-original-command)))
      (setq mc--this-command (and (not (eq cmd 'god-mode-self-insert))
                                  cmd)))))

(defun mc/execute-this-command-for-all-cursors ()
  "Wrap around `mc/execute-this-command-for-all-cursors-1' to protect hook."
  (condition-case error
      (mc/execute-this-command-for-all-cursors-1)
    (error
     (message "[mc] problem in `mc/execute-this-command-for-all-cursors': %s"
              (error-message-string error)))))

;; execute-kbd-macro should never be run for fake cursors. The real cursor will
;; execute the keyboard macro, resulting in new commands in the command loop,
;; and the fake cursors can pick up on those instead.
(defadvice execute-kbd-macro (around skip-fake-cursors activate)
  (unless mc--executing-command-for-fake-cursor
    ad-do-it))

(defun mc/execute-this-command-for-all-cursors-1 ()
  "Used with post-command-hook to execute supported commands for all cursors.

It uses two lists of commands to know what to do: the run-once
list and the run-for-all list. If a command is in neither of these lists,
it will prompt for the proper action and then save that preference.

Some commands are so unsupported that they are even prevented for
the original cursor, to inform about the lack of support."
  (unless mc--executing-command-for-fake-cursor

    (if (eq 1 (mc/num-cursors)) ;; no fake cursors? disable mc-mode
        (multiple-cursors-mode 0)
      (when this-original-command
        (let ((original-command (or mc--this-command
                                    (command-remapping this-original-command)
                                    this-original-command)))

          ;; skip keyboard macros, since they will generate actual commands that are
          ;; also run in the command loop - we'll handle those later instead.
          (when (functionp original-command)

            ;; if it's a lambda, we can't know if it's supported or not
            ;; - so go ahead and assume it's ok, because we're just optimistic like that
            (if (or (not (symbolp original-command))
                    ;; lambda registered by smartrep
                    (string-prefix-p "(" (symbol-name original-command)))
                (mc/execute-command-for-all-fake-cursors original-command)

              ;; smartrep `intern's commands into own obarray to help
              ;; `describe-bindings'.  So, let's re-`intern' here to
              ;; make the command comparable by `eq'.
              (setq original-command (intern (symbol-name original-command)))

              ;; otherwise it's a symbol, and we can be more thorough
              (if (get original-command 'mc--unsupported)
                  (message "%S is not supported with multiple cursors%s"
                           original-command
                           (get original-command 'mc--unsupported))
                (when (and original-command
                           (not (memq original-command mc--default-cmds-to-run-once))
                           (not (memq original-command mc/cmds-to-run-once))
                           (or (memq original-command mc--default-cmds-to-run-for-all)
                               (memq original-command mc/cmds-to-run-for-all)
                               (mc/prompt-for-inclusion-in-whitelist original-command)))
                  (mc/execute-command-for-all-fake-cursors original-command))))))))))

(defun mc/remove-fake-cursors ()
  "Remove all fake cursors.
Do not use to conclude editing with multiple cursors. For that
you should disable multiple-cursors-mode."
  (mc/for-each-fake-cursor
   (mc/remove-fake-cursor cursor)))

(defun mc/keyboard-quit ()
  "Deactivate mark if there are any active, otherwise exit multiple-cursors-mode."
  (interactive)
  (if (not (use-region-p))
      (multiple-cursors-mode 0)
    (deactivate-mark)))

(defvar mc/keymap nil
  "Keymap while multiple cursors are active.
Main goal of the keymap is to rebind C-g and <return> to conclude
multiple cursors editing.")
(unless mc/keymap
  (setq mc/keymap (make-sparse-keymap))
  (define-key mc/keymap (kbd "C-g") 'mc/keyboard-quit)
  (define-key mc/keymap (kbd "<return>") 'multiple-cursors-mode)
  (when (fboundp 'phi-search)
    (define-key mc/keymap (kbd "C-s") 'phi-search))
  (when (fboundp 'phi-search-backward)
    (define-key mc/keymap (kbd "C-r") 'phi-search-backward)))

(defun mc--all-equal (list)
  "Are all the items in LIST equal?"
  (let ((first (car list))
        (all-equal t))
    (while (and all-equal list)
      (setq all-equal (equal first (car list)))
      (setq list (cdr list)))
    all-equal))

(defun mc--kill-ring-entries ()
  "Return the latest kill-ring entry for each cursor.
The entries are returned in the order they are found in the buffer."
  (let (entries)
    (mc/for-each-cursor-ordered
     (setq entries (cons (car (overlay-get cursor 'kill-ring)) entries)))
    (reverse entries)))

(defun mc--maybe-set-killed-rectangle ()
  "Add the latest kill-ring entry for each cursor to killed-rectangle.
So you can paste it in later with `yank-rectangle'."
  (let ((entries (mc--kill-ring-entries)))
    (unless (mc--all-equal entries)
      (setq killed-rectangle entries))))

(defvar mc/unsupported-minor-modes '(auto-complete-mode flyspell-mode)
  "List of minor-modes that does not play well with multiple-cursors.
They are temporarily disabled when multiple-cursors are active.")

(defvar mc/temporarily-disabled-minor-modes nil
  "The list of temporarily disabled minor-modes.")
(make-variable-buffer-local 'mc/temporarily-disabled-minor-modes)

(defun mc/temporarily-disable-minor-mode (mode)
  "If MODE is available and turned on, remember that and turn it off."
  (when (and (boundp mode) (eval mode))
    (add-to-list 'mc/temporarily-disabled-minor-modes mode)
    (funcall mode -1)))

(defun mc/temporarily-disable-unsupported-minor-modes ()
  (mapc 'mc/temporarily-disable-minor-mode mc/unsupported-minor-modes))

(defun mc/enable-minor-mode (mode)
  (funcall mode 1))

(defun mc/enable-temporarily-disabled-minor-modes ()
  (mapc 'mc/enable-minor-mode mc/temporarily-disabled-minor-modes)
  (setq mc/temporarily-disabled-minor-modes nil))

(defcustom mc/mode-line
  `(" mc:" (:eval (format ,(propertize "%d" 'face 'font-lock-warning-face)
                          (mc/num-cursors))))
  "What to display in the mode line while multiple-cursors-mode is active."
  :group 'multiple-cursors)
(put 'mc/mode-line 'risky-local-variable t)

(define-minor-mode multiple-cursors-mode
  "Mode while multiple cursors are active."
  nil mc/mode-line mc/keymap
  (if multiple-cursors-mode
      (progn
        (mc/temporarily-disable-unsupported-minor-modes)
        (add-hook 'pre-command-hook 'mc/make-a-note-of-the-command-being-run nil t)
        (add-hook 'post-command-hook 'mc/execute-this-command-for-all-cursors t t)
        (run-hooks 'multiple-cursors-mode-enabled-hook))
    (remove-hook 'post-command-hook 'mc/execute-this-command-for-all-cursors t)
    (remove-hook 'pre-command-hook 'mc/make-a-note-of-the-command-being-run t)
    (setq mc--this-command nil)
    (mc--maybe-set-killed-rectangle)
    (mc/remove-fake-cursors)
    (mc/enable-temporarily-disabled-minor-modes)
    (run-hooks 'multiple-cursors-mode-disabled-hook)))

(add-hook 'after-revert-hook #'(lambda () (multiple-cursors-mode 0)))

(defun mc/maybe-multiple-cursors-mode ()
  "Enable multiple-cursors-mode if there is more than one currently active cursor."
  (if (> (mc/num-cursors) 1)
      (multiple-cursors-mode 1)
    (multiple-cursors-mode 0)))

(defmacro unsupported-cmd (cmd msg)
  "Adds command to list of unsupported commands and prevents it
from being executed if in multiple-cursors-mode."
  `(progn
     (put (quote ,cmd) 'mc--unsupported ,msg)
     (defadvice ,cmd (around unsupported-advice activate)
       "command isn't supported with multiple cursors"
       (unless (and multiple-cursors-mode (called-interactively-p 'any))
         ad-do-it))))

;; Commands that does not work with multiple-cursors
(unsupported-cmd isearch-forward ". Feel free to add a compatible version.")
(unsupported-cmd isearch-backward ". Feel free to add a compatible version.")

;; Make sure pastes from other programs are added to all kill-rings when yanking
(defadvice current-kill (before interprogram-paste-for-all-cursors activate)
  (let ((interprogram-paste (and (= n 0)
                                 interprogram-paste-function
                                 (funcall interprogram-paste-function))))
    (when interprogram-paste
      ;; Add interprogram-paste to normal kill ring, just
      ;; like current-kill usually does for itself.
      ;; We have to do the work for it tho, since the funcall only returns
      ;; something once. It is not a pure function.
      (let ((interprogram-cut-function nil))
        (if (listp interprogram-paste)
            (mapc 'kill-new (nreverse interprogram-paste))
          (kill-new interprogram-paste))
        ;; And then add interprogram-paste to the kill-rings
        ;; of all the other cursors too.
        (mc/for-each-fake-cursor
         (let ((kill-ring (overlay-get cursor 'kill-ring))
               (kill-ring-yank-pointer (overlay-get cursor 'kill-ring-yank-pointer)))
           (if (listp interprogram-paste)
               (mapc 'kill-new (nreverse interprogram-paste))
             (kill-new interprogram-paste))
           (overlay-put cursor 'kill-ring kill-ring)
           (overlay-put cursor 'kill-ring-yank-pointer kill-ring-yank-pointer)))))))

(defvar mc/list-file "~/.emacs.d/.mc-lists.el"
  "The position of the file that keeps track of your preferences
for running commands with multiple cursors.")

(defun mc/dump-list (list-symbol)
  "Insert (setq 'LIST-SYMBOL LIST-VALUE) to current buffer."
  (symbol-macrolet ((value (symbol-value list-symbol)))
    (insert "(setq " (symbol-name list-symbol) "\n"
            "      '(")
    (newline-and-indent)
    (set list-symbol
         (sort value (lambda (x y) (string-lessp (symbol-name x)
                                                 (symbol-name y)))))
    (mapc #'(lambda (cmd) (insert (format "%S" cmd)) (newline-and-indent))
          value)
    (insert "))")
    (newline)))

(defun mc/save-lists ()
  "Saves preferences for running commands with multiple cursors to `mc/list-file'"
  (with-temp-file mc/list-file
    (emacs-lisp-mode)
    (insert ";; This file is automatically generated by the multiple-cursors extension.")
    (newline)
    (insert ";; It keeps track of your preferences for running commands with multiple cursors.")
    (newline)
    (newline)
    (mc/dump-list 'mc/cmds-to-run-for-all)
    (newline)
    (mc/dump-list 'mc/cmds-to-run-once)))

(defvar mc/cmds-to-run-once nil
  "Commands to run only once in multiple-cursors-mode.")

(defvar mc--default-cmds-to-run-once nil
  "Default set of commands to run only once in multiple-cursors-mode.")

(setq mc--default-cmds-to-run-once '(mc/edit-lines
                                     mc/edit-ends-of-lines
                                     mc/edit-beginnings-of-lines
                                     mc/mark-next-like-this
                                     mc/mark-next-word-like-this
                                     mc/mark-next-symbol-like-this
                                     mc/mark-previous-like-this
                                     mc/mark-previous-word-like-this
                                     mc/mark-previous-symbol-like-this
                                     mc/mark-all-like-this
                                     mc/mark-all-words-like-this
                                     mc/mark-all-symbols-like-this
                                     mc/mark-more-like-this-extended
                                     mc/mark-all-like-this-in-defun
                                     mc/mark-all-words-like-this-in-defun
                                     mc/mark-all-symbols-like-this-in-defun
                                     mc/mark-all-like-this-dwim
                                     mc/mark-all-dwim
                                     mc/mark-sgml-tag-pair
                                     mc/insert-numbers
                                     mc/sort-regions
                                     mc/reverse-regions
                                     mc/cycle-forward
                                     mc/cycle-backward
                                     mc/add-cursor-on-click
                                     mc/mark-pop
                                     mc/add-cursors-to-all-matches
                                     mc/mmlte--left
                                     mc/mmlte--right
                                     mc/mmlte--up
                                     mc/mmlte--down
                                     mc/unmark-next-like-this
                                     mc/unmark-previous-like-this
                                     mc/skip-to-next-like-this
                                     mc/skip-to-previous-like-this
                                     rrm/switch-to-multiple-cursors
                                     save-buffer
                                     ido-exit-minibuffer
                                     exit-minibuffer
                                     minibuffer-complete-and-exit
                                     execute-extended-command
                                     undo
                                     redo
                                     undo-tree-undo
                                     undo-tree-redo
                                     universal-argument
                                     universal-argument-more
                                     universal-argument-other-key
                                     negative-argument
                                     digit-argument
                                     top-level
                                     recenter-top-bottom
                                     describe-mode
                                     describe-key-1
                                     describe-function
                                     describe-bindings
                                     describe-prefix-bindings
                                     view-echo-area-messages
                                     other-window
                                     kill-buffer-and-window
                                     split-window-right
                                     split-window-below
                                     delete-other-windows
                                     toggle-window-split
                                     mwheel-scroll
                                     scroll-up-command
                                     scroll-down-command
                                     mouse-set-point
                                     mouse-drag-region
                                     quit-window
                                     toggle-read-only
                                     windmove-left
                                     windmove-right
                                     windmove-up
                                     windmove-down))

(defvar mc--default-cmds-to-run-for-all nil
  "Default set of commands that should be mirrored by all cursors")

(setq mc--default-cmds-to-run-for-all '(mc/keyboard-quit
                                        self-insert-command
                                        quoted-insert
                                        previous-line
                                        next-line
                                        newline
                                        newline-and-indent
                                        open-line
                                        delete-blank-lines
                                        transpose-chars
                                        transpose-lines
                                        transpose-paragraphs
                                        transpose-regions
                                        join-line
                                        right-char
                                        right-word
                                        forward-char
                                        forward-word
                                        left-char
                                        left-word
                                        backward-char
                                        backward-word
                                        forward-paragraph
                                        backward-paragraph
                                        upcase-word
                                        downcase-word
                                        capitalize-word
                                        forward-list
                                        backward-list
                                        hippie-expand
                                        hippie-expand-lines
                                        yank
                                        yank-pop
                                        append-next-kill
                                        kill-word
                                        kill-line
                                        kill-whole-line
                                        backward-kill-word
                                        backward-delete-char-untabify
                                        delete-char delete-forward-char
                                        delete-backward-char
                                        py-electric-backspace
                                        c-electric-backspace
                                        org-delete-backward-char
                                        python-indent-dedent-line-backspace
                                        paredit-backward-delete
                                        autopair-backspace
                                        just-one-space
                                        zap-to-char
                                        end-of-line
                                        set-mark-command
                                        exchange-point-and-mark
                                        cua-set-mark
                                        cua-replace-region
                                        move-end-of-line
                                        beginning-of-line
                                        move-beginning-of-line
                                        kill-ring-save
                                        back-to-indentation
                                        subword-forward
                                        subword-backward
                                        subword-mark
                                        subword-kill
                                        subword-backward-kill
                                        subword-transpose
                                        subword-capitalize
                                        subword-upcase
                                        subword-downcase
                                        er/expand-region
                                        er/contract-region
                                        smart-forward
                                        smart-backward
                                        smart-up
                                        smart-down))

(defvar mc/cmds-to-run-for-all nil
  "Commands to run for all cursors in multiple-cursors-mode")

(load mc/list-file t) ;; load, but no errors if it does not exist yet please

(provide 'multiple-cursors-core)

;; Local Variables:
;; coding: utf-8
;; byte-compile-warnings: (not cl-functions)
;; End:

;;; multiple-cursors-core.el ends here