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1 ;;; dired-aux.el --- less commonly used parts of dired -*- lexical-binding: t -*-
3 ;; Copyright (C) 1985-1986, 1992, 1994, 1998, 2000-2017 Free Software
4 ;; Foundation, Inc.
6 ;; Author: Sebastian Kremer <sk@thp.uni-koeln.de>.
7 ;; Maintainer: emacs-devel@gnu.org
8 ;; Keywords: files
9 ;; Package: emacs
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software: you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation, either version 3 of the License, or
16 ;; (at your option) any later version.
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
26 ;;; Commentary:
28 ;; The parts of dired mode not normally used. This is a space-saving hack
29 ;; to avoid having to load a large mode when all that's wanted are a few
30 ;; functions.
32 ;; Rewritten in 1990/1991 to add tree features, file marking and
33 ;; sorting by Sebastian Kremer <sk@thp.uni-koeln.de>.
34 ;; Finished up by rms in 1992.
36 ;;; Code:
38 (require 'cl-lib)
39 ;; We need macros in dired.el to compile properly,
40 ;; and we call subroutines in it too.
41 (require 'dired)
43 (defvar dired-create-files-failures nil
44 "Variable where `dired-create-files' records failing file names.
45 Functions that operate recursively can store additional names
46 into this list; they also should call `dired-log' to log the errors.")
48 ;;; 15K
49 ;;;###begin dired-cmd.el
50 ;; Diffing and compressing
52 (defconst dired-star-subst-regexp "\\(^\\|[ \t]\\)\\*\\([ \t]\\|$\\)")
53 (defconst dired-quark-subst-regexp "\\(^\\|[ \t]\\)\\?\\([ \t]\\|$\\)")
54 (make-obsolete-variable 'dired-star-subst-regexp nil "26.1")
55 (make-obsolete-variable 'dired-quark-subst-regexp nil "26.1")
57 (defun dired-isolated-string-re (string)
58 "Return a regexp to match STRING isolated.
59 Isolated means that STRING is surrounded by spaces or at the beginning/end
60 of a string followed/prefixed with an space.
61 The regexp capture the preceding blank, STRING and the following blank as
62 the groups 1, 2 and 3 respectively."
63 (format "\\(\\`\\|[ \t]\\)\\(%s\\)\\([ \t]\\|\\'\\)" string))
65 (defun dired--star-or-qmark-p (string match &optional keep)
66 "Return non-nil if STRING contains isolated MATCH or `\\=`?\\=`'.
67 MATCH should be the strings \"?\", `\\=`?\\=`', \"*\" or nil. The latter
68 means STRING contains either \"?\" or `\\=`?\\=`' or \"*\".
69 If optional arg KEEP is non-nil, then preserve the match data. Otherwise,
70 this function changes it and saves MATCH as the second match group.
72 Isolated means that MATCH is surrounded by spaces or at the beginning/end
73 of STRING followed/prefixed with an space. A match to `\\=`?\\=`',
74 isolated or not, is also valid."
75 (let ((regexps (list (dired-isolated-string-re (if match (regexp-quote match) "[*?]")))))
76 (when (or (null match) (equal match "?"))
77 (setq regexps (append (list "\\(\\)\\(`\\?`\\)\\(\\)") regexps)))
78 (cl-some (lambda (x)
79 (funcall (if keep #'string-match-p #'string-match) x string))
80 regexps)))
82 ;;;###autoload
83 (defun dired-diff (file &optional switches)
84 "Compare file at point with FILE using `diff'.
85 If called interactively, prompt for FILE.
86 If the mark is active in Transient Mark mode, use the file at the mark
87 as the default for FILE. (That's the mark set by \\[set-mark-command],
88 not by Dired's \\[dired-mark] command.)
89 If the file at point has a backup file, use that as the default FILE.
90 If the file at point is a backup file, use its original, if that exists
91 and can be found. Note that customizations of `backup-directory-alist'
92 and `make-backup-file-name-function' change where this function searches
93 for the backup file, and affect its ability to find the original of a
94 backup file.
96 FILE is the first argument given to the `diff' function. The file at
97 point is the second argument given to `diff'.
99 With prefix arg, prompt for second argument SWITCHES, which is
100 the string of command switches used as the third argument of `diff'."
101 (interactive
102 (let* ((current (dired-get-filename t))
103 ;; Get the latest existing backup file or its original.
104 (oldf (if (backup-file-name-p current)
105 (file-name-sans-versions current)
106 (diff-latest-backup-file current)))
107 ;; Get the file at the mark.
108 (file-at-mark (if (and transient-mark-mode mark-active)
109 (save-excursion (goto-char (mark t))
110 (dired-get-filename t t))))
111 (separate-dir (and oldf
112 (not (equal (file-name-directory oldf)
113 (dired-current-directory)))))
114 (default-file (or file-at-mark
115 ;; If the file with which to compare
116 ;; doesn't exist, or we cannot intuit it,
117 ;; we forget that name and don't show it
118 ;; as the default, as an indication to the
119 ;; user that she should type the file
120 ;; name.
121 (and (if (and oldf (file-readable-p oldf)) oldf)
122 (if separate-dir
123 oldf
124 (file-name-nondirectory oldf)))))
125 ;; Use it as default if it's not the same as the current file,
126 ;; and the target dir is current or there is a default file.
127 (default (if (and (not (equal default-file current))
128 (or (equal (dired-dwim-target-directory)
129 (dired-current-directory))
130 default-file))
131 default-file))
132 (target-dir (if default
133 (if separate-dir
134 (file-name-directory default)
135 (dired-current-directory))
136 (dired-dwim-target-directory)))
137 (defaults (dired-dwim-target-defaults (list current) target-dir)))
138 (list
139 (minibuffer-with-setup-hook
140 (lambda ()
141 (set (make-local-variable 'minibuffer-default-add-function) nil)
142 (setq minibuffer-default defaults))
143 (read-file-name
144 (format "Diff %s with%s: " current
145 (if default (format " (default %s)" default) ""))
146 target-dir default t))
147 (if current-prefix-arg
148 (read-string "Options for diff: "
149 (if (stringp diff-switches)
150 diff-switches
151 (mapconcat 'identity diff-switches " ")))))))
152 (let ((current (dired-get-filename t)))
153 (when (or (equal (expand-file-name file)
154 (expand-file-name current))
155 (and (file-directory-p file)
156 (equal (expand-file-name current file)
157 (expand-file-name current))))
158 (error "Attempt to compare the file to itself"))
159 (if (and (backup-file-name-p current)
160 (equal file (file-name-sans-versions current)))
161 (diff current file switches)
162 (diff file current switches))))
164 ;;;###autoload
165 (defun dired-backup-diff (&optional switches)
166 "Diff this file with its backup file or vice versa.
167 Uses the latest backup, if there are several numerical backups.
168 If this file is a backup, diff it with its original.
169 The backup file is the first file given to `diff'.
170 With prefix arg, prompt for argument SWITCHES which is options for `diff'."
171 (interactive
172 (if current-prefix-arg
173 (list (read-string "Options for diff: "
174 (if (stringp diff-switches)
175 diff-switches
176 (mapconcat 'identity diff-switches " "))))
177 nil))
178 (diff-backup (dired-get-filename) switches))
180 ;;;###autoload
181 (defun dired-compare-directories (dir2 predicate)
182 "Mark files with different file attributes in two dired buffers.
183 Compare file attributes of files in the current directory
184 with file attributes in directory DIR2 using PREDICATE on pairs of files
185 with the same name. Mark files for which PREDICATE returns non-nil.
186 Mark files with different names if PREDICATE is nil (or interactively
187 with empty input at the predicate prompt).
189 PREDICATE is a Lisp expression that can refer to the following variables:
191 size1, size2 - file size in bytes
192 mtime1, mtime2 - last modification time in seconds, as a float
193 fa1, fa2 - list of file attributes
194 returned by function `file-attributes'
196 where 1 refers to attribute of file in the current dired buffer
197 and 2 to attribute of file in second dired buffer.
199 Examples of PREDICATE:
201 (> mtime1 mtime2) - mark newer files
202 (not (= size1 size2)) - mark files with different sizes
203 (not (string= (nth 8 fa1) (nth 8 fa2))) - mark files with different modes
204 (not (and (= (nth 2 fa1) (nth 2 fa2)) - mark files with different UID
205 (= (nth 3 fa1) (nth 3 fa2)))) and GID."
206 (interactive
207 (list
208 (let* ((target-dir (dired-dwim-target-directory))
209 (defaults (dired-dwim-target-defaults nil target-dir)))
210 (minibuffer-with-setup-hook
211 (lambda ()
212 (set (make-local-variable 'minibuffer-default-add-function) nil)
213 (setq minibuffer-default defaults))
214 (read-directory-name (format "Compare %s with: "
215 (dired-current-directory))
216 target-dir target-dir t)))
217 (read-from-minibuffer "Mark if (lisp expr or RET): " nil nil t nil "nil")))
218 (let* ((dir1 (dired-current-directory))
219 (file-alist1 (dired-files-attributes dir1))
220 (file-alist2 (dired-files-attributes dir2))
221 file-list1 file-list2)
222 (setq file-alist1 (delq (assoc "." file-alist1) file-alist1))
223 (setq file-alist1 (delq (assoc ".." file-alist1) file-alist1))
224 (setq file-alist2 (delq (assoc "." file-alist2) file-alist2))
225 (setq file-alist2 (delq (assoc ".." file-alist2) file-alist2))
226 (setq file-list1 (mapcar
227 'cadr
228 (dired-file-set-difference
229 file-alist1 file-alist2
230 predicate))
231 file-list2 (mapcar
232 'cadr
233 (dired-file-set-difference
234 file-alist2 file-alist1
235 predicate)))
236 (dired-fun-in-all-buffers
237 dir1 nil
238 (lambda ()
239 (dired-mark-if
240 (member (dired-get-filename nil t) file-list1) nil)))
241 (dired-fun-in-all-buffers
242 dir2 nil
243 (lambda ()
244 (dired-mark-if
245 (member (dired-get-filename nil t) file-list2) nil)))
246 (message "Marked in dir1: %s files, in dir2: %s files"
247 (length file-list1)
248 (length file-list2))))
250 (defun dired-file-set-difference (list1 list2 predicate)
251 "Combine LIST1 and LIST2 using a set-difference operation.
252 The result list contains all file items that appear in LIST1 but not LIST2.
253 This is a non-destructive function; it makes a copy of the data if necessary
254 to avoid corrupting the original LIST1 and LIST2.
255 PREDICATE (see `dired-compare-directories') is an additional match
256 condition. Two file items are considered to match if they are equal
257 *and* PREDICATE evaluates to t."
258 (if (or (null list1) (null list2))
259 list1
260 (let (res)
261 (dolist (file1 list1)
262 (unless (let ((list list2))
263 (while (and list
264 (let* ((file2 (car list))
265 (fa1 (car (cddr file1)))
266 (fa2 (car (cddr file2))))
268 (not (equal (car file1) (car file2)))
269 (eval predicate
270 `((fa1 . ,fa1)
271 (fa2 . ,fa2)
272 (size1 . ,(nth 7 fa1))
273 (size2 . ,(nth 7 fa2))
274 (mtime1
275 . ,(float-time (nth 5 fa1)))
276 (mtime2
277 . ,(float-time (nth 5 fa2)))
278 )))))
279 (setq list (cdr list)))
280 list)
281 (push file1 res)))
282 (nreverse res))))
284 (defun dired-files-attributes (dir)
285 "Return a list of all file names and attributes from DIR.
286 List has a form of (file-name full-file-name (attribute-list))."
287 (mapcar
288 (lambda (file-name)
289 (let ((full-file-name (expand-file-name file-name dir)))
290 (list file-name
291 full-file-name
292 (file-attributes full-file-name))))
293 (directory-files dir)))
295 ;;; Change file attributes
297 (defun dired-do-chxxx (attribute-name program op-symbol arg)
298 ;; Change file attributes (group, owner, timestamp) of marked files and
299 ;; refresh their file lines.
300 ;; ATTRIBUTE-NAME is a string describing the attribute to the user.
301 ;; PROGRAM is the program used to change the attribute.
302 ;; OP-SYMBOL is the type of operation (for use in `dired-mark-pop-up').
303 ;; ARG describes which files to use, as in `dired-get-marked-files'.
304 (let* ((files (dired-get-marked-files t arg))
305 ;; The source of default file attributes is the file at point.
306 (default-file (dired-get-filename t t))
307 (default (when default-file
308 (cond ((eq op-symbol 'touch)
309 (format-time-string
310 "%Y%m%d%H%M.%S"
311 (nth 5 (file-attributes default-file))))
312 ((eq op-symbol 'chown)
313 (nth 2 (file-attributes default-file 'string)))
314 ((eq op-symbol 'chgrp)
315 (nth 3 (file-attributes default-file 'string))))))
316 (prompt (concat "Change " attribute-name " of %s to"
317 (if (eq op-symbol 'touch)
318 " (default now): "
319 ": ")))
320 (new-attribute (dired-mark-read-string prompt nil op-symbol
321 arg files default
322 (cond ((eq op-symbol 'chown)
323 (system-users))
324 ((eq op-symbol 'chgrp)
325 (system-groups)))))
326 (operation (concat program " " new-attribute))
327 ;; When file-name-coding-system is set to something different
328 ;; from locale-coding-system, leaving the encoding
329 ;; determination to call-process will do the wrong thing,
330 ;; because the arguments in this case are file names, not
331 ;; just some arbitrary text. (This must be bound last, to
332 ;; avoid adverse effects on any of the preceding forms.)
333 (coding-system-for-write (or file-name-coding-system
334 default-file-name-coding-system))
335 failures)
336 (setq failures
337 (dired-bunch-files 10000
338 #'dired-check-process
339 (append
340 (list operation program)
341 (unless (or (string-equal new-attribute "")
342 ;; Use `eq' instead of `equal'
343 ;; to detect empty input (bug#12399).
344 (eq new-attribute default))
345 (if (eq op-symbol 'touch)
346 (list "-t" new-attribute)
347 (list new-attribute)))
348 (if (string-match-p "gnu" system-configuration)
349 '("--") nil))
350 files))
351 (dired-do-redisplay arg);; moves point if ARG is an integer
352 (if failures
353 (dired-log-summary
354 (format "%s: error" operation)
355 nil))))
357 ;;;###autoload
358 (defun dired-do-chmod (&optional arg)
359 "Change the mode of the marked (or next ARG) files.
360 Symbolic modes like `g+w' are allowed.
361 Type M-n to pull the file attributes of the file at point
362 into the minibuffer."
363 (interactive "P")
364 (let* ((files (dired-get-marked-files t arg))
365 ;; The source of default file attributes is the file at point.
366 (default-file (dired-get-filename t t))
367 (modestr (when default-file
368 (nth 8 (file-attributes default-file))))
369 (default
370 (and (stringp modestr)
371 (string-match "^.\\(...\\)\\(...\\)\\(...\\)$" modestr)
372 (replace-regexp-in-string
373 "-" ""
374 (format "u=%s,g=%s,o=%s"
375 (match-string 1 modestr)
376 (match-string 2 modestr)
377 (match-string 3 modestr)))))
378 (modes (dired-mark-read-string
379 "Change mode of %s to: "
380 nil 'chmod arg files default))
381 num-modes)
382 (cond ((or (equal modes "")
383 ;; Use `eq' instead of `equal'
384 ;; to detect empty input (bug#12399).
385 (eq modes default))
386 ;; We used to treat empty input as DEFAULT, but that is not
387 ;; such a good idea (Bug#9361).
388 (error "No file mode specified"))
389 ((string-match-p "^[0-7]+" modes)
390 (setq num-modes (string-to-number modes 8))))
392 (dolist (file files)
393 (set-file-modes
394 file
395 (if num-modes num-modes
396 (file-modes-symbolic-to-number modes (file-modes file)))))
397 (dired-do-redisplay arg)))
399 ;;;###autoload
400 (defun dired-do-chgrp (&optional arg)
401 "Change the group of the marked (or next ARG) files.
402 Type M-n to pull the file attributes of the file at point
403 into the minibuffer."
404 (interactive "P")
405 (if (memq system-type '(ms-dos windows-nt))
406 (error "chgrp not supported on this system"))
407 (dired-do-chxxx "Group" "chgrp" 'chgrp arg))
409 ;;;###autoload
410 (defun dired-do-chown (&optional arg)
411 "Change the owner of the marked (or next ARG) files.
412 Type M-n to pull the file attributes of the file at point
413 into the minibuffer."
414 (interactive "P")
415 (if (memq system-type '(ms-dos windows-nt))
416 (error "chown not supported on this system"))
417 (dired-do-chxxx "Owner" dired-chown-program 'chown arg))
419 ;;;###autoload
420 (defun dired-do-touch (&optional arg)
421 "Change the timestamp of the marked (or next ARG) files.
422 This calls touch.
423 Type M-n to pull the file attributes of the file at point
424 into the minibuffer."
425 (interactive "P")
426 (dired-do-chxxx "Timestamp" dired-touch-program 'touch arg))
428 ;; Process all the files in FILES in batches of a convenient size,
429 ;; by means of (FUNCALL FUNCTION ARGS... SOME-FILES...).
430 ;; Batches are chosen to need less than MAX chars for the file names,
431 ;; allowing 3 extra characters of separator per file name.
432 (defun dired-bunch-files (max function args files)
433 (let (pending
434 past
435 (pending-length 0)
436 failures)
437 ;; Accumulate files as long as they fit in MAX chars,
438 ;; then process the ones accumulated so far.
439 (while files
440 (let* ((thisfile (car files))
441 (thislength (+ (length thisfile) 3))
442 (rest (cdr files)))
443 ;; If we have at least 1 pending file
444 ;; and this file won't fit in the length limit, process now.
445 (if (and pending (> (+ thislength pending-length) max))
446 (setq pending (nreverse pending)
447 ;; The elements of PENDING are now in forward order.
448 ;; Do the operation and record failures.
449 failures (nconc (apply function (append args pending))
450 failures)
451 ;; Transfer the elements of PENDING onto PAST
452 ;; and clear it out. Now PAST contains the first N files
453 ;; specified (for some N), and FILES contains the rest.
454 past (nconc past pending)
455 pending nil
456 pending-length 0))
457 ;; Do (setq pending (cons thisfile pending))
458 ;; but reuse the cons that was in `files'.
459 (setcdr files pending)
460 (setq pending files)
461 (setq pending-length (+ thislength pending-length))
462 (setq files rest)))
463 (setq pending (nreverse pending))
464 (prog1
465 (nconc (apply function (append args pending))
466 failures)
467 ;; Now the original list FILES has been put back as it was.
468 (nconc past pending))))
470 (defvar lpr-printer-switch)
472 ;;;###autoload
473 (defun dired-do-print (&optional arg)
474 "Print the marked (or next ARG) files.
475 Uses the shell command coming from variables `lpr-command' and
476 `lpr-switches' as default."
477 (interactive "P")
478 (require 'lpr)
479 (let* ((file-list (dired-get-marked-files t arg))
480 (lpr-switches
481 (if (and (stringp printer-name)
482 (string< "" printer-name))
483 (cons (concat lpr-printer-switch printer-name)
484 lpr-switches)
485 lpr-switches))
486 (command (dired-mark-read-string
487 "Print %s with: "
488 (mapconcat 'identity
489 (cons lpr-command
490 (if (stringp lpr-switches)
491 (list lpr-switches)
492 lpr-switches))
493 " ")
494 'print arg file-list)))
495 (dired-run-shell-command (dired-shell-stuff-it command file-list nil))))
497 (defun dired-mark-read-string (prompt initial op-symbol arg files
498 &optional default-value collection)
499 "Read args for a Dired marked-files command, prompting with PROMPT.
500 Return the user input (a string).
502 INITIAL, if non-nil, is the initial minibuffer input.
503 OP-SYMBOL is an operation symbol (see `dired-no-confirm').
504 ARG is normally the prefix argument for the calling command;
505 it is passed as the first argument to `dired-mark-prompt'.
506 FILES should be a list of marked files' names.
508 Optional arg DEFAULT-VALUE is a default value or list of default
509 values, passed as the seventh arg to `completing-read'.
511 Optional arg COLLECTION is a collection of possible completions,
512 passed as the second arg to `completing-read'."
513 (dired-mark-pop-up nil op-symbol files
514 'completing-read
515 (format prompt (dired-mark-prompt arg files))
516 collection nil nil initial nil default-value nil))
518 ;;; Cleaning a directory: flagging some backups for deletion.
520 (defvar dired-file-version-alist)
522 ;;;###autoload
523 (defun dired-clean-directory (keep)
524 "Flag numerical backups for deletion.
525 Spares `dired-kept-versions' latest versions, and `kept-old-versions' oldest.
526 Positive prefix arg KEEP overrides `dired-kept-versions';
527 Negative prefix arg KEEP overrides `kept-old-versions' with KEEP made positive.
529 To clear the flags on these files, you can use \\[dired-flag-backup-files]
530 with a prefix argument."
531 (interactive "P")
532 (setq keep (if keep (prefix-numeric-value keep) dired-kept-versions))
533 (let ((early-retention (if (< keep 0) (- keep) kept-old-versions))
534 (late-retention (if (<= keep 0) dired-kept-versions keep))
535 (dired-file-version-alist ()))
536 (message "Cleaning numerical backups (keeping %d late, %d old)..."
537 late-retention early-retention)
538 ;; Look at each file.
539 ;; If the file has numeric backup versions,
540 ;; put on dired-file-version-alist an element of the form
541 ;; (FILENAME . VERSION-NUMBER-LIST)
542 (dired-map-dired-file-lines #'dired-collect-file-versions)
543 ;; Sort each VERSION-NUMBER-LIST,
544 ;; and remove the versions not to be deleted.
545 (let ((fval dired-file-version-alist))
546 (while fval
547 (let* ((sorted-v-list (cons 'q (sort (cdr (car fval)) '<)))
548 (v-count (length sorted-v-list)))
549 (if (> v-count (+ early-retention late-retention))
550 (rplacd (nthcdr early-retention sorted-v-list)
551 (nthcdr (- v-count late-retention)
552 sorted-v-list)))
553 (rplacd (car fval)
554 (cdr sorted-v-list)))
555 (setq fval (cdr fval))))
556 ;; Look at each file. If it is a numeric backup file,
557 ;; find it in a VERSION-NUMBER-LIST and maybe flag it for deletion.
558 (dired-map-dired-file-lines #'dired-trample-file-versions)
559 (message "Cleaning numerical backups...done")))
561 ;;; Subroutines of dired-clean-directory.
563 (defun dired-map-dired-file-lines (fun)
564 ;; Perform FUN with point at the end of each non-directory line.
565 ;; FUN takes one argument, the absolute filename.
566 (save-excursion
567 (let (file buffer-read-only)
568 (goto-char (point-min))
569 (while (not (eobp))
570 (save-excursion
571 (and (not (looking-at-p dired-re-dir))
572 (not (eolp))
573 (setq file (dired-get-filename nil t)) ; nil on non-file
574 (progn (end-of-line)
575 (funcall fun file))))
576 (forward-line 1)))))
578 (defvar backup-extract-version-start) ; used in backup-extract-version
580 (defun dired-collect-file-versions (fn)
581 (let ((fn (file-name-sans-versions fn)))
582 ;; Only do work if this file is not already in the alist.
583 (if (assoc fn dired-file-version-alist)
585 ;; If it looks like file FN has versions, return a list of the versions.
586 ;;That is a list of strings which are file names.
587 ;;The caller may want to flag some of these files for deletion.
588 (let* ((base-versions
589 (concat (file-name-nondirectory fn) ".~"))
590 (backup-extract-version-start (length base-versions))
591 (possibilities (file-name-all-completions
592 base-versions
593 (file-name-directory fn)))
594 (versions (mapcar 'backup-extract-version possibilities)))
595 (if versions
596 (setq dired-file-version-alist
597 (cons (cons fn versions)
598 dired-file-version-alist)))))))
600 (defun dired-trample-file-versions (fn)
601 (let* ((start-vn (string-match-p "\\.~[0-9]+~$" fn))
602 base-version-list)
603 (and start-vn
604 (setq base-version-list ; there was a base version to which
605 (assoc (substring fn 0 start-vn) ; this looks like a
606 dired-file-version-alist)) ; subversion
607 (not (memq (string-to-number (substring fn (+ 2 start-vn)))
608 base-version-list)) ; this one doesn't make the cut
609 (progn (beginning-of-line)
610 (delete-char 1)
611 (insert dired-del-marker)))))
613 ;;; Shell commands
615 (declare-function mailcap-file-default-commands "mailcap" (files))
617 (defun minibuffer-default-add-dired-shell-commands ()
618 "Return a list of all commands associated with current dired files.
619 This function is used to add all related commands retrieved by `mailcap'
620 to the end of the list of defaults just after the default value."
621 (interactive)
622 (let* ((files minibuffer-completion-table)
623 (commands (and (require 'mailcap nil t)
624 (mailcap-file-default-commands files))))
625 (if (listp minibuffer-default)
626 (append minibuffer-default commands)
627 (cons minibuffer-default commands))))
629 ;; This is an extra function so that you can redefine it, e.g., to use gmhist.
630 (defun dired-read-shell-command (prompt arg files)
631 "Read a dired shell command.
632 PROMPT should be a format string with one \"%s\" format sequence,
633 which is replaced by the value returned by `dired-mark-prompt',
634 with ARG and FILES as its arguments. FILES should be a list of
635 file names. The result is used as the prompt.
637 This normally reads using `read-shell-command', but if the
638 `dired-x' package is loaded, use `dired-guess-shell-command' to
639 offer a smarter default choice of shell command."
640 (minibuffer-with-setup-hook
641 (lambda ()
642 (set (make-local-variable 'minibuffer-completion-table) files)
643 (set (make-local-variable 'minibuffer-default-add-function)
644 'minibuffer-default-add-dired-shell-commands))
645 (setq prompt (format prompt (dired-mark-prompt arg files)))
646 (if (functionp 'dired-guess-shell-command)
647 (dired-mark-pop-up nil 'shell files
648 'dired-guess-shell-command prompt files)
649 (dired-mark-pop-up nil 'shell files
650 'read-shell-command prompt nil nil))))
652 ;;;###autoload
653 (defun dired-do-async-shell-command (command &optional arg file-list)
654 "Run a shell command COMMAND on the marked files asynchronously.
656 Like `dired-do-shell-command', but adds `&' at the end of COMMAND
657 to execute it asynchronously.
659 When operating on multiple files, asynchronous commands
660 are executed in the background on each file in parallel.
661 In shell syntax this means separating the individual commands
662 with `&'. However, when COMMAND ends in `;' or `;&' then commands
663 are executed in the background on each file sequentially waiting
664 for each command to terminate before running the next command.
665 In shell syntax this means separating the individual commands with `;'.
667 The output appears in the buffer `*Async Shell Command*'."
668 (interactive
669 (let ((files (dired-get-marked-files t current-prefix-arg)))
670 (list
671 ;; Want to give feedback whether this file or marked files are used:
672 (dired-read-shell-command "& on %s: " current-prefix-arg files)
673 current-prefix-arg
674 files)))
675 (unless (string-match-p "&[ \t]*\\'" command)
676 (setq command (concat command " &")))
677 (dired-do-shell-command command arg file-list))
679 ;;;###autoload
680 (defun dired-do-shell-command (command &optional arg file-list)
681 "Run a shell command COMMAND on the marked files.
682 If no files are marked or a numeric prefix arg is given,
683 the next ARG files are used. Just \\[universal-argument] means the current file.
684 The prompt mentions the file(s) or the marker, as appropriate.
686 If there is a `*' in COMMAND, surrounded by whitespace, this runs
687 COMMAND just once with the entire file list substituted there.
689 If there is no `*', but there is a `?' in COMMAND, surrounded by
690 whitespace, or a `\\=`?\\=`' this runs COMMAND on each file
691 individually with the file name substituted for `?' or `\\=`?\\=`'.
693 Otherwise, this runs COMMAND on each file individually with the
694 file name added at the end of COMMAND (separated by a space).
696 `*' and `?' when not surrounded by whitespace nor `\\=`' have no special
697 significance for `dired-do-shell-command', and are passed through
698 normally to the shell, but you must confirm first.
700 If you want to use `*' as a shell wildcard with whitespace around
701 it, write `*\"\"' in place of just `*'. This is equivalent to just
702 `*' in the shell, but avoids Dired's special handling.
704 If COMMAND ends in `&', `;', or `;&', it is executed in the
705 background asynchronously, and the output appears in the buffer
706 `*Async Shell Command*'. When operating on multiple files and COMMAND
707 ends in `&', the shell command is executed on each file in parallel.
708 However, when COMMAND ends in `;' or `;&' then commands are executed
709 in the background on each file sequentially waiting for each command
710 to terminate before running the next command. You can also use
711 `dired-do-async-shell-command' that automatically adds `&'.
713 Otherwise, COMMAND is executed synchronously, and the output
714 appears in the buffer `*Shell Command Output*'.
716 This feature does not try to redisplay Dired buffers afterward, as
717 there's no telling what files COMMAND may have changed.
718 Type \\[dired-do-redisplay] to redisplay the marked files.
720 When COMMAND runs, its working directory is the top-level directory
721 of the Dired buffer, so output files usually are created there
722 instead of in a subdir.
724 In a noninteractive call (from Lisp code), you must specify
725 the list of file names explicitly with the FILE-LIST argument, which
726 can be produced by `dired-get-marked-files', for example."
727 ;;Functions dired-run-shell-command and dired-shell-stuff-it do the
728 ;;actual work and can be redefined for customization.
729 (interactive
730 (let ((files (dired-get-marked-files t current-prefix-arg)))
731 (list
732 ;; Want to give feedback whether this file or marked files are used:
733 (dired-read-shell-command "! on %s: " current-prefix-arg files)
734 current-prefix-arg
735 files)))
736 (cl-flet ((need-confirm-p
737 (cmd str)
738 (let ((res cmd)
739 (regexp (regexp-quote str)))
740 ;; Drop all ? and * surrounded by spaces and `?`.
741 (while (and (string-match regexp res)
742 (dired--star-or-qmark-p res str))
743 (setq res (replace-match "" t t res 2)))
744 (string-match regexp res))))
745 (let* ((on-each (not (dired--star-or-qmark-p command "*" 'keep)))
746 (no-subst (not (dired--star-or-qmark-p command "?" 'keep)))
747 ;; Get confirmation for wildcards that may have been meant
748 ;; to control substitution of a file name or the file name list.
749 (ok (cond ((not (or on-each no-subst))
750 (error "You can not combine `*' and `?' substitution marks"))
751 ((need-confirm-p command "*")
752 (y-or-n-p (format-message
753 "Confirm--do you mean to use `*' as a wildcard? ")))
754 ((need-confirm-p command "?")
755 (y-or-n-p (format-message
756 "Confirm--do you mean to use `?' as a wildcard? ")))
757 (t))))
758 (when ok
759 (if on-each
760 (dired-bunch-files (- 10000 (length command))
761 (lambda (&rest files)
762 (dired-run-shell-command
763 (dired-shell-stuff-it command files t arg)))
764 nil file-list)
765 ;; execute the shell command
766 (dired-run-shell-command
767 (dired-shell-stuff-it command file-list nil arg)))))))
769 ;; Might use {,} for bash or csh:
770 (defvar dired-mark-prefix ""
771 "Prepended to marked files in dired shell commands.")
772 (defvar dired-mark-postfix ""
773 "Appended to marked files in dired shell commands.")
774 (defvar dired-mark-separator " "
775 "Separates marked files in dired shell commands.")
777 (defun dired-shell-stuff-it (command file-list on-each &optional _raw-arg)
778 ;; "Make up a shell command line from COMMAND and FILE-LIST.
779 ;; If ON-EACH is t, COMMAND should be applied to each file, else
780 ;; simply concat all files and apply COMMAND to this.
781 ;; FILE-LIST's elements will be quoted for the shell."
782 ;; Might be redefined for smarter things and could then use RAW-ARG
783 ;; (coming from interactive P and currently ignored) to decide what to do.
784 ;; Smart would be a way to access basename or extension of file names.
785 (let* ((in-background (string-match "[ \t]*&[ \t]*\\'" command))
786 (command (if in-background
787 (substring command 0 (match-beginning 0))
788 command))
789 (sequentially (string-match "[ \t]*;[ \t]*\\'" command))
790 (command (if sequentially
791 (substring command 0 (match-beginning 0))
792 command))
793 (parallel-in-background
794 (and in-background (not sequentially) (not (eq system-type 'ms-dos))))
795 (w32-shell (and (fboundp 'w32-shell-dos-semantics)
796 (w32-shell-dos-semantics)))
797 ;; The way to run a command in background in Windows shells
798 ;; is to use the START command. The /B switch means not to
799 ;; create a new window for the command.
800 (cmd-prefix (if w32-shell "start /b " ""))
801 ;; Windows shells don't support chaining with ";", they use
802 ;; "&" instead.
803 (cmd-sep (if (and (not w32-shell) (not parallel-in-background))
805 "&"))
806 (stuff-it
807 (if (dired--star-or-qmark-p command nil 'keep)
808 (lambda (x)
809 (let ((retval (concat cmd-prefix command)))
810 (while (dired--star-or-qmark-p retval nil)
811 (setq retval (replace-match x t t retval 2)))
812 retval))
813 (lambda (x) (concat cmd-prefix command dired-mark-separator x)))))
814 (concat
815 (cond (on-each
816 (format "%s%s"
817 (mapconcat stuff-it (mapcar 'shell-quote-argument file-list)
818 cmd-sep)
819 ;; POSIX shells running a list of commands in the background
820 ;; (LIST = cmd_1 & [cmd_2 & ... cmd_i & ... cmd_N &])
821 ;; return once cmd_N ends, i.e., the shell does not
822 ;; wait for cmd_i to finish before executing cmd_i+1.
823 ;; That means, running (shell-command LIST) may not show
824 ;; the output of all the commands (Bug#23206).
825 ;; Add 'wait' to force those POSIX shells to wait until
826 ;; all commands finish.
827 (or (and parallel-in-background (not w32-shell)
828 "&wait")
829 "")))
831 (let ((files (mapconcat 'shell-quote-argument
832 file-list dired-mark-separator)))
833 (when (cdr file-list)
834 (setq files (concat dired-mark-prefix files dired-mark-postfix)))
835 (funcall stuff-it files))))
836 (or (and in-background "&") ""))))
838 ;; This is an extra function so that it can be redefined by ange-ftp.
839 ;;;###autoload
840 (defun dired-run-shell-command (command)
841 (let ((handler
842 (find-file-name-handler (directory-file-name default-directory)
843 'shell-command)))
844 (if handler (apply handler 'shell-command (list command))
845 (shell-command command)))
846 ;; Return nil for sake of nconc in dired-bunch-files.
847 nil)
850 (defun dired-check-process (msg program &rest arguments)
851 "Display MSG while running PROGRAM, and check for output.
852 Remaining arguments are strings passed as command arguments to PROGRAM.
853 On error, insert output
854 in a log buffer and return the offending ARGUMENTS or PROGRAM.
855 Caller can cons up a list of failed args.
856 Else returns nil for success."
857 (let (err-buffer err (dir default-directory))
858 (message "%s..." msg)
859 (save-excursion
860 ;; Get a clean buffer for error output:
861 (setq err-buffer (get-buffer-create " *dired-check-process output*"))
862 (set-buffer err-buffer)
863 (erase-buffer)
864 (setq default-directory dir ; caller's default-directory
865 err (not (eq 0 (apply 'process-file program nil t nil arguments))))
866 (if err
867 (progn
868 (dired-log (concat program " " (prin1-to-string arguments) "\n"))
869 (dired-log err-buffer)
870 (or arguments program t))
871 (kill-buffer err-buffer)
872 (message "%s...done" msg)
873 nil))))
875 (defun dired-shell-command (cmd)
876 "Run CMD, and check for output.
877 On error, pop up the log buffer.
878 Return the result of `process-file' - zero for success."
879 (let ((out-buffer " *dired-check-process output*")
880 (dir default-directory))
881 (with-current-buffer (get-buffer-create out-buffer)
882 (erase-buffer)
883 (let* ((default-directory dir)
884 (res (process-file
885 shell-file-name
889 shell-command-switch
890 cmd)))
891 (unless (zerop res)
892 (pop-to-buffer out-buffer))
893 res))))
895 ;; Commands that delete or redisplay part of the dired buffer.
897 (defun dired-kill-line (&optional arg)
898 "Kill the current line (not the files).
899 With a prefix argument, kill that many lines starting with the current line.
900 \(A negative argument kills backward.)"
901 (interactive "P")
902 (setq arg (prefix-numeric-value arg))
903 (let (buffer-read-only file)
904 (while (/= 0 arg)
905 (setq file (dired-get-filename nil t))
906 (if (not file)
907 (error "Can only kill file lines")
908 (save-excursion (and file
909 (dired-goto-subdir file)
910 (dired-kill-subdir)))
911 (delete-region (line-beginning-position)
912 (progn (forward-line 1) (point)))
913 (if (> arg 0)
914 (setq arg (1- arg))
915 (setq arg (1+ arg))
916 (forward-line -1))))
917 (dired-move-to-filename)))
919 ;;;###autoload
920 (defun dired-do-kill-lines (&optional arg fmt)
921 "Kill all marked lines (not the files).
922 With a prefix argument, kill that many lines starting with the current line.
923 \(A negative argument kills backward.)
924 If you use this command with a prefix argument to kill the line
925 for a file that is a directory, which you have inserted in the
926 Dired buffer as a subdirectory, then it deletes that subdirectory
927 from the buffer as well.
928 To kill an entire subdirectory \(without killing its line in the
929 parent directory), go to its directory header line and use this
930 command with a prefix argument (the value does not matter)."
931 ;; Returns count of killed lines. FMT="" suppresses message.
932 (interactive "P")
933 (if arg
934 (if (dired-get-subdir)
935 (dired-kill-subdir)
936 (dired-kill-line arg))
937 (save-excursion
938 (goto-char (point-min))
939 (let (buffer-read-only
940 (count 0)
941 (regexp (dired-marker-regexp)))
942 (while (and (not (eobp))
943 (re-search-forward regexp nil t))
944 (setq count (1+ count))
945 (delete-region (line-beginning-position)
946 (progn (forward-line 1) (point))))
947 (or (equal "" fmt)
948 (message (or fmt "Killed %d line%s.") count (dired-plural-s count)))
949 count))))
951 ;;;###end dired-cmd.el
953 ;;; 30K
954 ;;;###begin dired-cp.el
956 (defun dired-compress ()
957 ;; Compress or uncompress the current file.
958 ;; Return nil for success, offending filename else.
959 (let* (buffer-read-only
960 (from-file (dired-get-filename))
961 (new-file (dired-compress-file from-file)))
962 (if new-file
963 (let ((start (point)))
964 ;; Remove any preexisting entry for the name NEW-FILE.
965 (ignore-errors (dired-remove-entry new-file))
966 (goto-char start)
967 ;; Now replace the current line with an entry for NEW-FILE.
968 (dired-update-file-line new-file) nil)
969 (dired-log (concat "Failed to compress" from-file))
970 from-file)))
972 (defvar dired-compress-file-suffixes
974 ;; "tar -zxf" isn't used because it's not available on the
975 ;; Solaris10 version of tar. Solaris10 becomes obsolete in 2021.
976 ;; Same thing on AIX 7.1.
977 ("\\.tar\\.gz\\'" "" "gzip -dc %i | tar -xf -")
978 ("\\.tgz\\'" "" "gzip -dc %i | tar -xf -")
979 ("\\.gz\\'" "" "gunzip")
980 ("\\.Z\\'" "" "uncompress")
981 ;; For .z, try gunzip. It might be an old gzip file,
982 ;; or it might be from compact? pack? (which?) but gunzip handles both.
983 ("\\.z\\'" "" "gunzip")
984 ("\\.dz\\'" "" "dictunzip")
985 ("\\.tbz\\'" ".tar" "bunzip2")
986 ("\\.bz2\\'" "" "bunzip2")
987 ("\\.xz\\'" "" "unxz")
988 ("\\.zip\\'" "" "unzip -o -d %o %i")
989 ("\\.7z\\'" "" "7z x -aoa -o%o %i")
990 ;; This item controls naming for compression.
991 ("\\.tar\\'" ".tgz" nil)
992 ;; This item controls the compression of directories
993 (":" ".tar.gz" "tar -cf - %i | gzip -c9 > %o"))
994 "Control changes in file name suffixes for compression and uncompression.
995 Each element specifies one transformation rule, and has the form:
996 (REGEXP NEW-SUFFIX PROGRAM)
997 The rule applies when the old file name matches REGEXP.
998 The new file name is computed by deleting the part that matches REGEXP
999 (as well as anything after that), then adding NEW-SUFFIX in its place.
1000 If PROGRAM is non-nil, the rule is an uncompression rule,
1001 and uncompression is done by running PROGRAM.
1003 Within PROGRAM, %i denotes the input file, and %o denotes the
1004 output file.
1006 Otherwise, the rule is a compression rule, and compression is done with gzip.
1007 ARGS are command switches passed to PROGRAM.")
1009 (defvar dired-compress-files-alist
1010 '(("\\.tar\\.gz\\'" . "tar -cf - %i | gzip -c9 > %o")
1011 ("\\.tar\\.bz2\\'" . "tar -cf - %i | bzip2 -c9 > %o")
1012 ("\\.tar\\.xz\\'" . "tar -cf - %i | xz -c9 > %o")
1013 ("\\.zip\\'" . "zip %o -r --filesync %i"))
1014 "Control the compression shell command for `dired-do-compress-to'.
1016 Each element is (REGEXP . CMD), where REGEXP is the name of the
1017 archive to which you want to compress, and CMD is the
1018 corresponding command.
1020 Within CMD, %i denotes the input file(s), and %o denotes the
1021 output file. %i path(s) are relative, while %o is absolute.")
1023 (declare-function format-spec "format-spec.el" (format specification))
1025 ;;;###autoload
1026 (defun dired-do-compress-to ()
1027 "Compress selected files and directories to an archive.
1028 Prompt for the archive file name.
1029 Choose the archiving command based on the archive file-name extension
1030 and `dired-compress-files-alist'."
1031 (interactive)
1032 (let* ((in-files (dired-get-marked-files))
1033 (out-file (expand-file-name (read-file-name "Compress to: ")))
1034 (rule (cl-find-if
1035 (lambda (x)
1036 (string-match (car x) out-file))
1037 dired-compress-files-alist)))
1038 (cond ((not rule)
1039 (error
1040 "No compression rule found for %s, see `dired-compress-files-alist'"
1041 out-file))
1042 ((and (file-exists-p out-file)
1043 (not (y-or-n-p
1044 (format "%s exists, overwrite?"
1045 (abbreviate-file-name out-file)))))
1046 (message "Compression aborted"))
1048 (when (zerop
1049 (dired-shell-command
1050 (format-spec (cdr rule)
1051 `((?\o . ,(shell-quote-argument out-file))
1052 (?\i . ,(mapconcat
1053 (lambda (file-desc)
1054 (shell-quote-argument (file-name-nondirectory
1055 file-desc)))
1056 in-files " "))))))
1057 (message "Compressed %d file(s) to %s"
1058 (length in-files)
1059 (file-name-nondirectory out-file)))))))
1061 ;;;###autoload
1062 (defun dired-compress-file (file)
1063 "Compress or uncompress FILE.
1064 Return the name of the compressed or uncompressed file.
1065 Return nil if no change in files."
1066 (let ((handler (find-file-name-handler file 'dired-compress-file))
1067 suffix newname
1068 (suffixes dired-compress-file-suffixes)
1069 command)
1070 ;; See if any suffix rule matches this file name.
1071 (while suffixes
1072 (let (case-fold-search)
1073 (if (string-match (car (car suffixes)) file)
1074 (setq suffix (car suffixes) suffixes nil))
1075 (setq suffixes (cdr suffixes))))
1076 ;; If so, compute desired new name.
1077 (if suffix
1078 (setq newname (concat (substring file 0 (match-beginning 0))
1079 (nth 1 suffix))))
1080 (cond (handler
1081 (funcall handler 'dired-compress-file file))
1082 ((file-symlink-p file)
1083 nil)
1084 ((and suffix (setq command (nth 2 suffix)))
1085 (if (string-match "%[io]" command)
1086 (prog1 (setq newname (file-name-as-directory newname))
1087 (dired-shell-command
1088 (replace-regexp-in-string
1089 "%o" (shell-quote-argument newname)
1090 (replace-regexp-in-string
1091 "%i" (shell-quote-argument file)
1092 command
1093 nil t)
1094 nil t)))
1095 ;; We found an uncompression rule.
1096 (when (not
1097 (dired-check-process
1098 (concat "Uncompressing " file)
1099 command
1100 file))
1101 newname)))
1103 ;; We don't recognize the file as compressed, so compress it.
1104 ;; Try gzip; if we don't have that, use compress.
1105 (condition-case nil
1106 (if (file-directory-p file)
1107 (progn
1108 (setq suffix (cdr (assoc ":" dired-compress-file-suffixes)))
1109 (when suffix
1110 (let ((out-name (concat file (car suffix)))
1111 (default-directory (file-name-directory file)))
1112 (dired-shell-command
1113 (replace-regexp-in-string
1114 "%o" (shell-quote-argument out-name)
1115 (replace-regexp-in-string
1116 "%i" (shell-quote-argument (file-name-nondirectory file))
1117 (cadr suffix)
1118 nil t)
1119 nil t))
1120 out-name)))
1121 (let ((out-name (concat file ".gz")))
1122 (and (or (not (file-exists-p out-name))
1123 (y-or-n-p
1124 (format "File %s already exists. Really compress? "
1125 out-name)))
1126 (not
1127 (dired-check-process (concat "Compressing " file)
1128 "gzip" "-f" file))
1129 (or (file-exists-p out-name)
1130 (setq out-name (concat file ".z")))
1131 ;; Rename the compressed file to NEWNAME
1132 ;; if it hasn't got that name already.
1133 (if (and newname (not (equal newname out-name)))
1134 (progn
1135 (rename-file out-name newname t)
1136 newname)
1137 out-name))))
1138 (file-error
1139 (if (not (dired-check-process (concat "Compressing " file)
1140 "compress" "-f" file))
1141 ;; Don't use NEWNAME with `compress'.
1142 (concat file ".Z"))))))))
1144 (defun dired-mark-confirm (op-symbol arg)
1145 ;; Request confirmation from the user that the operation described
1146 ;; by OP-SYMBOL is to be performed on the marked files.
1147 ;; Confirmation consists in a y-or-n question with a file list
1148 ;; pop-up unless OP-SYMBOL is a member of `dired-no-confirm'.
1149 ;; The files used are determined by ARG (as in dired-get-marked-files).
1150 (or (eq dired-no-confirm t)
1151 (memq op-symbol dired-no-confirm)
1152 ;; Pass t for DISTINGUISH-ONE-MARKED so that a single file which
1153 ;; is marked pops up a window. That will help the user see
1154 ;; it isn't the current line file.
1155 (let ((files (dired-get-marked-files t arg nil t))
1156 (string (if (eq op-symbol 'compress) "Compress or uncompress"
1157 (capitalize (symbol-name op-symbol)))))
1158 (dired-mark-pop-up nil op-symbol files #'y-or-n-p
1159 (concat string " "
1160 (dired-mark-prompt arg files) "? ")))))
1162 (defun dired-map-over-marks-check (fun arg op-symbol &optional show-progress)
1163 ; "Map FUN over marked files (with second ARG like in dired-map-over-marks)
1164 ; and display failures.
1166 ; FUN takes zero args. It returns non-nil (the offending object, e.g.
1167 ; the short form of the filename) for a failure and probably logs a
1168 ; detailed error explanation using function `dired-log'.
1170 ; OP-SYMBOL is a symbol describing the operation performed (e.g.
1171 ; `compress'). It is used with `dired-mark-pop-up' to prompt the user
1172 ; (e.g. with `Compress * [2 files]? ') and to display errors (e.g.
1173 ; `Failed to compress 1 of 2 files - type W to see why ("foo")')
1175 ; SHOW-PROGRESS if non-nil means redisplay dired after each file."
1176 (if (dired-mark-confirm op-symbol arg)
1177 (let* ((total-list;; all of FUN's return values
1178 (dired-map-over-marks (funcall fun) arg show-progress))
1179 (total (length total-list))
1180 (failures (delq nil total-list))
1181 (count (length failures))
1182 (string (if (eq op-symbol 'compress) "Compress or uncompress"
1183 (capitalize (symbol-name op-symbol)))))
1184 (if (not failures)
1185 (message "%s: %d file%s."
1186 string total (dired-plural-s total))
1187 ;; end this bunch of errors:
1188 (dired-log-summary
1189 (format "Failed to %s %d of %d file%s"
1190 (downcase string) count total (dired-plural-s total))
1191 failures)))))
1193 ;;;###autoload
1194 (defun dired-query (sym prompt &rest args)
1195 "Format PROMPT with ARGS, query user, and store the result in SYM.
1196 The return value is either nil or t.
1198 The user may type y or SPC to accept once; n or DEL to skip once;
1199 ! to accept this and subsequent queries; or q or ESC to decline
1200 this and subsequent queries.
1202 If SYM is already bound to a non-nil value, this function may
1203 return automatically without querying the user. If SYM is !,
1204 return t; if SYM is q or ESC, return nil."
1205 (let* ((char (symbol-value sym))
1206 (char-choices '(?y ?\s ?n ?\177 ?! ?q ?\e)))
1207 (cond ((eq char ?!)
1208 t) ; accept, and don't ask again
1209 ((memq char '(?q ?\e))
1210 nil) ; skip, and don't ask again
1211 (t ; no previous answer - ask now
1212 (setq prompt
1213 (concat (apply #'format-message prompt args)
1214 (if help-form
1215 (format " [Type yn!q or %s] "
1216 (key-description (vector help-char)))
1217 " [Type y, n, q or !] ")))
1218 (set sym (setq char (read-char-choice prompt char-choices)))
1219 (if (memq char '(?y ?\s ?!)) t)))))
1222 ;;;###autoload
1223 (defun dired-do-compress (&optional arg)
1224 "Compress or uncompress marked (or next ARG) files."
1225 (interactive "P")
1226 (dired-map-over-marks-check #'dired-compress arg 'compress t))
1228 ;; Commands for Emacs Lisp files - load and byte compile
1230 (defun dired-byte-compile ()
1231 ;; Return nil for success, offending file name else.
1232 (let* ((filename (dired-get-filename))
1233 elc-file buffer-read-only failure)
1234 (condition-case err
1235 (save-excursion (byte-compile-file filename))
1236 (error
1237 (setq failure err)))
1238 (setq elc-file (byte-compile-dest-file filename))
1239 (or (file-exists-p elc-file)
1240 (setq failure t))
1241 (if failure
1242 (progn
1243 (dired-log "Byte compile error for %s:\n%s\n" filename failure)
1244 (dired-make-relative filename))
1245 (dired-remove-file elc-file)
1246 (forward-line) ; insert .elc after its .el file
1247 (dired-add-file elc-file)
1248 nil)))
1250 ;;;###autoload
1251 (defun dired-do-byte-compile (&optional arg)
1252 "Byte compile marked (or next ARG) Emacs Lisp files."
1253 (interactive "P")
1254 (dired-map-over-marks-check #'dired-byte-compile arg 'byte-compile t))
1256 (defun dired-load ()
1257 ;; Return nil for success, offending file name else.
1258 (let ((file (dired-get-filename)) failure)
1259 (condition-case err
1260 (load file nil nil t)
1261 (error (setq failure err)))
1262 (if (not failure)
1264 (dired-log "Load error for %s:\n%s\n" file failure)
1265 (dired-make-relative file))))
1267 ;;;###autoload
1268 (defun dired-do-load (&optional arg)
1269 "Load the marked (or next ARG) Emacs Lisp files."
1270 (interactive "P")
1271 (dired-map-over-marks-check #'dired-load arg 'load t))
1273 ;;;###autoload
1274 (defun dired-do-redisplay (&optional arg test-for-subdir)
1275 "Redisplay all marked (or next ARG) files.
1276 If on a subdir line, redisplay that subdirectory. In that case,
1277 a prefix arg lets you edit the `ls' switches used for the new listing.
1279 Dired remembers switches specified with a prefix arg, so that reverting
1280 the buffer will not reset them. However, using `dired-undo' to re-insert
1281 or delete subdirectories can bypass this machinery. Hence, you sometimes
1282 may have to reset some subdirectory switches after a `dired-undo'.
1283 You can reset all subdirectory switches to the default using
1284 \\<dired-mode-map>\\[dired-reset-subdir-switches].
1285 See Info node `(emacs)Subdir switches' for more details."
1286 ;; Moves point if the next ARG files are redisplayed.
1287 (interactive "P\np")
1288 (if (and test-for-subdir (dired-get-subdir))
1289 (let* ((dir (dired-get-subdir))
1290 (switches (cdr (assoc-string dir dired-switches-alist))))
1291 (dired-insert-subdir
1293 (when arg
1294 (read-string "Switches for listing: "
1295 (or switches
1296 dired-subdir-switches
1297 dired-actual-switches)))))
1298 (message "Redisplaying...")
1299 ;; message much faster than making dired-map-over-marks show progress
1300 (dired-uncache
1301 (if (consp dired-directory) (car dired-directory) dired-directory))
1302 (dired-map-over-marks (let ((fname (dired-get-filename nil t))
1303 ;; Postpone readin hook till we map
1304 ;; over all marked files (Bug#6810).
1305 (dired-after-readin-hook nil))
1306 (if (not fname)
1307 (error "No file on this line")
1308 (message "Redisplaying... %s" fname)
1309 (dired-update-file-line fname)))
1310 arg)
1311 (run-hooks 'dired-after-readin-hook)
1312 (dired-move-to-filename)
1313 (message "Redisplaying...done")))
1315 (defun dired-reset-subdir-switches ()
1316 "Set `dired-switches-alist' to nil and revert dired buffer."
1317 (interactive)
1318 (setq dired-switches-alist nil)
1319 (revert-buffer))
1321 (defun dired-update-file-line (file)
1322 ;; Delete the current line, and insert an entry for FILE.
1323 ;; If FILE is nil, then just delete the current line.
1324 ;; Keeps any marks that may be present in column one (doing this
1325 ;; here is faster than with dired-add-entry's optional arg).
1326 ;; Does not update other dired buffers. Use dired-relist-entry for that.
1327 (let* ((opoint (line-beginning-position))
1328 (char (char-after opoint))
1329 (buffer-read-only))
1330 (delete-region opoint (progn (forward-line 1) (point)))
1331 (if file
1332 (progn
1333 (dired-add-entry file nil t)
1334 ;; Replace space by old marker without moving point.
1335 ;; Faster than goto+insdel inside a save-excursion?
1336 (when char
1337 (subst-char-in-region opoint (1+ opoint) ?\040 char)))))
1338 (dired-move-to-filename))
1340 ;;;###autoload
1341 (defun dired-add-file (filename &optional marker-char)
1342 (dired-fun-in-all-buffers
1343 (file-name-directory filename) (file-name-nondirectory filename)
1344 #'dired-add-entry filename marker-char))
1346 (defvar dired-omit-mode)
1347 (declare-function dired-omit-regexp "dired-x" ())
1348 (defvar dired-omit-localp)
1350 (defun dired-add-entry (filename &optional marker-char relative)
1351 "Add a new dired entry for FILENAME.
1352 Optionally mark it with MARKER-CHAR (a character, else uses
1353 `dired-marker-char'). Note that this adds the entry `out of order'
1354 if files are sorted by time, etc.
1355 Skips files that match `dired-trivial-filenames'.
1356 Exposes hidden subdirectories if a file is added there.
1358 If `dired-x' is loaded and `dired-omit-mode' is enabled, skips
1359 files matching `dired-omit-regexp'."
1360 (if (or (not (featurep 'dired-x))
1361 (not dired-omit-mode)
1362 ;; Avoid calling ls for files that are going to be omitted anyway.
1363 (let ((omit-re (dired-omit-regexp)))
1364 (or (string= omit-re "")
1365 (not (string-match-p omit-re
1366 (cond
1367 ((eq 'no-dir dired-omit-localp)
1368 filename)
1369 ((eq t dired-omit-localp)
1370 (dired-make-relative filename))
1372 (dired-make-absolute
1373 filename
1374 (file-name-directory filename)))))))))
1375 ;; Do it!
1376 (progn
1377 (setq filename (directory-file-name filename))
1378 ;; Entry is always for files, even if they happen to also be directories
1379 (let* ((opoint (point))
1380 (cur-dir (dired-current-directory))
1381 (directory (if relative cur-dir (file-name-directory filename)))
1382 reason)
1383 (setq filename
1384 (if relative
1385 (file-relative-name filename directory)
1386 (file-name-nondirectory filename))
1387 reason
1388 (catch 'not-found
1389 (if (string= directory cur-dir)
1390 (progn
1391 (skip-chars-forward "^\r\n")
1392 (if (eq (following-char) ?\r)
1393 (dired-unhide-subdir))
1394 ;; We are already where we should be, except when
1395 ;; point is before the subdir line or its total line.
1396 (let ((p (dired-after-subdir-garbage cur-dir)))
1397 (if (< (point) p)
1398 (goto-char p))))
1399 ;; else try to find correct place to insert
1400 (if (dired-goto-subdir directory)
1401 (progn ;; unhide if necessary
1402 (if (= (following-char) ?\r)
1403 ;; Point is at end of subdir line.
1404 (dired-unhide-subdir))
1405 ;; found - skip subdir and `total' line
1406 ;; and uninteresting files like . and ..
1407 ;; This better not move into the next subdir!
1408 (dired-goto-next-nontrivial-file))
1409 ;; not found
1410 (throw 'not-found "Subdir not found")))
1411 (let (buffer-read-only opoint)
1412 (beginning-of-line)
1413 (setq opoint (point))
1414 ;; Don't expand `.'.
1415 ;; Show just the file name within directory.
1416 (let ((default-directory directory))
1417 (dired-insert-directory
1418 directory
1419 (concat dired-actual-switches " -d")
1420 (list filename)))
1421 (goto-char opoint)
1422 ;; Put in desired marker char.
1423 (when marker-char
1424 (let ((dired-marker-char
1425 (if (integerp marker-char) marker-char
1426 dired-marker-char)))
1427 (dired-mark nil)))
1428 ;; Compensate for a bug in ange-ftp.
1429 ;; It inserts the file's absolute name, rather than
1430 ;; the relative one. That may be hard to fix since it
1431 ;; is probably controlled by something in ftp.
1432 (goto-char opoint)
1433 (let ((inserted-name (dired-get-filename 'verbatim)))
1434 (if (file-name-directory inserted-name)
1435 (let (props)
1436 (end-of-line)
1437 (forward-char (- (length inserted-name)))
1438 (setq props (text-properties-at (point)))
1439 (delete-char (length inserted-name))
1440 (let ((pt (point)))
1441 (insert filename)
1442 (set-text-properties pt (point) props))
1443 (forward-char 1))
1444 (forward-line 1)))
1445 (forward-line -1)
1446 (if dired-after-readin-hook
1447 ;; The subdir-alist is not affected...
1448 (save-excursion ; ...so we can run it right now:
1449 (save-restriction
1450 (beginning-of-line)
1451 (narrow-to-region (point)
1452 (line-beginning-position 2))
1453 (run-hooks 'dired-after-readin-hook))))
1454 (dired-move-to-filename))
1455 ;; return nil if all went well
1456 nil))
1457 (if reason ; don't move away on failure
1458 (goto-char opoint))
1459 (not reason))) ; return t on success, nil else
1460 ;; Don't do it (dired-omit-mode).
1461 ;; Return t for success (perhaps we should return file-exists-p).
1464 (defun dired-after-subdir-garbage (dir)
1465 ;; Return pos of first file line of DIR, skipping header and total
1466 ;; or wildcard lines.
1467 ;; Important: never moves into the next subdir.
1468 ;; DIR is assumed to be unhidden.
1469 (save-excursion
1470 (or (dired-goto-subdir dir) (error "This cannot happen"))
1471 (forward-line 1)
1472 (while (and (not (eolp)) ; don't cross subdir boundary
1473 (not (dired-move-to-filename)))
1474 (forward-line 1))
1475 (point)))
1477 ;;;###autoload
1478 (defun dired-remove-file (file)
1479 (dired-fun-in-all-buffers
1480 (file-name-directory file) (file-name-nondirectory file)
1481 #'dired-remove-entry file))
1483 (defun dired-remove-entry (file)
1484 (save-excursion
1485 (and (dired-goto-file file)
1486 (let (buffer-read-only)
1487 (delete-region (progn (beginning-of-line) (point))
1488 (line-beginning-position 2))))))
1490 ;;;###autoload
1491 (defun dired-relist-file (file)
1492 "Create or update the line for FILE in all Dired buffers it would belong in."
1493 (dired-fun-in-all-buffers (file-name-directory file)
1494 (file-name-nondirectory file)
1495 #'dired-relist-entry file))
1497 (defun dired-relist-entry (file)
1498 ;; Relist the line for FILE, or just add it if it did not exist.
1499 ;; FILE must be an absolute file name.
1500 (let (buffer-read-only marker)
1501 ;; If cursor is already on FILE's line delete-region will cause
1502 ;; save-excursion to fail because of floating makers,
1503 ;; moving point to beginning of line. Sigh.
1504 (save-excursion
1505 (and (dired-goto-file file)
1506 (delete-region (progn (beginning-of-line)
1507 (setq marker (following-char))
1508 (point))
1509 (line-beginning-position 2)))
1510 (setq file (directory-file-name file))
1511 (dired-add-entry file (if (eq ?\040 marker) nil marker)))))
1513 ;;; Copy, move/rename, making hard and symbolic links
1515 (defcustom dired-backup-overwrite nil
1516 "Non-nil if Dired should ask about making backups before overwriting files.
1517 Special value `always' suppresses confirmation."
1518 :type '(choice (const :tag "off" nil)
1519 (const :tag "suppress" always)
1520 (other :tag "ask" t))
1521 :group 'dired)
1523 ;; This is a fluid var used in dired-handle-overwrite. It should be
1524 ;; let-bound whenever dired-copy-file etc are called. See
1525 ;; dired-create-files for an example.
1526 (defvar dired-overwrite-confirmed)
1528 (defun dired-handle-overwrite (to)
1529 ;; Save old version of file TO that is to be overwritten.
1530 ;; `dired-overwrite-confirmed' and `overwrite-backup-query' are fluid vars
1531 ;; from dired-create-files.
1532 (let (backup)
1533 (when (and dired-backup-overwrite
1534 dired-overwrite-confirmed
1535 (setq backup (car (find-backup-file-name to)))
1536 (or (eq 'always dired-backup-overwrite)
1537 (dired-query 'overwrite-backup-query
1538 "Make backup for existing file `%s'? "
1539 to)))
1540 (rename-file to backup 0) ; confirm overwrite of old backup
1541 (dired-relist-entry backup))))
1543 ;;;###autoload
1544 (defun dired-copy-file (from to ok-flag)
1545 (dired-handle-overwrite to)
1546 (dired-copy-file-recursive from to ok-flag dired-copy-preserve-time t
1547 dired-recursive-copies))
1549 (declare-function make-symbolic-link "fileio.c")
1551 (defcustom dired-create-destination-dirs nil
1552 "Whether Dired should create destination dirs when copying/removing files.
1553 If nil, don't create them.
1554 If `always', create them without ask.
1555 If `ask', ask for user confirmation."
1556 :type '(choice (const :tag "Never create non-existent dirs" nil)
1557 (const :tag "Always create non-existent dirs" always)
1558 (const :tag "Ask for user confirmation" ask))
1559 :group 'dired
1560 :version "27.1")
1562 (defun dired-maybe-create-dirs (dir)
1563 "Create DIR if doesn't exist according to `dired-create-destination-dirs'."
1564 (when (and dired-create-destination-dirs (not (file-exists-p dir)))
1565 (if (or (eq dired-create-destination-dirs 'always)
1566 (yes-or-no-p (format "Create destination dir `%s'? " dir)))
1567 (dired-create-directory dir))))
1569 (defun dired-copy-file-recursive (from to ok-flag &optional
1570 preserve-time top recursive)
1571 (when (and (eq t (car (file-attributes from)))
1572 (file-in-directory-p to from))
1573 (error "Cannot copy `%s' into its subdirectory `%s'" from to))
1574 (let ((attrs (file-attributes from)))
1575 (if (and recursive
1576 (eq t (car attrs))
1577 (or (eq recursive 'always)
1578 (yes-or-no-p (format "Recursive copies of %s? " from))))
1579 (copy-directory from to preserve-time)
1580 (or top (dired-handle-overwrite to))
1581 (condition-case err
1582 (if (stringp (car attrs))
1583 ;; It is a symlink
1584 (make-symbolic-link (car attrs) to ok-flag)
1585 (dired-maybe-create-dirs (file-name-directory to))
1586 (copy-file from to ok-flag preserve-time))
1587 (file-date-error
1588 (push (dired-make-relative from)
1589 dired-create-files-failures)
1590 (dired-log "Can't set date on %s:\n%s\n" from err))))))
1592 ;;;###autoload
1593 (defun dired-rename-file (file newname ok-if-already-exists)
1594 (dired-handle-overwrite newname)
1595 (dired-maybe-create-dirs (file-name-directory newname))
1596 (rename-file file newname ok-if-already-exists) ; error is caught in -create-files
1597 ;; Silently rename the visited file of any buffer visiting this file.
1598 (and (get-file-buffer file)
1599 (with-current-buffer (get-file-buffer file)
1600 (set-visited-file-name newname nil t)))
1601 (dired-remove-file file)
1602 ;; See if it's an inserted subdir, and rename that, too.
1603 (dired-rename-subdir file newname))
1605 (defun dired-rename-subdir (from-dir to-dir)
1606 (setq from-dir (file-name-as-directory from-dir)
1607 to-dir (file-name-as-directory to-dir))
1608 (dired-fun-in-all-buffers from-dir nil
1609 #'dired-rename-subdir-1 from-dir to-dir)
1610 ;; Update visited file name of all affected buffers
1611 (let ((expanded-from-dir (expand-file-name from-dir))
1612 (blist (buffer-list)))
1613 (while blist
1614 (with-current-buffer (car blist)
1615 (if (and buffer-file-name
1616 (dired-in-this-tree buffer-file-name expanded-from-dir))
1617 (let ((modflag (buffer-modified-p))
1618 (to-file (dired-replace-in-string
1619 (concat "^" (regexp-quote from-dir))
1620 to-dir
1621 buffer-file-name)))
1622 (set-visited-file-name to-file)
1623 (set-buffer-modified-p modflag))))
1624 (setq blist (cdr blist)))))
1626 (defun dired-rename-subdir-1 (dir to)
1627 ;; Rename DIR to TO in headerlines and dired-subdir-alist, if DIR or
1628 ;; one of its subdirectories is expanded in this buffer.
1629 (let ((expanded-dir (expand-file-name dir))
1630 (alist dired-subdir-alist)
1631 (elt nil))
1632 (while alist
1633 (setq elt (car alist)
1634 alist (cdr alist))
1635 (if (dired-in-this-tree (car elt) expanded-dir)
1636 ;; ELT's subdir is affected by the rename
1637 (dired-rename-subdir-2 elt dir to)))
1638 (if (equal dir default-directory)
1639 ;; if top level directory was renamed, lots of things have to be
1640 ;; updated:
1641 (progn
1642 (dired-unadvertise dir) ; we no longer dired DIR...
1643 (setq default-directory to
1644 dired-directory (expand-file-name;; this is correct
1645 ;; with and without wildcards
1646 (file-name-nondirectory (if (stringp dired-directory)
1647 dired-directory
1648 (car dired-directory)))
1649 to))
1650 (let ((new-name (file-name-nondirectory
1651 (directory-file-name (if (stringp dired-directory)
1652 dired-directory
1653 (car dired-directory))))))
1654 ;; try to rename buffer, but just leave old name if new
1655 ;; name would already exist (don't try appending "<%d>")
1656 (or (get-buffer new-name)
1657 (rename-buffer new-name)))
1658 ;; ... we dired TO now:
1659 (dired-advertise)))))
1661 (defun dired-rename-subdir-2 (elt dir to)
1662 ;; Update the headerline and dired-subdir-alist element, as well as
1663 ;; dired-switches-alist element, of directory described by
1664 ;; alist-element ELT to reflect the moving of DIR to TO. Thus, ELT
1665 ;; describes either DIR itself or a subdir of DIR.
1666 (save-excursion
1667 (let ((regexp (regexp-quote (directory-file-name dir)))
1668 (newtext (directory-file-name to))
1669 buffer-read-only)
1670 (goto-char (dired-get-subdir-min elt))
1671 ;; Update subdir headerline in buffer
1672 (if (not (looking-at dired-subdir-regexp))
1673 (error "%s not found where expected - dired-subdir-alist broken?"
1674 dir)
1675 (goto-char (match-beginning 1))
1676 (if (re-search-forward regexp (match-end 1) t)
1677 (replace-match newtext t t)
1678 (error "Expected to find `%s' in headerline of %s" dir (car elt))))
1679 ;; Update buffer-local dired-subdir-alist and dired-switches-alist
1680 (let ((cons (assoc-string (car elt) dired-switches-alist))
1681 (cur-dir (dired-normalize-subdir
1682 (dired-replace-in-string regexp newtext (car elt)))))
1683 (setcar elt cur-dir)
1684 (when cons (setcar cons cur-dir))))))
1686 ;; Bound in dired-create-files
1687 (defvar overwrite-query)
1688 (defvar overwrite-backup-query)
1690 ;; The basic function for half a dozen variations on cp/mv/ln/ln -s.
1691 (defun dired-create-files (file-creator operation fn-list name-constructor
1692 &optional marker-char)
1693 "Create one or more new files from a list of existing files FN-LIST.
1694 This function also handles querying the user, updating Dired
1695 buffers, and displaying a success or failure message.
1697 FILE-CREATOR should be a function. It is called once for each
1698 file in FN-LIST, and must create a new file, querying the user
1699 and updating Dired buffers as necessary. It should accept three
1700 arguments: the old file name, the new name, and an argument
1701 OK-IF-ALREADY-EXISTS with the same meaning as in `copy-file'.
1703 OPERATION should be a capitalized string describing the operation
1704 performed (e.g. `Copy'). It is used for error logging.
1706 FN-LIST is the list of files to copy (full absolute file names).
1708 NAME-CONSTRUCTOR should be a function accepting a single
1709 argument, the name of an old file, and returning either the
1710 corresponding new file name or nil to skip.
1712 If optional argument MARKER-CHAR is non-nil, mark each
1713 newly-created file's Dired entry with the character MARKER-CHAR,
1714 or with the current marker character if MARKER-CHAR is t."
1715 (let (dired-create-files-failures failures
1716 skipped (success-count 0) (total (length fn-list)))
1717 (let (to overwrite-query
1718 overwrite-backup-query) ; for dired-handle-overwrite
1719 (dolist (from fn-list)
1720 (setq to (funcall name-constructor from))
1721 (if (equal to from)
1722 (progn
1723 (setq to nil)
1724 (dired-log "Cannot %s to same file: %s\n"
1725 (downcase operation) from)))
1726 (if (not to)
1727 (setq skipped (cons (dired-make-relative from) skipped))
1728 (let* ((overwrite (file-exists-p to))
1729 (dired-overwrite-confirmed ; for dired-handle-overwrite
1730 (and overwrite
1731 (let ((help-form '(format-message "\
1732 Type SPC or `y' to overwrite file `%s',
1733 DEL or `n' to skip to next,
1734 ESC or `q' to not overwrite any of the remaining files,
1735 `!' to overwrite all remaining files with no more questions." to)))
1736 (dired-query 'overwrite-query
1737 "Overwrite `%s'?" to))))
1738 ;; must determine if FROM is marked before file-creator
1739 ;; gets a chance to delete it (in case of a move).
1740 (actual-marker-char
1741 (cond ((integerp marker-char) marker-char)
1742 (marker-char (dired-file-marker from)) ; slow
1743 (t nil))))
1744 ;; Handle the `dired-copy-file' file-creator specially
1745 ;; When copying a directory to another directory or
1746 ;; possibly to itself or one of its subdirectories.
1747 ;; e.g "~/foo/" => "~/test/"
1748 ;; or "~/foo/" =>"~/foo/"
1749 ;; or "~/foo/ => ~/foo/bar/")
1750 ;; In this case the 'name-constructor' have set the destination
1751 ;; TO to "~/test/foo" because the old emacs23 behavior
1752 ;; of `copy-directory' was to not create the subdirectory
1753 ;; and instead copy the contents.
1754 ;; With the new behavior of `copy-directory'
1755 ;; (similar to the `cp' shell command) we don't
1756 ;; need such a construction of the target directory,
1757 ;; so modify the destination TO to "~/test/" instead of "~/test/foo/".
1758 (let ((destname (file-name-directory to)))
1759 (when (and (file-directory-p from)
1760 (file-directory-p to)
1761 (eq file-creator 'dired-copy-file))
1762 (setq to destname))
1763 ;; If DESTNAME is a subdirectory of FROM, not a symlink,
1764 ;; and the method in use is copying, signal an error.
1765 (and (eq t (car (file-attributes destname)))
1766 (eq file-creator 'dired-copy-file)
1767 (file-in-directory-p destname from)
1768 (error "Cannot copy `%s' into its subdirectory `%s'"
1769 from to)))
1770 (condition-case err
1771 (progn
1772 (funcall file-creator from to dired-overwrite-confirmed)
1773 (if overwrite
1774 ;; If we get here, file-creator hasn't been aborted
1775 ;; and the old entry (if any) has to be deleted
1776 ;; before adding the new entry.
1777 (dired-remove-file to))
1778 (setq success-count (1+ success-count))
1779 (message "%s: %d of %d" operation success-count total)
1780 (dired-add-file to actual-marker-char))
1781 (file-error ; FILE-CREATOR aborted
1782 (progn
1783 (push (dired-make-relative from)
1784 failures)
1785 (dired-log "%s `%s' to `%s' failed:\n%s\n"
1786 operation from to err))))))))
1787 (cond
1788 (dired-create-files-failures
1789 (setq failures (nconc failures dired-create-files-failures))
1790 (dired-log-summary
1791 (format "%s failed for %d file%s in %d requests"
1792 operation (length failures)
1793 (dired-plural-s (length failures))
1794 total)
1795 failures))
1796 (failures
1797 (dired-log-summary
1798 (format "%s failed for %d of %d file%s"
1799 operation (length failures)
1800 total (dired-plural-s total))
1801 failures))
1802 (skipped
1803 (dired-log-summary
1804 (format "%s: %d of %d file%s skipped"
1805 operation (length skipped) total
1806 (dired-plural-s total))
1807 skipped))
1809 (message "%s: %s file%s"
1810 operation success-count (dired-plural-s success-count)))))
1811 (dired-move-to-filename))
1813 (defun dired-do-create-files (op-symbol file-creator operation arg
1814 &optional marker-char op1
1815 how-to)
1816 "Create a new file for each marked file.
1817 Prompt user for a target directory in which to create the new
1818 files. The target may also be a non-directory file, if only
1819 one file is marked. The initial suggestion for target is the
1820 Dired buffer's current directory (or, if `dired-dwim-target' is
1821 non-nil, the current directory of a neighboring Dired window).
1822 OP-SYMBOL is the symbol for the operation. Function `dired-mark-pop-up'
1823 will determine whether pop-ups are appropriate for this OP-SYMBOL.
1824 FILE-CREATOR and OPERATION as in `dired-create-files'.
1825 ARG as in `dired-get-marked-files'.
1826 Optional arg MARKER-CHAR as in `dired-create-files'.
1827 Optional arg OP1 is an alternate form for OPERATION if there is
1828 only one file.
1829 Optional arg HOW-TO determines how to treat the target.
1830 If HOW-TO is nil, use `file-directory-p' to determine if the
1831 target is a directory. If so, the marked file(s) are created
1832 inside that directory. Otherwise, the target is a plain file;
1833 an error is raised unless there is exactly one marked file.
1834 If HOW-TO is t, target is always treated as a plain file.
1835 Otherwise, HOW-TO should be a function of one argument, TARGET.
1836 If its return value is nil, TARGET is regarded as a plain file.
1837 If it return value is a list, TARGET is a generalized
1838 directory (e.g. some sort of archive). The first element of
1839 this list must be a function with at least four arguments:
1840 operation - as OPERATION above.
1841 rfn-list - list of the relative names for the marked files.
1842 fn-list - list of the absolute names for the marked files.
1843 target - the name of the target itself.
1844 The rest of into-dir are optional arguments.
1845 For any other return value, TARGET is treated as a directory."
1846 (or op1 (setq op1 operation))
1847 (let* ((fn-list (dired-get-marked-files nil arg))
1848 (rfn-list (mapcar #'dired-make-relative fn-list))
1849 (dired-one-file ; fluid variable inside dired-create-files
1850 (and (consp fn-list) (null (cdr fn-list)) (car fn-list)))
1851 (target-dir (dired-dwim-target-directory))
1852 (default (and dired-one-file
1853 (not dired-dwim-target) ; Bug#25609
1854 (expand-file-name (file-name-nondirectory (car fn-list))
1855 target-dir)))
1856 (defaults (dired-dwim-target-defaults fn-list target-dir))
1857 (target (expand-file-name ; fluid variable inside dired-create-files
1858 (minibuffer-with-setup-hook
1859 (lambda ()
1860 (set (make-local-variable 'minibuffer-default-add-function) nil)
1861 (setq minibuffer-default defaults))
1862 (dired-mark-read-file-name
1863 (concat (if dired-one-file op1 operation) " %s to: ")
1864 target-dir op-symbol arg rfn-list default))))
1865 (into-dir (cond ((null how-to)
1866 ;; Allow users to change the letter case of
1867 ;; a directory on a case-insensitive
1868 ;; filesystem. If we don't test these
1869 ;; conditions up front, file-directory-p
1870 ;; below will return t on a case-insensitive
1871 ;; filesystem, and Emacs will try to move
1872 ;; foo -> foo/foo, which fails.
1873 (if (and (file-name-case-insensitive-p (car fn-list))
1874 (eq op-symbol 'move)
1875 dired-one-file
1876 (string= (downcase
1877 (expand-file-name (car fn-list)))
1878 (downcase
1879 (expand-file-name target)))
1880 (not (string=
1881 (file-name-nondirectory (car fn-list))
1882 (file-name-nondirectory target))))
1884 (file-directory-p target)))
1885 ((eq how-to t) nil)
1886 (t (funcall how-to target)))))
1887 (if (and (consp into-dir) (functionp (car into-dir)))
1888 (apply (car into-dir) operation rfn-list fn-list target (cdr into-dir))
1889 (if (not (or dired-one-file into-dir))
1890 (error "Marked %s: target must be a directory: %s" operation target))
1891 ;; rename-file bombs when moving directories unless we do this:
1892 (or into-dir (setq target (directory-file-name target)))
1893 (dired-create-files
1894 file-creator operation fn-list
1895 (if into-dir ; target is a directory
1896 ;; This function uses fluid variable target when called
1897 ;; inside dired-create-files:
1898 (lambda (from)
1899 (expand-file-name (file-name-nondirectory from) target))
1900 (lambda (_from) target))
1901 marker-char))))
1903 ;; Read arguments for a marked-files command that wants a file name,
1904 ;; perhaps popping up the list of marked files.
1905 ;; ARG is the prefix arg and indicates whether the files came from
1906 ;; marks (ARG=nil) or a repeat factor (integerp ARG).
1907 ;; If the current file was used, the list has but one element and ARG
1908 ;; does not matter. (It is non-nil, non-integer in that case, namely '(4)).
1909 ;; DEFAULT is the default value to return if the user just hits RET;
1910 ;; if it is omitted or nil, then the name of the directory is used.
1912 (defun dired-mark-read-file-name (prompt dir op-symbol arg files
1913 &optional default)
1914 (dired-mark-pop-up
1915 nil op-symbol files
1916 #'read-file-name
1917 (format prompt (dired-mark-prompt arg files)) dir default))
1919 (defun dired-dwim-target-directory ()
1920 ;; Try to guess which target directory the user may want.
1921 ;; If there is a dired buffer displayed in one of the next windows,
1922 ;; use its current subdir, else use current subdir of this dired buffer.
1923 (let ((this-dir (and (eq major-mode 'dired-mode)
1924 (dired-current-directory))))
1925 ;; non-dired buffer may want to profit from this function, e.g. vm-uudecode
1926 (if dired-dwim-target
1927 (let* ((other-win (get-window-with-predicate
1928 (lambda (window)
1929 (with-current-buffer (window-buffer window)
1930 (eq major-mode 'dired-mode)))))
1931 (other-dir (and other-win
1932 (with-current-buffer (window-buffer other-win)
1933 (and (eq major-mode 'dired-mode)
1934 (dired-current-directory))))))
1935 (or other-dir this-dir))
1936 this-dir)))
1938 (defun dired-dwim-target-defaults (fn-list target-dir)
1939 ;; Return a list of default values for file-reading functions in Dired.
1940 ;; This list may contain directories from Dired buffers in other windows.
1941 ;; `fn-list' is a list of file names used to build a list of defaults.
1942 ;; When nil or more than one element, a list of defaults will
1943 ;; contain only directory names. `target-dir' is a directory name
1944 ;; to exclude from the returned list, for the case when this
1945 ;; directory name is already presented in initial input.
1946 ;; For Dired operations that support `dired-dwim-target',
1947 ;; the argument `target-dir' should have the value returned
1948 ;; from `dired-dwim-target-directory'.
1949 (let ((dired-one-file
1950 (and (consp fn-list) (null (cdr fn-list)) (car fn-list)))
1951 (current-dir (and (eq major-mode 'dired-mode)
1952 (dired-current-directory)))
1953 dired-dirs)
1954 ;; Get a list of directories of visible buffers in dired-mode.
1955 (walk-windows (lambda (w)
1956 (with-current-buffer (window-buffer w)
1957 (and (eq major-mode 'dired-mode)
1958 (push (dired-current-directory) dired-dirs)))))
1959 ;; Force the current dir to be the first in the list.
1960 (setq dired-dirs
1961 (delete-dups (delq nil (cons current-dir (nreverse dired-dirs)))))
1962 ;; Remove the target dir (if specified) or the current dir from
1963 ;; default values, because it should be already in initial input.
1964 (setq dired-dirs (delete (or target-dir current-dir) dired-dirs))
1965 ;; Return a list of default values.
1966 (if dired-one-file
1967 ;; For one file operation, provide a list that contains
1968 ;; other directories, other directories with the appended filename
1969 ;; and the current directory with the appended filename, e.g.
1970 ;; 1. /TARGET-DIR/
1971 ;; 2. /TARGET-DIR/FILENAME
1972 ;; 3. /CURRENT-DIR/FILENAME
1973 (append dired-dirs
1974 (mapcar (lambda (dir)
1975 (expand-file-name
1976 (file-name-nondirectory (car fn-list)) dir))
1977 (reverse dired-dirs))
1978 (list (expand-file-name
1979 (file-name-nondirectory (car fn-list))
1980 (or target-dir current-dir))))
1981 ;; For multi-file operation, return only a list of other directories.
1982 dired-dirs)))
1985 ;;;###autoload
1986 (defun dired-create-directory (directory)
1987 "Create a directory called DIRECTORY.
1988 Parent directories of DIRECTORY are created as needed.
1989 If DIRECTORY already exists, signal an error."
1990 (interactive
1991 (list (read-file-name "Create directory: " (dired-current-directory))))
1992 (let* ((expanded (directory-file-name (expand-file-name directory)))
1993 (try expanded) new)
1994 (if (file-exists-p expanded)
1995 (error "Cannot create directory %s: file exists" expanded))
1996 ;; Find the topmost nonexistent parent dir (variable `new')
1997 (while (and try (not (file-exists-p try)) (not (equal new try)))
1998 (setq new try
1999 try (directory-file-name (file-name-directory try))))
2000 (make-directory expanded t)
2001 (when new
2002 (dired-add-file new)
2003 (dired-move-to-filename))))
2005 (defun dired-into-dir-with-symlinks (target)
2006 (and (file-directory-p target)
2007 (not (file-symlink-p target))))
2008 ;; This may not always be what you want, especially if target is your
2009 ;; home directory and it happens to be a symbolic link, as is often the
2010 ;; case with NFS and automounters. Or if you want to make symlinks
2011 ;; into directories that themselves are only symlinks, also quite
2012 ;; common.
2014 ;; So we don't use this function as value for HOW-TO in
2015 ;; dired-do-symlink, which has the minor disadvantage of
2016 ;; making links *into* a symlinked-dir, when you really wanted to
2017 ;; *overwrite* that symlink. In that (rare, I guess) case, you'll
2018 ;; just have to remove that symlink by hand before making your marked
2019 ;; symlinks.
2021 (defvar dired-copy-how-to-fn nil
2022 "Either nil or a function used by `dired-do-copy' to determine target.
2023 See HOW-TO argument for `dired-do-create-files'.")
2025 ;;;###autoload
2026 (defun dired-do-copy (&optional arg)
2027 "Copy all marked (or next ARG) files, or copy the current file.
2028 When operating on just the current file, prompt for the new name.
2030 When operating on multiple or marked files, prompt for a target
2031 directory, and make the new copies in that directory, with the
2032 same names as the original files. The initial suggestion for the
2033 target directory is the Dired buffer's current directory (or, if
2034 `dired-dwim-target' is non-nil, the current directory of a
2035 neighboring Dired window).
2037 If `dired-copy-preserve-time' is non-nil, this command preserves
2038 the modification time of each old file in the copy, similar to
2039 the \"-p\" option for the \"cp\" shell command.
2041 This command copies symbolic links by creating new ones, similar
2042 to the \"-d\" option for the \"cp\" shell command."
2043 (interactive "P")
2044 (let ((dired-recursive-copies dired-recursive-copies))
2045 (dired-do-create-files 'copy #'dired-copy-file
2046 "Copy"
2047 arg dired-keep-marker-copy
2048 nil dired-copy-how-to-fn)))
2050 ;;;###autoload
2051 (defun dired-do-symlink (&optional arg)
2052 "Make symbolic links to current file or all marked (or next ARG) files.
2053 When operating on just the current file, you specify the new name.
2054 When operating on multiple or marked files, you specify a directory
2055 and new symbolic links are made in that directory
2056 with the same names that the files currently have. The default
2057 suggested for the target directory depends on the value of
2058 `dired-dwim-target', which see.
2060 For relative symlinks, use \\[dired-do-relsymlink]."
2061 (interactive "P")
2062 (dired-do-create-files 'symlink #'make-symbolic-link
2063 "Symlink" arg dired-keep-marker-symlink))
2065 ;;;###autoload
2066 (defun dired-do-hardlink (&optional arg)
2067 "Add names (hard links) current file or all marked (or next ARG) files.
2068 When operating on just the current file, you specify the new name.
2069 When operating on multiple or marked files, you specify a directory
2070 and new hard links are made in that directory
2071 with the same names that the files currently have. The default
2072 suggested for the target directory depends on the value of
2073 `dired-dwim-target', which see."
2074 (interactive "P")
2075 (dired-do-create-files 'hardlink #'dired-hardlink
2076 "Hardlink" arg dired-keep-marker-hardlink))
2078 (defun dired-hardlink (file newname &optional ok-if-already-exists)
2079 (dired-handle-overwrite newname)
2080 ;; error is caught in -create-files
2081 (add-name-to-file file newname ok-if-already-exists)
2082 ;; Update the link count
2083 (dired-relist-file file))
2085 ;;;###autoload
2086 (defun dired-do-rename (&optional arg)
2087 "Rename current file or all marked (or next ARG) files.
2088 When renaming just the current file, you specify the new name.
2089 When renaming multiple or marked files, you specify a directory.
2090 This command also renames any buffers that are visiting the files.
2091 The default suggested for the target directory depends on the value
2092 of `dired-dwim-target', which see."
2093 (interactive "P")
2094 (dired-do-create-files 'move #'dired-rename-file
2095 "Move" arg dired-keep-marker-rename "Rename"))
2096 ;;;###end dired-cp.el
2098 ;;; 5K
2099 ;;;###begin dired-re.el
2100 (defvar rename-regexp-query)
2102 (defun dired-do-create-files-regexp
2103 (file-creator operation arg regexp newname &optional whole-name marker-char)
2104 ;; Create a new file for each marked file using regexps.
2105 ;; FILE-CREATOR and OPERATION as in dired-create-files.
2106 ;; ARG as in dired-get-marked-files.
2107 ;; Matches each marked file against REGEXP and constructs the new
2108 ;; filename from NEWNAME (like in function replace-match).
2109 ;; Optional arg WHOLE-NAME means match/replace the whole file name
2110 ;; instead of only the non-directory part of the file.
2111 ;; Optional arg MARKER-CHAR as in dired-create-files.
2112 (let* ((fn-list (dired-get-marked-files nil arg))
2113 (operation-prompt (concat operation " `%s' to `%s'?"))
2114 (rename-regexp-help-form (format-message "\
2115 Type SPC or `y' to %s one match, DEL or `n' to skip to next,
2116 `!' to %s all remaining matches with no more questions."
2117 (downcase operation)
2118 (downcase operation)))
2119 (regexp-name-constructor
2120 ;; Function to construct new filename using REGEXP and NEWNAME:
2121 (if whole-name ; easy (but rare) case
2122 (lambda (from)
2123 (let ((to (dired-string-replace-match regexp from newname))
2124 ;; must bind help-form directly around call to
2125 ;; dired-query
2126 (help-form rename-regexp-help-form))
2127 (if to
2128 (and (dired-query 'rename-regexp-query
2129 operation-prompt
2130 from
2133 (dired-log "%s: %s did not match regexp %s\n"
2134 operation from regexp))))
2135 ;; not whole-name, replace non-directory part only
2136 (lambda (from)
2137 (let* ((new (dired-string-replace-match
2138 regexp (file-name-nondirectory from) newname))
2139 (to (and new ; nil means there was no match
2140 (expand-file-name new
2141 (file-name-directory from))))
2142 (help-form rename-regexp-help-form))
2143 (if to
2144 (and (dired-query 'rename-regexp-query
2145 operation-prompt
2146 (dired-make-relative from)
2147 (dired-make-relative to))
2149 (dired-log "%s: %s did not match regexp %s\n"
2150 operation (file-name-nondirectory from) regexp))))))
2151 rename-regexp-query)
2152 (dired-create-files
2153 file-creator operation fn-list regexp-name-constructor marker-char)))
2155 (defun dired-mark-read-regexp (operation)
2156 ;; Prompt user about performing OPERATION.
2157 ;; Read and return list of: regexp newname arg whole-name.
2158 (let* ((whole-name
2159 (equal 0 (prefix-numeric-value current-prefix-arg)))
2160 (arg
2161 (if whole-name nil current-prefix-arg))
2162 (regexp
2163 (read-regexp
2164 (concat (if whole-name "Abs. " "") operation " from (regexp): ")
2165 nil 'dired-regexp-history))
2166 (newname
2167 (read-string
2168 (concat (if whole-name "Abs. " "") operation " " regexp " to: "))))
2169 (list regexp newname arg whole-name)))
2171 ;;;###autoload
2172 (defun dired-do-rename-regexp (regexp newname &optional arg whole-name)
2173 "Rename selected files whose names match REGEXP to NEWNAME.
2175 With non-zero prefix argument ARG, the command operates on the next ARG
2176 files. Otherwise, it operates on all the marked files, or the current
2177 file if none are marked.
2179 As each match is found, the user must type a character saying
2180 what to do with it. For directions, type \\[help-command] at that time.
2181 NEWNAME may contain \\=\\<n> or \\& as in `query-replace-regexp'.
2182 REGEXP defaults to the last regexp used.
2184 With a zero prefix arg, renaming by regexp affects the absolute file name.
2185 Normally, only the non-directory part of the file name is used and changed."
2186 (interactive (dired-mark-read-regexp "Rename"))
2187 (dired-do-create-files-regexp
2188 #'dired-rename-file
2189 "Rename" arg regexp newname whole-name dired-keep-marker-rename))
2191 ;;;###autoload
2192 (defun dired-do-copy-regexp (regexp newname &optional arg whole-name)
2193 "Copy selected files whose names match REGEXP to NEWNAME.
2194 See function `dired-do-rename-regexp' for more info."
2195 (interactive (dired-mark-read-regexp "Copy"))
2196 (let ((dired-recursive-copies nil)) ; No recursive copies.
2197 (dired-do-create-files-regexp
2198 #'dired-copy-file
2199 (if dired-copy-preserve-time "Copy [-p]" "Copy")
2200 arg regexp newname whole-name dired-keep-marker-copy)))
2202 ;;;###autoload
2203 (defun dired-do-hardlink-regexp (regexp newname &optional arg whole-name)
2204 "Hardlink selected files whose names match REGEXP to NEWNAME.
2205 See function `dired-do-rename-regexp' for more info."
2206 (interactive (dired-mark-read-regexp "HardLink"))
2207 (dired-do-create-files-regexp
2208 #'add-name-to-file
2209 "HardLink" arg regexp newname whole-name dired-keep-marker-hardlink))
2211 ;;;###autoload
2212 (defun dired-do-symlink-regexp (regexp newname &optional arg whole-name)
2213 "Symlink selected files whose names match REGEXP to NEWNAME.
2214 See function `dired-do-rename-regexp' for more info."
2215 (interactive (dired-mark-read-regexp "SymLink"))
2216 (dired-do-create-files-regexp
2217 #'make-symbolic-link
2218 "SymLink" arg regexp newname whole-name dired-keep-marker-symlink))
2220 (defvar rename-non-directory-query)
2222 (defun dired-create-files-non-directory
2223 (file-creator basename-constructor operation arg)
2224 ;; Perform FILE-CREATOR on the non-directory part of marked files
2225 ;; using function BASENAME-CONSTRUCTOR, with query for each file.
2226 ;; OPERATION like in dired-create-files, ARG as in dired-get-marked-files.
2227 (let (rename-non-directory-query)
2228 (dired-create-files
2229 file-creator
2230 operation
2231 (dired-get-marked-files nil arg)
2232 (lambda (from)
2233 (let ((to (concat (file-name-directory from)
2234 (funcall basename-constructor
2235 (file-name-nondirectory from)))))
2236 (and (let ((help-form (format-message "\
2237 Type SPC or `y' to %s one file, DEL or `n' to skip to next,
2238 `!' to %s all remaining matches with no more questions."
2239 (downcase operation)
2240 (downcase operation))))
2241 (dired-query 'rename-non-directory-query
2242 (concat operation " `%s' to `%s'")
2243 (dired-make-relative from)
2244 (dired-make-relative to)))
2245 to)))
2246 dired-keep-marker-rename)))
2248 (defun dired-rename-non-directory (basename-constructor operation arg)
2249 (dired-create-files-non-directory
2250 #'dired-rename-file
2251 basename-constructor operation arg))
2253 ;;;###autoload
2254 (defun dired-upcase (&optional arg)
2255 "Rename all marked (or next ARG) files to upper case."
2256 (interactive "P")
2257 (dired-rename-non-directory #'upcase "Rename upcase" arg))
2259 ;;;###autoload
2260 (defun dired-downcase (&optional arg)
2261 "Rename all marked (or next ARG) files to lower case."
2262 (interactive "P")
2263 (dired-rename-non-directory #'downcase "Rename downcase" arg))
2265 ;;;###end dired-re.el
2267 ;;; 13K
2268 ;;;###begin dired-ins.el
2270 ;;;###autoload
2271 (defun dired-maybe-insert-subdir (dirname &optional
2272 switches no-error-if-not-dir-p)
2273 "Insert this subdirectory into the same dired buffer.
2274 If it is already present, just move to it (type \\[dired-do-redisplay] to refresh),
2275 else inserts it at its natural place (as `ls -lR' would have done).
2276 With a prefix arg, you may edit the ls switches used for this listing.
2277 You can add `R' to the switches to expand the whole tree starting at
2278 this subdirectory.
2279 This function takes some pains to conform to `ls -lR' output.
2281 Dired remembers switches specified with a prefix arg, so that reverting
2282 the buffer will not reset them. However, using `dired-undo' to re-insert
2283 or delete subdirectories can bypass this machinery. Hence, you sometimes
2284 may have to reset some subdirectory switches after a `dired-undo'.
2285 You can reset all subdirectory switches to the default using
2286 \\<dired-mode-map>\\[dired-reset-subdir-switches].
2287 See Info node `(emacs)Subdir switches' for more details."
2288 (interactive
2289 (list (dired-get-filename)
2290 (if current-prefix-arg
2291 (read-string "Switches for listing: "
2292 (or dired-subdir-switches dired-actual-switches)))))
2293 (let ((opoint (point)))
2294 ;; We don't need a marker for opoint as the subdir is always
2295 ;; inserted *after* opoint.
2296 (setq dirname (file-name-as-directory dirname))
2297 (or (and (not switches)
2298 (when (dired-goto-subdir dirname)
2299 (unless (dired-subdir-hidden-p dirname)
2300 (dired-initial-position dirname))
2302 (dired-insert-subdir dirname switches no-error-if-not-dir-p))
2303 ;; Push mark so that it's easy to find back. Do this after the
2304 ;; insert message so that the user sees the `Mark set' message.
2305 (push-mark opoint)))
2307 ;;;###autoload
2308 (defun dired-insert-subdir (dirname &optional switches no-error-if-not-dir-p)
2309 "Insert this subdirectory into the same Dired buffer.
2310 If it is already present, overwrite the previous entry;
2311 otherwise, insert it at its natural place (as `ls -lR' would
2312 have done).
2313 With a prefix arg, you may edit the `ls' switches used for this listing.
2314 You can add `R' to the switches to expand the whole tree starting at
2315 this subdirectory.
2316 This function takes some pains to conform to `ls -lR' output."
2317 ;; NO-ERROR-IF-NOT-DIR-P needed for special filesystems like
2318 ;; Prospero where dired-ls does the right thing, but
2319 ;; file-directory-p has not been redefined.
2320 (interactive
2321 (list (dired-get-filename)
2322 (if current-prefix-arg
2323 (read-string "Switches for listing: "
2324 (or dired-subdir-switches dired-actual-switches)))))
2325 (setq dirname (file-name-as-directory (expand-file-name dirname)))
2326 (or no-error-if-not-dir-p
2327 (file-directory-p dirname)
2328 (error "Attempt to insert a non-directory: %s" dirname))
2329 (let ((elt (assoc dirname dired-subdir-alist))
2330 (cons (assoc-string dirname dired-switches-alist))
2331 (modflag (buffer-modified-p))
2332 (old-switches switches)
2333 switches-have-R mark-alist case-fold-search buffer-read-only)
2334 (and (not switches) cons (setq switches (cdr cons)))
2335 (dired-insert-subdir-validate dirname switches)
2336 ;; case-fold-search is nil now, so we can test for capital `R':
2337 (if (setq switches-have-R (and switches (string-match-p "R" switches)))
2338 ;; avoid duplicated subdirs
2339 (setq mark-alist (dired-kill-tree dirname t)))
2340 (if elt
2341 ;; If subdir is already present, remove it and remember its marks
2342 (setq mark-alist (nconc (dired-insert-subdir-del elt) mark-alist))
2343 (dired-insert-subdir-newpos dirname)) ; else compute new position
2344 (dired-insert-subdir-doupdate
2345 dirname elt (dired-insert-subdir-doinsert dirname switches))
2346 (when old-switches
2347 (if cons
2348 (setcdr cons switches)
2349 (push (cons dirname switches) dired-switches-alist)))
2350 (when switches-have-R
2351 (dired-build-subdir-alist switches)
2352 (setq switches (dired-replace-in-string "R" "" switches))
2353 (dolist (cur-ass dired-subdir-alist)
2354 (let ((cur-dir (car cur-ass)))
2355 (and (dired-in-this-tree cur-dir dirname)
2356 (let ((cur-cons (assoc-string cur-dir dired-switches-alist)))
2357 (if cur-cons
2358 (setcdr cur-cons switches)
2359 (push (cons cur-dir switches) dired-switches-alist)))))))
2360 (dired-initial-position dirname)
2361 (save-excursion (dired-mark-remembered mark-alist))
2362 (restore-buffer-modified-p modflag)))
2364 (defun dired-insert-subdir-validate (dirname &optional switches)
2365 ;; Check that it is valid to insert DIRNAME with SWITCHES.
2366 ;; Signal an error if invalid (e.g. user typed `i' on `..').
2367 (or (dired-in-this-tree dirname (expand-file-name default-directory))
2368 (error "%s: not in this directory tree" dirname))
2369 (let ((real-switches (or switches dired-subdir-switches)))
2370 (when real-switches
2371 (let (case-fold-search)
2372 (mapcar
2373 (lambda (x)
2374 (or (eq (null (string-match-p x real-switches))
2375 (null (string-match-p x dired-actual-switches)))
2376 (error
2377 "Can't have dirs with and without -%s switches together" x)))
2378 ;; all switches that make a difference to dired-get-filename:
2379 '("F" "b"))))))
2381 (defun dired-alist-add (dir new-marker)
2382 ;; Add new DIR at NEW-MARKER. Sort alist.
2383 (dired-alist-add-1 dir new-marker)
2384 (dired-alist-sort))
2386 (defun dired-alist-sort ()
2387 ;; Keep the alist sorted on buffer position.
2388 (setq dired-subdir-alist
2389 (sort dired-subdir-alist
2390 (lambda (elt1 elt2)
2391 (> (dired-get-subdir-min elt1)
2392 (dired-get-subdir-min elt2))))))
2394 (defun dired-kill-tree (dirname &optional remember-marks kill-root)
2395 "Kill all proper subdirs of DIRNAME, excluding DIRNAME itself.
2396 Interactively, you can kill DIRNAME as well by using a prefix argument.
2397 In interactive use, the command prompts for DIRNAME.
2399 When called from Lisp, if REMEMBER-MARKS is non-nil, return an alist
2400 of marked files. If KILL-ROOT is non-nil, kill DIRNAME as well."
2401 (interactive "DKill tree below directory: \ni\nP")
2402 (setq dirname (file-name-as-directory (expand-file-name dirname)))
2403 (let ((s-alist dired-subdir-alist) dir m-alist)
2404 (while s-alist
2405 (setq dir (car (car s-alist))
2406 s-alist (cdr s-alist))
2407 (and (or kill-root (not (string-equal dir dirname)))
2408 (dired-in-this-tree dir dirname)
2409 (dired-goto-subdir dir)
2410 (setq m-alist (nconc (dired-kill-subdir remember-marks) m-alist))))
2411 m-alist))
2413 (defun dired-insert-subdir-newpos (new-dir)
2414 ;; Find pos for new subdir, according to tree order.
2415 ;;(goto-char (point-max))
2416 (let ((alist dired-subdir-alist) elt dir new-pos)
2417 (while alist
2418 (setq elt (car alist)
2419 alist (cdr alist)
2420 dir (car elt))
2421 (if (dired-tree-lessp dir new-dir)
2422 ;; Insert NEW-DIR after DIR
2423 (setq new-pos (dired-get-subdir-max elt)
2424 alist nil)))
2425 (goto-char new-pos))
2426 ;; want a separating newline between subdirs
2427 (or (eobp)
2428 (forward-line -1))
2429 (insert "\n")
2430 (point))
2432 (defun dired-insert-subdir-del (element)
2433 ;; Erase an already present subdir (given by ELEMENT) from buffer.
2434 ;; Move to that buffer position. Return a mark-alist.
2435 (let ((begin-marker (dired-get-subdir-min element)))
2436 (goto-char begin-marker)
2437 ;; Are at beginning of subdir (and inside it!). Now determine its end:
2438 (goto-char (dired-subdir-max))
2439 (or (eobp);; want a separating newline _between_ subdirs:
2440 (forward-char -1))
2441 (prog1
2442 (dired-remember-marks begin-marker (point))
2443 (delete-region begin-marker (point)))))
2445 (defun dired-insert-subdir-doinsert (dirname switches)
2446 ;; Insert ls output after point.
2447 ;; Return the boundary of the inserted text (as list of BEG and END).
2448 (save-excursion
2449 (let ((begin (point)))
2450 (let ((dired-actual-switches
2451 (or switches
2452 dired-subdir-switches
2453 (dired-replace-in-string "R" "" dired-actual-switches))))
2454 (if (equal dirname (car (car (last dired-subdir-alist))))
2455 ;; If doing the top level directory of the buffer,
2456 ;; redo it as specified in dired-directory.
2457 (dired-readin-insert)
2458 (dired-insert-directory dirname dired-actual-switches nil nil t)))
2459 (list begin (point)))))
2461 (defun dired-insert-subdir-doupdate (dirname elt beg-end)
2462 ;; Point is at the correct subdir alist position for ELT,
2463 ;; BEG-END is the subdir-region (as list of begin and end).
2464 (if elt ; subdir was already present
2465 ;; update its position (should actually be unchanged)
2466 (set-marker (dired-get-subdir-min elt) (point-marker))
2467 (dired-alist-add dirname (point-marker)))
2468 ;; The hook may depend on the subdir-alist containing the just
2469 ;; inserted subdir, so run it after dired-alist-add:
2470 (if dired-after-readin-hook
2471 (save-excursion
2472 (let ((begin (nth 0 beg-end))
2473 (end (nth 1 beg-end)))
2474 (goto-char begin)
2475 (save-restriction
2476 (narrow-to-region begin end)
2477 ;; hook may add or delete lines, but the subdir boundary
2478 ;; marker floats
2479 (run-hooks 'dired-after-readin-hook))))))
2481 (defun dired-tree-lessp (dir1 dir2)
2482 ;; Lexicographic order on file name components, like `ls -lR':
2483 ;; DIR1 < DIR2 if DIR1 comes *before* DIR2 in an `ls -lR' listing,
2484 ;; i.e., if DIR1 is a (grand)parent dir of DIR2,
2485 ;; or DIR1 and DIR2 are in the same parentdir and their last
2486 ;; components are string-lessp.
2487 ;; Thus ("/usr/" "/usr/bin") and ("/usr/a/" "/usr/b/") are tree-lessp.
2488 ;; string-lessp could arguably be replaced by file-newer-than-file-p
2489 ;; if dired-actual-switches contained t.
2490 (setq dir1 (file-name-as-directory dir1)
2491 dir2 (file-name-as-directory dir2))
2492 (let ((components-1 (dired-split "/" dir1))
2493 (components-2 (dired-split "/" dir2)))
2494 (while (and components-1
2495 components-2
2496 (equal (car components-1) (car components-2)))
2497 (setq components-1 (cdr components-1)
2498 components-2 (cdr components-2)))
2499 (let ((c1 (car components-1))
2500 (c2 (car components-2)))
2502 (cond ((and c1 c2)
2503 (string-lessp c1 c2))
2504 ((and (null c1) (null c2))
2505 nil) ; they are equal, not lessp
2506 ((null c1) ; c2 is a subdir of c1: c1<c2
2508 ((null c2) ; c1 is a subdir of c2: c1>c2
2509 nil)
2510 (t (error "This can't happen"))))))
2512 ;; There should be a builtin split function - inverse to mapconcat.
2513 (defun dired-split (pat str &optional limit)
2514 "Splitting on regexp PAT, turn string STR into a list of substrings.
2515 Optional third arg LIMIT (>= 1) is a limit to the length of the
2516 resulting list.
2517 Thus, if SEP is a regexp that only matches itself,
2519 (mapconcat 'identity (dired-split SEP STRING) SEP)
2521 is always equal to STRING."
2522 (let* ((start (string-match pat str))
2523 (result (list (substring str 0 start)))
2524 (count 1)
2525 (end (if start (match-end 0))))
2526 (if end ; else nothing left
2527 (while (and (or (not (integerp limit))
2528 (< count limit))
2529 (string-match pat str end))
2530 (setq start (match-beginning 0)
2531 count (1+ count)
2532 result (cons (substring str end start) result)
2533 end (match-end 0)
2534 start end)
2536 (if (and (or (not (integerp limit))
2537 (< count limit))
2538 end) ; else nothing left
2539 (setq result
2540 (cons (substring str end) result)))
2541 (nreverse result)))
2543 ;;; moving by subdirectories
2545 ;;;###autoload
2546 (defun dired-prev-subdir (arg &optional no-error-if-not-found no-skip)
2547 "Go to previous subdirectory, regardless of level.
2548 When called interactively and not on a subdir line, go to this subdir's line."
2549 ;;(interactive "p")
2550 (interactive
2551 (list (if current-prefix-arg
2552 (prefix-numeric-value current-prefix-arg)
2553 ;; if on subdir start already, don't stay there!
2554 (if (dired-get-subdir) 1 0))))
2555 (dired-next-subdir (- arg) no-error-if-not-found no-skip))
2557 (defun dired-subdir-min ()
2558 (save-excursion
2559 (if (not (dired-prev-subdir 0 t t))
2560 (error "Not in a subdir!")
2561 (point))))
2563 ;;;###autoload
2564 (defun dired-goto-subdir (dir)
2565 "Go to end of header line of DIR in this dired buffer.
2566 Return value of point on success, otherwise return nil.
2567 The next char is either \\n, or \\r if DIR is hidden."
2568 (interactive
2569 (prog1 ; let push-mark display its message
2570 (list (expand-file-name
2571 (completing-read "Goto in situ directory: " ; prompt
2572 dired-subdir-alist ; table
2573 nil ; predicate
2574 t ; require-match
2575 (dired-current-directory))))
2576 (push-mark)))
2577 (setq dir (file-name-as-directory dir))
2578 (let ((elt (assoc dir dired-subdir-alist)))
2579 (and elt
2580 (goto-char (dired-get-subdir-min elt))
2581 ;; dired-subdir-hidden-p and dired-add-entry depend on point being
2582 ;; at either \r or \n after this function succeeds.
2583 (progn (skip-chars-forward "^\r\n")
2584 (point)))))
2586 ;;;###autoload
2587 (defun dired-mark-subdir-files ()
2588 "Mark all files except `.' and `..' in current subdirectory.
2589 If the Dired buffer shows multiple directories, this command
2590 marks the files listed in the subdirectory that point is in."
2591 (interactive)
2592 (let ((p-min (dired-subdir-min)))
2593 (dired-mark-files-in-region p-min (dired-subdir-max))))
2595 ;;;###autoload
2596 (defun dired-kill-subdir (&optional remember-marks)
2597 "Remove all lines of current subdirectory.
2598 Lower levels are unaffected."
2599 ;; With optional REMEMBER-MARKS, return a mark-alist.
2600 (interactive)
2601 (let* ((beg (dired-subdir-min))
2602 (end (dired-subdir-max))
2603 (modflag (buffer-modified-p))
2604 (cur-dir (dired-current-directory))
2605 (cons (assoc-string cur-dir dired-switches-alist))
2606 buffer-read-only)
2607 (when (equal cur-dir (expand-file-name default-directory))
2608 (error "Attempt to kill top level directory"))
2609 (prog1
2610 (if remember-marks (dired-remember-marks beg end))
2611 (delete-region beg end)
2612 (if (eobp) ; don't leave final blank line
2613 (delete-char -1))
2614 (dired-unsubdir cur-dir)
2615 (when cons
2616 (setq dired-switches-alist (delete cons dired-switches-alist)))
2617 (restore-buffer-modified-p modflag))))
2619 (defun dired-unsubdir (dir)
2620 ;; Remove DIR from the alist
2621 (setq dired-subdir-alist
2622 (delq (assoc dir dired-subdir-alist) dired-subdir-alist)))
2624 ;;;###autoload
2625 (defun dired-tree-up (arg)
2626 "Go up ARG levels in the dired tree."
2627 (interactive "p")
2628 (let ((dir (dired-current-directory)))
2629 (while (>= arg 1)
2630 (setq arg (1- arg)
2631 dir (file-name-directory (directory-file-name dir))))
2632 ;;(setq dir (expand-file-name dir))
2633 (or (dired-goto-subdir dir)
2634 (error "Cannot go up to %s - not in this tree" dir))))
2636 ;;;###autoload
2637 (defun dired-tree-down ()
2638 "Go down in the dired tree."
2639 (interactive)
2640 (let ((dir (dired-current-directory)) ; has slash
2641 pos case-fold-search) ; filenames are case sensitive
2642 (let ((rest (reverse dired-subdir-alist)) elt)
2643 (while rest
2644 (setq elt (car rest)
2645 rest (cdr rest))
2646 (if (dired-in-this-tree (directory-file-name (car elt)) dir)
2647 (setq rest nil
2648 pos (dired-goto-subdir (car elt))))))
2649 (if pos
2650 (goto-char pos)
2651 (error "At the bottom"))))
2653 ;;; hiding
2655 (defun dired-unhide-subdir ()
2656 (let (buffer-read-only)
2657 (subst-char-in-region (dired-subdir-min) (dired-subdir-max) ?\r ?\n)))
2659 (defun dired-hide-check ()
2660 (or selective-display
2661 (error "selective-display must be t for subdir hiding to work!")))
2663 (defun dired-subdir-hidden-p (dir)
2664 (and selective-display
2665 (save-excursion
2666 (dired-goto-subdir dir)
2667 (= (following-char) ?\r))))
2669 ;;;###autoload
2670 (defun dired-hide-subdir (arg)
2671 "Hide or unhide the current subdirectory and move to next directory.
2672 Optional prefix arg is a repeat factor.
2673 Use \\[dired-hide-all] to (un)hide all directories."
2674 (interactive "p")
2675 (dired-hide-check)
2676 (let ((modflag (buffer-modified-p)))
2677 (while (>= (setq arg (1- arg)) 0)
2678 (let* ((cur-dir (dired-current-directory))
2679 (hidden-p (dired-subdir-hidden-p cur-dir))
2680 (elt (assoc cur-dir dired-subdir-alist))
2681 (end-pos (1- (dired-get-subdir-max elt)))
2682 buffer-read-only)
2683 ;; keep header line visible, hide rest
2684 (goto-char (dired-get-subdir-min elt))
2685 (skip-chars-forward "^\n\r")
2686 (if hidden-p
2687 (subst-char-in-region (point) end-pos ?\r ?\n)
2688 (subst-char-in-region (point) end-pos ?\n ?\r)))
2689 (dired-next-subdir 1 t))
2690 (restore-buffer-modified-p modflag)))
2692 ;;;###autoload
2693 (defun dired-hide-all (&optional ignored)
2694 "Hide all subdirectories, leaving only their header lines.
2695 If there is already something hidden, make everything visible again.
2696 Use \\[dired-hide-subdir] to (un)hide a particular subdirectory."
2697 (interactive "P")
2698 (dired-hide-check)
2699 (let ((modflag (buffer-modified-p))
2700 buffer-read-only)
2701 (if (save-excursion
2702 (goto-char (point-min))
2703 (search-forward "\r" nil t))
2704 ;; unhide - bombs on \r in filenames
2705 (subst-char-in-region (point-min) (point-max) ?\r ?\n)
2706 ;; hide
2707 (let ((pos (point-max)) ; pos of end of last directory
2708 (alist dired-subdir-alist))
2709 (while alist ; while there are dirs before pos
2710 (subst-char-in-region (dired-get-subdir-min (car alist)) ; pos of prev dir
2711 (save-excursion
2712 (goto-char pos) ; current dir
2713 ;; we're somewhere on current dir's line
2714 (forward-line -1)
2715 (point))
2716 ?\n ?\r)
2717 (setq pos (dired-get-subdir-min (car alist))) ; prev dir gets current dir
2718 (setq alist (cdr alist)))))
2719 (restore-buffer-modified-p modflag)))
2721 ;;;###end dired-ins.el
2724 ;; Search only in file names in the Dired buffer.
2726 (defcustom dired-isearch-filenames nil
2727 "Non-nil to Isearch in file names only.
2728 If t, Isearch in Dired always matches only file names.
2729 If `dwim', Isearch matches file names when initial point position is on
2730 a file name. Otherwise, it searches the whole buffer without restrictions."
2731 :type '(choice (const :tag "No restrictions" nil)
2732 (const :tag "When point is on a file name initially, search file names" dwim)
2733 (const :tag "Always search in file names" t))
2734 :group 'dired
2735 :version "23.1")
2737 (define-minor-mode dired-isearch-filenames-mode
2738 "Toggle file names searching on or off.
2739 When on, Isearch skips matches outside file names using the predicate
2740 `dired-isearch-filter-filenames' that matches only at file names.
2741 When off, it uses the original predicate."
2742 nil nil nil
2743 (if dired-isearch-filenames-mode
2744 (add-function :before-while (local 'isearch-filter-predicate)
2745 #'dired-isearch-filter-filenames
2746 '((isearch-message-prefix . "filename ")))
2747 (remove-function (local 'isearch-filter-predicate)
2748 #'dired-isearch-filter-filenames))
2749 (when isearch-mode
2750 (setq isearch-success t isearch-adjusted t)
2751 (isearch-update)))
2753 ;;;###autoload
2754 (defun dired-isearch-filenames-setup ()
2755 "Set up isearch to search in Dired file names.
2756 Intended to be added to `isearch-mode-hook'."
2757 (when (or (eq dired-isearch-filenames t)
2758 (and (eq dired-isearch-filenames 'dwim)
2759 (get-text-property (point) 'dired-filename)))
2760 (define-key isearch-mode-map "\M-sff" 'dired-isearch-filenames-mode)
2761 (dired-isearch-filenames-mode 1)
2762 (add-hook 'isearch-mode-end-hook 'dired-isearch-filenames-end nil t)))
2764 (defun dired-isearch-filenames-end ()
2765 "Clean up the Dired file name search after terminating isearch."
2766 (define-key isearch-mode-map "\M-sff" nil)
2767 (dired-isearch-filenames-mode -1)
2768 (remove-hook 'isearch-mode-end-hook 'dired-isearch-filenames-end t))
2770 (defun dired-isearch-filter-filenames (beg end)
2771 "Test whether some part of the current search match is inside a file name.
2772 This function returns non-nil if some part of the text between BEG and END
2773 is part of a file name (i.e., has the text property `dired-filename')."
2774 (text-property-not-all (min beg end) (max beg end)
2775 'dired-filename nil))
2777 ;;;###autoload
2778 (defun dired-isearch-filenames ()
2779 "Search for a string using Isearch only in file names in the Dired buffer."
2780 (interactive)
2781 (let ((dired-isearch-filenames t))
2782 (isearch-forward nil t)))
2784 ;;;###autoload
2785 (defun dired-isearch-filenames-regexp ()
2786 "Search for a regexp using Isearch only in file names in the Dired buffer."
2787 (interactive)
2788 (let ((dired-isearch-filenames t))
2789 (isearch-forward-regexp nil t)))
2792 ;; Functions for searching in tags style among marked files.
2794 ;;;###autoload
2795 (defun dired-do-isearch ()
2796 "Search for a string through all marked files using Isearch."
2797 (interactive)
2798 (multi-isearch-files
2799 (dired-get-marked-files nil nil 'dired-nondirectory-p)))
2801 ;;;###autoload
2802 (defun dired-do-isearch-regexp ()
2803 "Search for a regexp through all marked files using Isearch."
2804 (interactive)
2805 (multi-isearch-files-regexp
2806 (dired-get-marked-files nil nil 'dired-nondirectory-p)))
2808 ;;;###autoload
2809 (defun dired-do-search (regexp)
2810 "Search through all marked files for a match for REGEXP.
2811 Stops when a match is found.
2812 To continue searching for next match, use command \\[tags-loop-continue]."
2813 (interactive "sSearch marked files (regexp): ")
2814 (tags-search regexp '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2816 ;;;###autoload
2817 (defun dired-do-query-replace-regexp (from to &optional delimited)
2818 "Do `query-replace-regexp' of FROM with TO, on all marked files.
2819 Third arg DELIMITED (prefix arg) means replace only word-delimited matches.
2820 If you exit (\\[keyboard-quit], RET or q), you can resume the query replace
2821 with the command \\[tags-loop-continue]."
2822 (interactive
2823 (let ((common
2824 (query-replace-read-args
2825 "Query replace regexp in marked files" t t)))
2826 (list (nth 0 common) (nth 1 common) (nth 2 common))))
2827 (dolist (file (dired-get-marked-files nil nil 'dired-nondirectory-p))
2828 (let ((buffer (get-file-buffer file)))
2829 (if (and buffer (with-current-buffer buffer
2830 buffer-read-only))
2831 (error "File `%s' is visited read-only" file))))
2832 (tags-query-replace from to delimited
2833 '(dired-get-marked-files nil nil 'dired-nondirectory-p)))
2835 (declare-function xref--show-xrefs "xref")
2836 (declare-function xref-query-replace-in-results "xref")
2838 ;;;###autoload
2839 (defun dired-do-find-regexp (regexp)
2840 "Find all matches for REGEXP in all marked files.
2841 For any marked directory, all of its files are searched recursively.
2842 However, files matching `grep-find-ignored-files' and subdirectories
2843 matching `grep-find-ignored-directories' are skipped in the marked
2844 directories.
2846 REGEXP should use constructs supported by your local `grep' command."
2847 (interactive "sSearch marked files (regexp): ")
2848 (require 'grep)
2849 (defvar grep-find-ignored-files)
2850 (defvar grep-find-ignored-directories)
2851 (let* ((files (dired-get-marked-files))
2852 (ignores (nconc (mapcar
2853 (lambda (s) (concat s "/"))
2854 grep-find-ignored-directories)
2855 grep-find-ignored-files))
2856 (xrefs (mapcan
2857 (lambda (file)
2858 (xref-collect-matches regexp "*" file
2859 (and (file-directory-p file)
2860 ignores)))
2861 files)))
2862 (unless xrefs
2863 (user-error "No matches for: %s" regexp))
2864 (xref--show-xrefs xrefs nil t)))
2866 ;;;###autoload
2867 (defun dired-do-find-regexp-and-replace (from to)
2868 "Replace matches of FROM with TO, in all marked files.
2869 For any marked directory, matches in all of its files are replaced,
2870 recursively. However, files matching `grep-find-ignored-files'
2871 and subdirectories matching `grep-find-ignored-directories' are skipped
2872 in the marked directories.
2874 REGEXP should use constructs supported by your local `grep' command."
2875 (interactive
2876 (let ((common
2877 (query-replace-read-args
2878 "Query replace regexp in marked files" t t)))
2879 (list (nth 0 common) (nth 1 common))))
2880 (with-current-buffer (dired-do-find-regexp from)
2881 (xref-query-replace-in-results from to)))
2883 (defun dired-nondirectory-p (file)
2884 (not (file-directory-p file)))
2886 ;;;###autoload
2887 (defun dired-show-file-type (file &optional deref-symlinks)
2888 "Print the type of FILE, according to the `file' command.
2889 If you give a prefix to this command, and FILE is a symbolic
2890 link, then the type of the file linked to by FILE is printed
2891 instead."
2892 (interactive (list (dired-get-filename t) current-prefix-arg))
2893 (let (process-file-side-effects)
2894 (with-temp-buffer
2895 (if deref-symlinks
2896 (process-file "file" nil t t "-L" "--" file)
2897 (process-file "file" nil t t "--" file))
2898 (when (bolp)
2899 (backward-delete-char 1))
2900 (message "%s" (buffer-string)))))
2902 (provide 'dired-aux)
2904 ;; Local Variables:
2905 ;; byte-compile-dynamic: t
2906 ;; generated-autoload-file: "dired-loaddefs.el"
2907 ;; End:
2909 ;;; dired-aux.el ends here