all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob 9f8cdce4a214ea8f565f2a1ff53e0eecb72b61eb 27884 bytes (raw)
name: lisp/buff-menu.el 	 # note: path name is non-authoritative(*)

  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
 
;;; buff-menu.el --- Interface for viewing and manipulating buffers -*- lexical-binding: t -*-

;; Copyright (C) 1985-1987, 1993-1995, 2000-2020 Free Software
;; Foundation, Inc.

;; Maintainer: emacs-devel@gnu.org
;; Keywords: convenience
;; Package: emacs

;; This file is part of GNU Emacs.

;; GNU Emacs 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.

;; GNU Emacs 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 GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; The Buffer Menu is used to view, edit, delete, or change attributes
;; of buffers.  The entry points are C-x C-b (`list-buffers') and
;; M-x buffer-menu.

;;; Code:

(require 'tabulated-list)

(defgroup Buffer-menu nil
  "Show a menu of all buffers in a buffer."
  :group 'tools
  :group 'convenience)

(defvar Buffer-menu-marker-char ?>
  "The mark character for marked buffers.")

(defvar Buffer-menu-del-char ?D
  "Character used to flag buffers for deletion.")

(defcustom Buffer-menu-use-header-line t
  "If non-nil, use the header line to display Buffer Menu column titles."
  :type 'boolean
  :group 'Buffer-menu)

(defface buffer-menu-buffer
  '((t (:weight bold)))
  "Face for buffer names in the Buffer Menu."
  :group 'Buffer-menu)
(put 'Buffer-menu-buffer 'face-alias 'buffer-menu-buffer)

(defcustom Buffer-menu-buffer+size-width nil
  "Combined width of buffer name and size columns in Buffer Menu.
If nil, use `Buffer-menu-name-width' and `Buffer-menu-size-width'.

If non-nil, the value of `Buffer-menu-name-width' is overridden;
the name column is assigned width `Buffer-menu-buffer+size-width'
minus `Buffer-menu-size-width'.  This use is deprecated."
  :type '(choice (const nil) number)
  :group 'Buffer-menu
  :version "24.3")

(make-obsolete-variable 'Buffer-menu-buffer+size-width
			"use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead."
			"24.3")

(defcustom Buffer-menu-name-width 19
  "Width of buffer name column in the Buffer Menu."
  :type 'number
  :group 'Buffer-menu
  :version "24.3")

(defcustom Buffer-menu-size-width 7
  "Width of buffer size column in the Buffer Menu."
  :type 'number
  :group 'Buffer-menu
  :version "24.3")

(defcustom Buffer-menu-mode-width 16
  "Width of mode name column in the Buffer Menu."
  :type 'number
  :group 'Buffer-menu)

(defcustom Buffer-menu-use-frame-buffer-list t
  "If non-nil, the Buffer Menu uses the selected frame's buffer list.
Buffers that were never selected in that frame are listed at the end.
If the value is nil, the Buffer Menu uses the global buffer list.
This variable matters if the Buffer Menu is sorted by visited order,
as it is by default."
  :type 'boolean
  :group 'Buffer-menu
  :version "22.1")

(defvar Buffer-menu-files-only nil
  "Non-nil if the current Buffer Menu lists only file buffers.
This is set by the prefix argument to `buffer-menu' and related
commands.")
(make-variable-buffer-local 'Buffer-menu-files-only)

(defvar Buffer-menu-mode-map
  (let ((map (make-sparse-keymap))
	(menu-map (make-sparse-keymap)))
    (set-keymap-parent map tabulated-list-mode-map)
    (define-key map "v" 'Buffer-menu-select)
    (define-key map "2" 'Buffer-menu-2-window)
    (define-key map "1" 'Buffer-menu-1-window)
    (define-key map "f" 'Buffer-menu-this-window)
    (define-key map "e" 'Buffer-menu-this-window)
    (define-key map "\C-m" 'Buffer-menu-this-window)
    (define-key map "o" 'Buffer-menu-other-window)
    (define-key map "\C-o" 'Buffer-menu-switch-other-window)
    (define-key map "s" 'Buffer-menu-save)
    (define-key map "d" 'Buffer-menu-delete)
    (define-key map "k" 'Buffer-menu-delete)
    (define-key map "\C-k" 'Buffer-menu-delete)
    (define-key map "\C-d" 'Buffer-menu-delete-backwards)
    (define-key map "x" 'Buffer-menu-execute)
    (define-key map " " 'next-line)
    (define-key map "\177" 'Buffer-menu-backup-unmark)
    (define-key map "~" 'Buffer-menu-not-modified)
    (define-key map "u" 'Buffer-menu-unmark)
    (define-key map "\M-\177" 'Buffer-menu-unmark-all-buffers)
    (define-key map "U" 'Buffer-menu-unmark-all)
    (define-key map "m" 'Buffer-menu-mark)
    (define-key map "t" 'Buffer-menu-visit-tags-table)
    (define-key map "%" 'Buffer-menu-toggle-read-only)
    (define-key map "b" 'Buffer-menu-bury)
    (define-key map "V" 'Buffer-menu-view)
    (define-key map "T" 'Buffer-menu-toggle-files-only)
    (define-key map (kbd "M-s a C-s")   'Buffer-menu-isearch-buffers)
    (define-key map (kbd "M-s a M-C-s") 'Buffer-menu-isearch-buffers-regexp)
    (define-key map (kbd "M-s a C-o") 'Buffer-menu-multi-occur)

    (define-key map [mouse-2] 'Buffer-menu-mouse-select)
    (define-key map [follow-link] 'mouse-face)

    (define-key map [menu-bar Buffer-menu-mode] (cons (purecopy "Buffer-Menu") menu-map))
    (bindings--define-key menu-map [quit]
      '(menu-item "Quit" quit-window
		 :help "Remove the buffer menu from the display"))
    (bindings--define-key menu-map [rev]
      '(menu-item "Refresh" revert-buffer
		 :help "Refresh the *Buffer List* buffer contents"))
    (bindings--define-key menu-map [s0] menu-bar-separator)
    (bindings--define-key menu-map [tf]
      '(menu-item "Show Only File Buffers" Buffer-menu-toggle-files-only
		  :button (:toggle . Buffer-menu-files-only)
		  :help "Toggle whether the current buffer-menu displays only file buffers"))
    (bindings--define-key menu-map [s1] menu-bar-separator)
    ;; FIXME: The "Select" entries could use better names...
    (bindings--define-key menu-map [sel]
      '(menu-item "Select Marked" Buffer-menu-select
		 :help "Select this line's buffer; also display buffers marked with `>'"))
    (bindings--define-key menu-map [bm2]
      '(menu-item "Select Two" Buffer-menu-2-window
		 :help "Select this line's buffer, with previous buffer in second window"))
    (bindings--define-key menu-map [bm1]
      '(menu-item "Select Current" Buffer-menu-1-window
		 :help "Select this line's buffer, alone, in full frame"))
    (bindings--define-key menu-map [ow]
      '(menu-item "Select in Other Window" Buffer-menu-other-window
		 :help "Select this line's buffer in other window, leaving buffer menu visible"))
    (bindings--define-key menu-map [tw]
      '(menu-item "Select in Current Window" Buffer-menu-this-window
		 :help "Select this line's buffer in this window"))
    (bindings--define-key menu-map [s2] menu-bar-separator)
    (bindings--define-key menu-map [is]
      '(menu-item "Regexp Isearch Marked Buffers..." Buffer-menu-isearch-buffers-regexp
		 :help "Search for a regexp through all marked buffers using Isearch"))
    (bindings--define-key menu-map [ir]
      '(menu-item "Isearch Marked Buffers..." Buffer-menu-isearch-buffers
		 :help "Search for a string through all marked buffers using Isearch"))
    (bindings--define-key menu-map [mo]
      '(menu-item "Multi Occur Marked Buffers..." Buffer-menu-multi-occur
		 :help "Show lines matching a regexp in marked buffers using Occur"))
    (bindings--define-key menu-map [s3] menu-bar-separator)
    (bindings--define-key menu-map [by]
      '(menu-item "Bury" Buffer-menu-bury
		 :help "Bury the buffer listed on this line"))
    (bindings--define-key menu-map [vt]
      '(menu-item "Set Unmodified" Buffer-menu-not-modified
		 :help "Mark buffer on this line as unmodified (no changes to save)"))
    (bindings--define-key menu-map [ex]
      '(menu-item "Execute" Buffer-menu-execute
		 :help "Save and/or delete buffers marked with s or k commands"))
    (bindings--define-key menu-map [s4] menu-bar-separator)
    (bindings--define-key menu-map [delb]
      '(menu-item "Mark for Delete and Move Backwards" Buffer-menu-delete-backwards
		 :help "Mark buffer on this line to be deleted by x command and move up one line"))
    (bindings--define-key menu-map [del]
      '(menu-item "Mark for Delete" Buffer-menu-delete
		 :help "Mark buffer on this line to be deleted by x command"))

    (bindings--define-key menu-map [sv]
      '(menu-item "Mark for Save" Buffer-menu-save
		 :help "Mark buffer on this line to be saved by x command"))
    (bindings--define-key menu-map [umk]
      '(menu-item "Unmark" Buffer-menu-unmark
		 :help "Cancel all requested operations on buffer on this line and move down"))
    (bindings--define-key menu-map [umkab]
      '(menu-item "Remove marks..." Buffer-menu-unmark-all-buffers
                  :help "Cancel a requested operation on all buffers"))
    (bindings--define-key menu-map [umka]
      '(menu-item "Unmark all" Buffer-menu-unmark-all
                  :help "Cancel all requested operations on buffers"))
    (bindings--define-key menu-map [mk]
      '(menu-item "Mark" Buffer-menu-mark
		 :help "Mark buffer on this line for being displayed by v command"))
    map)
  "Local keymap for `Buffer-menu-mode' buffers.")

(define-derived-mode Buffer-menu-mode tabulated-list-mode "Buffer Menu"
  "Major mode for Buffer Menu buffers.
The Buffer Menu is invoked by the commands \\[list-buffers],
\\[buffer-menu], and \\[buffer-menu-other-window].
See `buffer-menu' for a description of its contents.

In Buffer Menu mode, the following commands are defined:
\\<Buffer-menu-mode-map>
\\[quit-window]    Remove the Buffer Menu from the display.
\\[Buffer-menu-this-window]  Select current line's buffer in place of the buffer menu.
\\[Buffer-menu-other-window]    Select that buffer in another window,
     so the Buffer Menu remains visible in its window.
\\[Buffer-menu-view]    Select current line's buffer, in View mode.
\\[Buffer-menu-view-other-window]  Select that buffer in
     another window, in view-mode.
\\[Buffer-menu-switch-other-window]  Make another window display that buffer.
\\[Buffer-menu-mark]    Mark current line's buffer to be displayed.
\\[Buffer-menu-select]    Select current line's buffer.
     Also show buffers marked with m, in other windows.
\\[Buffer-menu-1-window]    Select that buffer in full-frame window.
\\[Buffer-menu-2-window]    Select that buffer in one window, together with the
     buffer selected before this one in another window.
\\[Buffer-menu-isearch-buffers]    Incremental search in the marked buffers.
\\[Buffer-menu-isearch-buffers-regexp]  Isearch for regexp in the marked buffers.
\\[Buffer-menu-multi-occur] Show lines matching regexp in the marked buffers.
\\[Buffer-menu-visit-tags-table]    visit-tags-table this buffer.
\\[Buffer-menu-not-modified]    Clear modified-flag on that buffer.
\\[Buffer-menu-save]    Mark that buffer to be saved, and move down.
\\[Buffer-menu-delete]  Mark that buffer to be deleted, and move down.
\\[Buffer-menu-delete-backwards]  Mark that buffer to be deleted, and move up.
\\[Buffer-menu-execute]    Delete or save marked buffers.
\\[Buffer-menu-unmark]    Remove all marks from current line.
     With prefix argument, also move up one line.
\\[Buffer-menu-unmark-all-buffers]    Remove a particular mark from all lines.
\\[Buffer-menu-unmark-all]    Remove all marks from all lines.
\\[Buffer-menu-backup-unmark]  Back up a line and remove marks.
\\[Buffer-menu-toggle-read-only]    Toggle read-only status of buffer on this line.
\\[revert-buffer]    Update the list of buffers.
\\[Buffer-menu-toggle-files-only]    Toggle whether the menu displays only file buffers.
\\[Buffer-menu-bury]    Bury the buffer listed on this line."
  (set (make-local-variable 'buffer-stale-function)
       (lambda (&optional _noconfirm) 'fast))
  (add-hook 'tabulated-list-revert-hook 'list-buffers--refresh nil t))

(defun buffer-menu (&optional arg)
  "Switch to the Buffer Menu.
By default, the Buffer Menu lists all buffers except those whose
names start with a space (which are for internal use).  With
prefix argument ARG, show only buffers that are visiting files.

In the Buffer Menu, the first column (denoted \"C\") shows \".\"
for the buffer from which you came, \">\" for buffers you mark to
be displayed, and \"D\" for those you mark for deletion.

The \"R\" column has a \"%\" if the buffer is read-only.
The \"M\" column has a \"*\" if it is modified, or \"S\" if you
have marked it for saving.

The remaining columns show the buffer name, the buffer size in
characters, its major mode, and the visited file name (if any).

See `Buffer-menu-mode' for the keybindings available the Buffer
Menu.

The width of the various columns can be customized by changing
the `Buffer-menu-name-width', `Buffer-menu-size-width' and
`Buffer-menu-mode-width' variables."
  (interactive "P")
  (switch-to-buffer (list-buffers-noselect arg))
  (message
   "Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %%; q to quit; ? for help."))

(defun buffer-menu-other-window (&optional arg)
  "Display the Buffer Menu in another window.
See `buffer-menu' for a description of the Buffer Menu.

By default, all buffers are listed except those whose names start
with a space (which are for internal use).  With prefix argument
ARG, show only buffers that are visiting files."
  (interactive "P")
  (switch-to-buffer-other-window (list-buffers-noselect arg))
  (message
   "Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %%; q to quit; ? for help."))

;;;###autoload
(defun list-buffers (&optional arg)
  "Display a list of existing buffers.
The list is displayed in a buffer named \"*Buffer List*\".
See `buffer-menu' for a description of the Buffer Menu.

By default, all buffers are listed except those whose names start
with a space (which are for internal use).  With prefix argument
ARG, show only buffers that are visiting files."
  (interactive "P")
  (display-buffer (list-buffers-noselect arg)))

(defun Buffer-menu-toggle-files-only (arg)
  "Toggle whether the current buffer-menu displays only file buffers.
With a positive ARG, display only file buffers.  With zero or
negative ARG, display other buffers as well."
  (interactive "P")
  (setq Buffer-menu-files-only
	(cond ((not arg) (not Buffer-menu-files-only))
	      ((> (prefix-numeric-value arg) 0) t)))
  (message (if Buffer-menu-files-only
	       "Showing only file-visiting buffers."
	     "Showing all non-internal buffers."))
  (revert-buffer))

(defalias 'Buffer-menu-sort 'tabulated-list-sort)
\f

(defun Buffer-menu-buffer (&optional error-if-non-existent-p)
  "Return the buffer described by the current Buffer Menu line.
If there is no buffer here, return nil if ERROR-IF-NON-EXISTENT-P
is nil or omitted, and signal an error otherwise."
  (let ((buffer (tabulated-list-get-id)))
    (cond ((null buffer)
	   (if error-if-non-existent-p
	       (error "No buffer on this line")))
	  ((not (buffer-live-p buffer))
	   (if error-if-non-existent-p
	       (error "This buffer has been killed")))
	  (t buffer))))

(defun Buffer-menu-no-header ()
  (beginning-of-line)
  (if (or Buffer-menu-use-header-line
	  (not (tabulated-list-header-overlay-p (point))))
      t
    (ding)
    (forward-line 1)
    nil))

(defun Buffer-menu-beginning ()
  (goto-char (point-min))
  (unless Buffer-menu-use-header-line
    (forward-line)))

\f
;;; Commands for modifying Buffer Menu entries.

(defun Buffer-menu-mark ()
  "Mark the Buffer menu entry at point for later display.
It will be displayed by the \\<Buffer-menu-mode-map>\\[Buffer-menu-select] command."
  (interactive)
  (tabulated-list-set-col 0 (char-to-string Buffer-menu-marker-char) t)
  (forward-line))

(defun Buffer-menu-unmark (&optional backup)
  "Cancel all requested operations on buffer on this line and move down.
Optional prefix arg means move up."
  (interactive "P")
  (Buffer-menu--unmark)
  (forward-line (if backup -1 1)))

(defun Buffer-menu-unmark-all-buffers (mark)
  "Cancel a requested operation on all buffers.
MARK is the character to flag the operation on the buffers.
When called interactively prompt for MARK;  RET remove all marks."
  (interactive "cRemove marks (RET means all):")
  (save-excursion
    (goto-char (point-min))
    (when (tabulated-list-header-overlay-p)
      (forward-line))
    (while (not (eobp))
      (let ((xmarks (list (aref (tabulated-list-get-entry) 0)
                          (aref (tabulated-list-get-entry) 2))))
        (when (or (char-equal mark ?\r)
                  (member (char-to-string mark) xmarks))
          (Buffer-menu--unmark)))
      (forward-line))))

(defun Buffer-menu-unmark-all ()
  "Cancel all requested operations on buffers."
  (interactive)
  (Buffer-menu-unmark-all-buffers ?\r))

(defun Buffer-menu-backup-unmark ()
  "Move up and cancel all requested operations on buffer on line above."
  (interactive)
  (forward-line -1)
  (Buffer-menu--unmark))

(defun Buffer-menu--unmark ()
  (tabulated-list-set-col 0 " " t)
  (let ((buf (Buffer-menu-buffer)))
    (when buf
      (if (buffer-modified-p buf)
          (tabulated-list-set-col 2 "*" t)
        (tabulated-list-set-col 2 " " t)))))

(defun Buffer-menu-delete (&optional arg)
  "Mark the buffer on this Buffer Menu buffer line for deletion.
A subsequent \\<Buffer-menu-mode-map>`\\[Buffer-menu-execute]' command
will delete it.

If prefix argument ARG is non-nil, it specifies the number of
buffers to delete; a negative ARG means to delete backwards."
  (interactive "p")
  (if (or (null arg) (= arg 0))
      (setq arg 1))
  (while (> arg 0)
    (when (Buffer-menu-buffer)
      (tabulated-list-set-col 0 (char-to-string Buffer-menu-del-char) t))
    (forward-line 1)
    (setq arg (1- arg)))
  (while (< arg 0)
    (when (Buffer-menu-buffer)
      (tabulated-list-set-col 0 (char-to-string Buffer-menu-del-char) t))
    (forward-line -1)
    (setq arg (1+ arg))))

(defun Buffer-menu-delete-backwards (&optional arg)
  "Mark the buffer on this Buffer Menu line for deletion, and move up.
A subsequent \\<Buffer-menu-mode-map>`\\[Buffer-menu-execute]'
command will delete the marked buffer.  Prefix ARG means move
that many lines."
  (interactive "p")
  (Buffer-menu-delete (- (or arg 1))))

(defun Buffer-menu-save ()
  "Mark the buffer on this Buffer Menu line for saving.
A subsequent \\<Buffer-menu-mode-map>`\\[Buffer-menu-execute]' command
will save it."
  (interactive)
  (when (Buffer-menu-buffer)
    (tabulated-list-set-col 2 "S" t)
    (forward-line 1)))

(defun Buffer-menu-not-modified (&optional arg)
  "Mark the buffer on this line as unmodified (no changes to save).
If ARG is non-nil (interactively, with a prefix argument), mark
it as modified."
  (interactive "P")
  (with-current-buffer (Buffer-menu-buffer t)
    (set-buffer-modified-p arg))
  (tabulated-list-set-col 2 (if arg "*" " ") t))

(defun Buffer-menu-execute ()
  "Save and/or delete marked buffers in the Buffer Menu.
Buffers marked with \\<Buffer-menu-mode-map>`\\[Buffer-menu-save]' are saved.
Buffers marked with \\<Buffer-menu-mode-map>`\\[Buffer-menu-delete]' are deleted."
  (interactive)
  (save-excursion
    (Buffer-menu-beginning)
    (while (not (eobp))
      (let ((buffer (tabulated-list-get-id))
	    (entry  (tabulated-list-get-entry)))
	(cond ((null entry)
	       (forward-line 1))
	      ((not (buffer-live-p buffer))
	       (tabulated-list-delete-entry))
	      (t
	       (let ((delete (eq (char-after) ?D)))
		 (when (equal (aref entry 2) "S")
		   (condition-case nil
		       (progn
			 (with-current-buffer buffer
			   (save-buffer))
			 (tabulated-list-set-col 2 " " t))
		     (error (warn "Error saving %s" buffer))))
		 (if (and delete
			  (not (eq buffer (current-buffer)))
                          (kill-buffer buffer))
                     (tabulated-list-delete-entry)
		   (forward-line 1)))))))))

(defun Buffer-menu-select ()
  "Select this line's buffer; also, display buffers marked with `>'.
You can mark buffers with the \\<Buffer-menu-mode-map>`\\[Buffer-menu-mark]' command.
This command deletes and replaces all the previously existing windows
in the selected frame."
  (interactive)
  (let* ((this-buffer (Buffer-menu-buffer t))
	 (menu-buffer (current-buffer))
	 (others (delq this-buffer (Buffer-menu-marked-buffers t)))
	 (height (/ (1- (frame-height)) (1+ (length others)))))
    (delete-other-windows)
    (switch-to-buffer this-buffer)
    (unless (eq menu-buffer this-buffer)
      (bury-buffer menu-buffer))
    (dolist (buffer others)
      (split-window nil height)
      (other-window 1)
      (switch-to-buffer buffer))
    ;; Back to the beginning!
    (other-window 1)))

(defun Buffer-menu-marked-buffers (&optional unmark)
  "Return the list of buffers marked with `Buffer-menu-mark'.
If UNMARK is non-nil, unmark them."
  (let (buffers)
    (Buffer-menu-beginning)
    (while (re-search-forward "^>" nil t)
      (let ((buffer (Buffer-menu-buffer)))
	(if (and buffer unmark)
	    (tabulated-list-set-col 0 " " t))
	(if (buffer-live-p buffer)
	    (push buffer buffers))))
    (nreverse buffers)))

(defun Buffer-menu-isearch-buffers ()
  "Search for a string through all marked buffers using Isearch."
  (interactive)
  (multi-isearch-buffers (Buffer-menu-marked-buffers)))

(defun Buffer-menu-isearch-buffers-regexp ()
  "Search for a regexp through all marked buffers using Isearch."
  (interactive)
  (multi-isearch-buffers-regexp (Buffer-menu-marked-buffers)))

(defun Buffer-menu-multi-occur (regexp &optional nlines)
  "Show all lines in marked buffers containing a match for a regexp."
  (interactive (occur-read-primary-args))
  (multi-occur (Buffer-menu-marked-buffers) regexp nlines))

\f
(defun Buffer-menu-visit-tags-table ()
  "Visit the tags table in the buffer on this line.  See `visit-tags-table'."
  (interactive)
  (let ((file (buffer-file-name (Buffer-menu-buffer t))))
    (if file
	(visit-tags-table file)
      (error "Specified buffer has no file"))))

(defun Buffer-menu-1-window ()
  "Select this line's buffer, alone, in full frame."
  (interactive)
  (switch-to-buffer (Buffer-menu-buffer t))
  (bury-buffer (other-buffer))
  (delete-other-windows))

(defun Buffer-menu-this-window ()
  "Select this line's buffer in this window."
  (interactive)
  (switch-to-buffer (Buffer-menu-buffer t)))

(defun Buffer-menu-other-window ()
  "Select this line's buffer in other window, leaving buffer menu visible."
  (interactive)
  (switch-to-buffer-other-window (Buffer-menu-buffer t)))

(defun Buffer-menu-switch-other-window ()
  "Make the other window select this line's buffer.
The current window remains selected."
  (interactive)
  (display-buffer (Buffer-menu-buffer t) t))

(defun Buffer-menu-2-window ()
  "Select this line's buffer, with previous buffer in second window."
  (interactive)
  (let ((buff (Buffer-menu-buffer t))
	(menu (current-buffer)))
    (delete-other-windows)
    (switch-to-buffer (other-buffer))
    (switch-to-buffer-other-window buff)
    (bury-buffer menu)))

(defun Buffer-menu-toggle-read-only ()
  "Toggle read-only status of buffer on this line.
This behaves like invoking \\[read-only-mode] in that buffer."
  (interactive)
  (let ((read-only
         (with-current-buffer (Buffer-menu-buffer t)
           (read-only-mode 'toggle)
           buffer-read-only)))
    (tabulated-list-set-col 1 (if read-only "%" " ") t)))

(defun Buffer-menu-bury ()
  "Bury the buffer listed on this line."
  (interactive)
  (let ((buffer (tabulated-list-get-id)))
    (cond ((null buffer))
	  ((buffer-live-p buffer)
	   (bury-buffer buffer)
	   (save-excursion
	     (let ((elt (tabulated-list-delete-entry)))
	       (goto-char (point-max))
	       (apply 'tabulated-list-print-entry elt)))
	   (message "Buffer buried."))
	  (t
	   (tabulated-list-delete-entry)
	   (message "Buffer is dead; removing from list.")))))

(defun Buffer-menu-view ()
  "View this line's buffer in View mode."
  (interactive)
  (view-buffer (Buffer-menu-buffer t)))

(defun Buffer-menu-view-other-window ()
  "View this line's buffer in View mode in another window."
  (interactive)
  (view-buffer-other-window (Buffer-menu-buffer t)))
\f
;;; Functions for populating the Buffer Menu.

;;;###autoload
(defun list-buffers-noselect (&optional files-only buffer-list)
  "Create and return a Buffer Menu buffer.
This is called by `buffer-menu' and others as a subroutine.

If FILES-ONLY is non-nil, show only file-visiting buffers.
If BUFFER-LIST is non-nil, it should be a list of buffers; it
means list those buffers and no others."
  (let ((old-buffer (current-buffer))
	(buffer (get-buffer-create "*Buffer List*")))
    (with-current-buffer buffer
      (Buffer-menu-mode)
      (setq Buffer-menu-files-only
	    (and files-only (>= (prefix-numeric-value files-only) 0)))
      (list-buffers--refresh buffer-list old-buffer)
      (tabulated-list-print))
    buffer))

(defun Buffer-menu-mouse-select (event)
  "Select the buffer whose line you click on."
  (interactive "e")
  (select-window (posn-window (event-end event)))
  (let ((buffer (tabulated-list-get-id (posn-point (event-end event)))))
    (when (buffer-live-p buffer)
      (if (and (window-dedicated-p)
	       (eq (selected-window) (frame-root-window)))
	  (switch-to-buffer-other-frame buffer)
	(switch-to-buffer buffer)))))

(defun list-buffers--refresh (&optional buffer-list old-buffer)
  ;; Set up `tabulated-list-format'.
  (let ((name-width Buffer-menu-name-width)
	(size-width Buffer-menu-size-width)
        (marked-buffers (Buffer-menu-marked-buffers))
        (buffer-menu-buffer (current-buffer))
	(show-non-file (not Buffer-menu-files-only))
	entries)
    ;; Handle obsolete variable:
    (if Buffer-menu-buffer+size-width
	(setq name-width (- Buffer-menu-buffer+size-width size-width)))
    (setq tabulated-list-format
	  (vector '("C" 1 t :pad-right 0)
		  '("R" 1 t :pad-right 0)
		  '("M" 1 t)
		  `("Buffer" ,name-width t)
		  `("Size" ,size-width tabulated-list-entry-size->
                    :right-align t)
		  `("Mode" ,Buffer-menu-mode-width t)
		  '("File" 1 t)))
    (setq tabulated-list-use-header-line Buffer-menu-use-header-line)
    ;; Collect info for each buffer we're interested in.
    (dolist (buffer (or buffer-list
			(buffer-list (if Buffer-menu-use-frame-buffer-list
					 (selected-frame)))))
      (with-current-buffer buffer
	(let* ((name (buffer-name))
	       (file buffer-file-name))
	  (when (and (buffer-live-p buffer)
		     (or buffer-list
			 (and (or (not (string= (substring name 0 1) " "))
                                  file)
			      (not (eq buffer buffer-menu-buffer))
			      (or file show-non-file))))
	    (push (list buffer
			(vector (cond
                                 ((eq buffer old-buffer) ".")
                                 ((member buffer marked-buffers) ">")
                                 (t " "))
				(if buffer-read-only "%" " ")
				(if (buffer-modified-p) "*" " ")
				(Buffer-menu--pretty-name name)
				(number-to-string (buffer-size))
				(concat (format-mode-line mode-name
                                                          nil nil buffer)
					(if mode-line-process
					    (format-mode-line mode-line-process
							      nil nil buffer)))
				(Buffer-menu--pretty-file-name file)))
		  entries)))))
    (setq tabulated-list-entries (nreverse entries)))
  (tabulated-list-init-header))

(defun tabulated-list-entry-size-> (entry1 entry2)
  (> (string-to-number (aref (cadr entry1) 4))
     (string-to-number (aref (cadr entry2) 4))))

(defun Buffer-menu--pretty-name (name)
  (propertize name
	      'font-lock-face 'buffer-menu-buffer
	      'mouse-face 'highlight))

(defun Buffer-menu--pretty-file-name (file)
  (cond (file
	 (abbreviate-file-name file))
	((bound-and-true-p list-buffers-directory)
         (abbreviate-file-name list-buffers-directory))
	(t "")))

;;; buff-menu.el ends here

debug log:

solving 9f8cdce4a2 ...
found 9f8cdce4a2 in https://yhetil.org/emacs/CADwFkm=_pAoxHH4nCF4njgVFOK+y254N392LatzRqvuYzUvV2A@mail.gmail.com/
found 655a76a713 in https://git.savannah.gnu.org/cgit/emacs.git
preparing index
index prepared:
100644 655a76a713cad8295bf6123d029da65ddeddc2bf	lisp/buff-menu.el

applying [1/1] https://yhetil.org/emacs/CADwFkm=_pAoxHH4nCF4njgVFOK+y254N392LatzRqvuYzUvV2A@mail.gmail.com/
diff --git a/lisp/buff-menu.el b/lisp/buff-menu.el
index 655a76a713..9f8cdce4a2 100644

Checking patch lisp/buff-menu.el...
Applied patch lisp/buff-menu.el cleanly.

index at:
100644 9f8cdce4a214ea8f565f2a1ff53e0eecb72b61eb	lisp/buff-menu.el

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.