Do not create locallisppath directories.
[emacs.git] / lisp / vc / ediff.el
blob7a8f399a6ceb1f1e5411b588c106fe3a0dcaa994
1 ;;; ediff.el --- a comprehensive visual interface to diff & patch
3 ;; Copyright (C) 1994-2013 Free Software Foundation, Inc.
5 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
6 ;; Created: February 2, 1994
7 ;; Keywords: comparing, merging, patching, vc, tools, unix
8 ;; Version: 2.81.4
10 ;; Yoni Rabkin <yoni@rabkins.net> contacted the maintainer of this
11 ;; file on 20/3/2008, and the maintainer agreed that when a bug is
12 ;; filed in the Emacs bug reporting system against this file, a copy
13 ;; of the bug report be sent to the maintainer's email address.
15 (defconst ediff-version "2.81.4" "The current version of Ediff")
16 (defconst ediff-date "December 7, 2009" "Date of last update")
19 ;; This file is part of GNU Emacs.
21 ;; GNU Emacs is free software: you can redistribute it and/or modify
22 ;; it under the terms of the GNU General Public License as published by
23 ;; the Free Software Foundation, either version 3 of the License, or
24 ;; (at your option) any later version.
26 ;; GNU Emacs is distributed in the hope that it will be useful,
27 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
28 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 ;; GNU General Public License for more details.
31 ;; You should have received a copy of the GNU General Public License
32 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
34 ;;; Commentary:
36 ;; Never read that diff output again!
37 ;; Apply patch interactively!
38 ;; Merge with ease!
40 ;; This package provides a convenient way of simultaneous browsing through
41 ;; the differences between a pair (or a triple) of files or buffers. The
42 ;; files being compared, file-A, file-B, and file-C (if applicable) are
43 ;; shown in separate windows (side by side, one above the another, or in
44 ;; separate frames), and the differences are highlighted as you step
45 ;; through them. You can also copy difference regions from one buffer to
46 ;; another (and recover old differences if you change your mind).
48 ;; Ediff also supports merging operations on files and buffers, including
49 ;; merging using ancestor versions. Both comparison and merging operations can
50 ;; be performed on directories, i.e., by pairwise comparison of files in those
51 ;; directories.
53 ;; In addition, Ediff can apply a patch to a file and then let you step
54 ;; though both files, the patched and the original one, simultaneously,
55 ;; difference-by-difference. You can even apply a patch right out of a
56 ;; mail buffer, i.e., patches received by mail don't even have to be saved.
57 ;; Since Ediff lets you copy differences between buffers, you can, in
58 ;; effect, apply patches selectively (i.e., you can copy a difference
59 ;; region from file_orig to file, thereby undoing any particular patch that
60 ;; you don't like).
62 ;; Ediff is aware of version control, which lets the user compare
63 ;; files with their older versions. Ediff can also work with remote and
64 ;; compressed files. Details are given below.
66 ;; Finally, Ediff supports directory-level comparison, merging and patching.
67 ;; See the on-line manual for details.
69 ;; This package builds upon the ideas borrowed from emerge.el and several
70 ;; Ediff's functions are adaptations from emerge.el. Much of the functionality
71 ;; Ediff provides is also influenced by emerge.el.
73 ;; The present version of Ediff supersedes Emerge. It provides a superior user
74 ;; interface and has numerous major features not found in Emerge. In
75 ;; particular, it can do patching, and 2-way and 3-way file comparison,
76 ;; merging, and directory operations.
80 ;;; Bugs:
82 ;; 1. The undo command doesn't restore deleted regions well. That is, if
83 ;; you delete all characters in a difference region and then invoke
84 ;; `undo', the reinstated text will most likely be inserted outside of
85 ;; what Ediff thinks is the current difference region. (This problem
86 ;; doesn't seem to exist with XEmacs.)
88 ;; If at any point you feel that difference regions are no longer correct,
89 ;; you can hit '!' to recompute the differences.
91 ;; 2. On a monochrome display, the repertoire of faces with which to
92 ;; highlight fine differences is limited. By default, Ediff is using
93 ;; underlining. However, if the region is already underlined by some other
94 ;; overlays, there is no simple way to temporarily remove that residual
95 ;; underlining. This problem occurs when a buffer is highlighted with
96 ;; hilit19.el or font-lock.el packages. If this residual highlighting gets
97 ;; in the way, you can do the following. Both font-lock.el and hilit19.el
98 ;; provide commands for unhighlighting buffers. You can either place these
99 ;; commands in `ediff-prepare-buffer-hook' (which will unhighlight every
100 ;; buffer used by Ediff) or you can execute them interactively, at any time
101 ;; and on any buffer.
104 ;;; Acknowledgments:
106 ;; Ediff was inspired by Dale R. Worley's <drw@math.mit.edu> emerge.el.
107 ;; Ediff would not have been possible without the help and encouragement of
108 ;; its many users. See Ediff on-line Info for the full list of those who
109 ;; helped. Improved defaults in Ediff file-name reading commands.
111 ;;; Code:
113 (provide 'ediff)
115 ;; Compiler pacifier
116 (eval-and-compile
117 (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
119 (require 'ediff-util)
120 ;; end pacifier
122 (require 'ediff-init)
123 (require 'ediff-mult) ; required because of the registry stuff
125 (defgroup ediff nil
126 "Comprehensive visual interface to `diff' and `patch'."
127 :tag "Ediff"
128 :group 'tools)
131 (defcustom ediff-use-last-dir nil
132 "If t, Ediff will use previous directory as default when reading file name."
133 :type 'boolean
134 :group 'ediff)
136 ;; Last directory used by an Ediff command for file-A.
137 (defvar ediff-last-dir-A nil)
138 ;; Last directory used by an Ediff command for file-B.
139 (defvar ediff-last-dir-B nil)
140 ;; Last directory used by an Ediff command for file-C.
141 (defvar ediff-last-dir-C nil)
142 ;; Last directory used by an Ediff command for the ancestor file.
143 (defvar ediff-last-dir-ancestor nil)
144 ;; Last directory used by an Ediff command as the output directory for merge.
145 (defvar ediff-last-merge-autostore-dir nil)
148 ;; Used as a startup hook to set `_orig' patch file read-only.
149 (defun ediff-set-read-only-in-buf-A ()
150 (ediff-with-current-buffer ediff-buffer-A
151 (setq buffer-read-only t)))
153 (declare-function dired-get-filename "dired"
154 (&optional localp no-error-if-not-filep))
155 (declare-function dired-get-marked-files "dired"
156 (&optional localp arg filter distinguish-one-marked))
158 ;; Return a plausible default for ediff's first file:
159 ;; In dired, return the file number FILENO (or 0) in the list
160 ;; (all-selected-files, filename under the cursor), where directories are
161 ;; ignored. Otherwise, return DEFAULT file name, if non-nil. Else,
162 ;; if the buffer is visiting a file, return that file name.
163 (defun ediff-get-default-file-name (&optional default fileno)
164 (cond ((eq major-mode 'dired-mode)
165 (let ((current (dired-get-filename nil 'no-error))
166 (marked (condition-case nil
167 (dired-get-marked-files 'no-dir)
168 (error nil)))
169 aux-list choices result)
170 (or (integerp fileno) (setq fileno 0))
171 (if (stringp default)
172 (setq aux-list (cons default aux-list)))
173 (if (and (stringp current) (not (file-directory-p current)))
174 (setq aux-list (cons current aux-list)))
175 (setq choices (nconc marked aux-list))
176 (setq result (elt choices fileno))
177 (or result
178 default)))
179 ((stringp default) default)
180 ((buffer-file-name (current-buffer))
181 (file-name-nondirectory (buffer-file-name (current-buffer))))
184 ;;; Compare files/buffers
186 ;;;###autoload
187 (defun ediff-files (file-A file-B &optional startup-hooks)
188 "Run Ediff on a pair of files, FILE-A and FILE-B."
189 (interactive
190 (let ((dir-A (if ediff-use-last-dir
191 ediff-last-dir-A
192 default-directory))
193 dir-B f)
194 (list (setq f (ediff-read-file-name
195 "File A to compare"
196 dir-A
197 (ediff-get-default-file-name)
198 'no-dirs))
199 (ediff-read-file-name "File B to compare"
200 (setq dir-B
201 (if ediff-use-last-dir
202 ediff-last-dir-B
203 (file-name-directory f)))
204 (progn
205 (ediff-add-to-history
206 'file-name-history
207 (ediff-abbreviate-file-name
208 (expand-file-name
209 (file-name-nondirectory f)
210 dir-B)))
211 (ediff-get-default-file-name f 1)))
213 (ediff-files-internal file-A
214 (if (file-directory-p file-B)
215 (expand-file-name
216 (file-name-nondirectory file-A) file-B)
217 file-B)
218 nil ; file-C
219 startup-hooks
220 'ediff-files))
222 ;;;###autoload
223 (defun ediff-files3 (file-A file-B file-C &optional startup-hooks)
224 "Run Ediff on three files, FILE-A, FILE-B, and FILE-C."
225 (interactive
226 (let ((dir-A (if ediff-use-last-dir
227 ediff-last-dir-A
228 default-directory))
229 dir-B dir-C f ff)
230 (list (setq f (ediff-read-file-name
231 "File A to compare"
232 dir-A
233 (ediff-get-default-file-name)
234 'no-dirs))
235 (setq ff (ediff-read-file-name "File B to compare"
236 (setq dir-B
237 (if ediff-use-last-dir
238 ediff-last-dir-B
239 (file-name-directory f)))
240 (progn
241 (ediff-add-to-history
242 'file-name-history
243 (ediff-abbreviate-file-name
244 (expand-file-name
245 (file-name-nondirectory f)
246 dir-B)))
247 (ediff-get-default-file-name f 1))))
248 (ediff-read-file-name "File C to compare"
249 (setq dir-C (if ediff-use-last-dir
250 ediff-last-dir-C
251 (file-name-directory ff)))
252 (progn
253 (ediff-add-to-history
254 'file-name-history
255 (ediff-abbreviate-file-name
256 (expand-file-name
257 (file-name-nondirectory ff)
258 dir-C)))
259 (ediff-get-default-file-name ff 2)))
261 (ediff-files-internal file-A
262 (if (file-directory-p file-B)
263 (expand-file-name
264 (file-name-nondirectory file-A) file-B)
265 file-B)
266 (if (file-directory-p file-C)
267 (expand-file-name
268 (file-name-nondirectory file-A) file-C)
269 file-C)
270 startup-hooks
271 'ediff-files3))
273 ;;;###autoload
274 (defalias 'ediff3 'ediff-files3)
277 (defun ediff-find-file (file-var buffer-name &optional last-dir hooks-var)
278 "Visit FILE and arrange its buffer to Ediff's liking.
279 FILE-VAR is actually a variable symbol whose value must contain a true
280 file name.
281 BUFFER-NAME is a variable symbol, which will get the buffer object into
282 which FILE is read.
283 LAST-DIR is the directory variable symbol where FILE's
284 directory name should be returned. HOOKS-VAR is a variable symbol that will
285 be assigned the hook to be executed after `ediff-startup' is finished.
286 `ediff-find-file' arranges that the temp files it might create will be
287 deleted."
288 (let* ((file (symbol-value file-var))
289 (file-magic (ediff-filename-magic-p file))
290 (temp-file-name-prefix (file-name-nondirectory file)))
291 (cond ((not (file-readable-p file))
292 (error "File `%s' does not exist or is not readable" file))
293 ((file-directory-p file)
294 (error "File `%s' is a directory" file)))
296 ;; some of the commands, below, require full file name
297 (setq file (expand-file-name file))
299 ;; Record the directory of the file
300 (if last-dir
301 (set last-dir (expand-file-name (file-name-directory file))))
303 ;; Setup the buffer
304 (set buffer-name (find-file-noselect file))
306 (ediff-with-current-buffer (symbol-value buffer-name)
307 (widen) ; Make sure the entire file is seen
308 (cond (file-magic ; file has a handler, such as jka-compr-handler or
309 ;;; ange-ftp-hook-function--arrange for temp file
310 (ediff-verify-file-buffer 'magic)
311 (setq file
312 (ediff-make-temp-file
313 (current-buffer) temp-file-name-prefix))
314 (set hooks-var (cons `(lambda () (delete-file ,file))
315 (symbol-value hooks-var))))
316 ;; file processed via auto-mode-alist, a la uncompress.el
317 ((not (equal (file-truename file)
318 (file-truename (buffer-file-name))))
319 (setq file
320 (ediff-make-temp-file
321 (current-buffer) temp-file-name-prefix))
322 (set hooks-var (cons `(lambda () (delete-file ,file))
323 (symbol-value hooks-var))))
324 (t ;; plain file---just check that the file matches the buffer
325 (ediff-verify-file-buffer))))
326 (set file-var file)))
328 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
329 (defun ediff-files-internal (file-A file-B file-C startup-hooks job-name
330 &optional merge-buffer-file)
331 (let (buf-A buf-B buf-C)
332 (if (string= file-A file-B)
333 (error "Files A and B are the same"))
334 (if (stringp file-C)
335 (or (and (string= file-A file-C) (error "Files A and C are the same"))
336 (and (string= file-B file-C) (error "Files B and C are the same"))))
337 (message "Reading file %s ... " file-A)
338 ;;(sit-for 0)
339 (ediff-find-file 'file-A 'buf-A 'ediff-last-dir-A 'startup-hooks)
340 (message "Reading file %s ... " file-B)
341 ;;(sit-for 0)
342 (ediff-find-file 'file-B 'buf-B 'ediff-last-dir-B 'startup-hooks)
343 (if (stringp file-C)
344 (progn
345 (message "Reading file %s ... " file-C)
346 ;;(sit-for 0)
347 (ediff-find-file
348 'file-C 'buf-C
349 (if (eq job-name 'ediff-merge-files-with-ancestor)
350 'ediff-last-dir-ancestor 'ediff-last-dir-C)
351 'startup-hooks)))
352 (ediff-setup buf-A file-A
353 buf-B file-B
354 buf-C file-C
355 startup-hooks
356 (list (cons 'ediff-job-name job-name))
357 merge-buffer-file)))
359 (declare-function diff-latest-backup-file "diff" (fn))
361 ;;;###autoload
362 (defalias 'ediff 'ediff-files)
364 ;;;###autoload
365 (defun ediff-current-file ()
366 "Start ediff between current buffer and its file on disk.
367 This command can be used instead of `revert-buffer'. If there is
368 nothing to revert then this command fails."
369 (interactive)
370 (unless (or revert-buffer-function
371 revert-buffer-insert-file-contents-function
372 (and buffer-file-number
373 (or (buffer-modified-p)
374 (not (verify-visited-file-modtime
375 (current-buffer))))))
376 (error "Nothing to revert"))
377 (let* ((auto-save-p (and (recent-auto-save-p)
378 buffer-auto-save-file-name
379 (file-readable-p buffer-auto-save-file-name)
380 (y-or-n-p
381 "Buffer has been auto-saved recently. Compare with auto-save file? ")))
382 (file-name (if auto-save-p
383 buffer-auto-save-file-name
384 buffer-file-name))
385 (revert-buf-name (concat "FILE=" file-name))
386 (revert-buf (get-buffer revert-buf-name))
387 (current-major major-mode))
388 (unless file-name
389 (error "Buffer does not seem to be associated with any file"))
390 (when revert-buf
391 (kill-buffer revert-buf)
392 (setq revert-buf nil))
393 (setq revert-buf (get-buffer-create revert-buf-name))
394 (with-current-buffer revert-buf
395 (insert-file-contents file-name)
396 ;; Assume same modes:
397 (funcall current-major))
398 (ediff-buffers revert-buf (current-buffer))))
401 ;;;###autoload
402 (defun ediff-backup (file)
403 "Run Ediff on FILE and its backup file.
404 Uses the latest backup, if there are several numerical backups.
405 If this file is a backup, `ediff' it with its original."
406 (interactive (list (read-file-name "Ediff (file with backup): ")))
407 ;; The code is taken from `diff-backup'.
408 (require 'diff)
409 (let (bak ori)
410 (if (backup-file-name-p file)
411 (setq bak file
412 ori (file-name-sans-versions file))
413 (setq bak (or (diff-latest-backup-file file)
414 (error "No backup found for %s" file))
415 ori file))
416 (ediff-files bak ori)))
418 ;;;###autoload
419 (defun ediff-buffers (buffer-A buffer-B &optional startup-hooks job-name)
420 "Run Ediff on a pair of buffers, BUFFER-A and BUFFER-B."
421 (interactive
422 (let (bf)
423 (list (setq bf (read-buffer "Buffer A to compare: "
424 (ediff-other-buffer "") t))
425 (read-buffer "Buffer B to compare: "
426 (progn
427 ;; realign buffers so that two visible bufs will be
428 ;; at the top
429 (save-window-excursion (other-window 1))
430 (ediff-other-buffer bf))
431 t))))
432 (or job-name (setq job-name 'ediff-buffers))
433 (ediff-buffers-internal buffer-A buffer-B nil startup-hooks job-name))
435 ;;;###autoload
436 (defalias 'ebuffers 'ediff-buffers)
439 ;;;###autoload
440 (defun ediff-buffers3 (buffer-A buffer-B buffer-C
441 &optional startup-hooks job-name)
442 "Run Ediff on three buffers, BUFFER-A, BUFFER-B, and BUFFER-C."
443 (interactive
444 (let (bf bff)
445 (list (setq bf (read-buffer "Buffer A to compare: "
446 (ediff-other-buffer "") t))
447 (setq bff (read-buffer "Buffer B to compare: "
448 (progn
449 ;; realign buffers so that two visible
450 ;; bufs will be at the top
451 (save-window-excursion (other-window 1))
452 (ediff-other-buffer bf))
454 (read-buffer "Buffer C to compare: "
455 (progn
456 ;; realign buffers so that three visible
457 ;; bufs will be at the top
458 (save-window-excursion (other-window 1))
459 (ediff-other-buffer (list bf bff)))
462 (or job-name (setq job-name 'ediff-buffers3))
463 (ediff-buffers-internal buffer-A buffer-B buffer-C startup-hooks job-name))
465 ;;;###autoload
466 (defalias 'ebuffers3 'ediff-buffers3)
470 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
471 (defun ediff-buffers-internal (buf-A buf-B buf-C startup-hooks job-name
472 &optional merge-buffer-file)
473 (let* ((buf-A-file-name (buffer-file-name (get-buffer buf-A)))
474 (buf-B-file-name (buffer-file-name (get-buffer buf-B)))
475 (buf-C-is-alive (ediff-buffer-live-p buf-C))
476 (buf-C-file-name (if buf-C-is-alive
477 (buffer-file-name (get-buffer buf-B))))
478 file-A file-B file-C)
479 (unwind-protect
480 (progn
481 (if (not (ediff-buffer-live-p buf-A))
482 (error "Buffer %S doesn't exist" buf-A))
483 (if (not (ediff-buffer-live-p buf-B))
484 (error "Buffer %S doesn't exist" buf-B))
485 (let ((ediff-job-name job-name))
486 (if (and ediff-3way-comparison-job
487 (not buf-C-is-alive))
488 (error "Buffer %S doesn't exist" buf-C)))
489 (if (stringp buf-A-file-name)
490 (setq buf-A-file-name (file-name-nondirectory buf-A-file-name)))
491 (if (stringp buf-B-file-name)
492 (setq buf-B-file-name (file-name-nondirectory buf-B-file-name)))
493 (if (stringp buf-C-file-name)
494 (setq buf-C-file-name (file-name-nondirectory buf-C-file-name)))
496 (setq file-A (ediff-make-temp-file buf-A buf-A-file-name)
497 file-B (ediff-make-temp-file buf-B buf-B-file-name))
498 (if buf-C-is-alive
499 (setq file-C (ediff-make-temp-file buf-C buf-C-file-name)))
501 (ediff-setup (get-buffer buf-A) file-A
502 (get-buffer buf-B) file-B
503 (if buf-C-is-alive (get-buffer buf-C))
504 file-C
505 (cons `(lambda ()
506 (delete-file ,file-A)
507 (delete-file ,file-B)
508 (if (stringp ,file-C) (delete-file ,file-C)))
509 startup-hooks)
510 (list (cons 'ediff-job-name job-name))
511 merge-buffer-file))
512 (if (and (stringp file-A) (file-exists-p file-A))
513 (delete-file file-A))
514 (if (and (stringp file-B) (file-exists-p file-B))
515 (delete-file file-B))
516 (if (and (stringp file-C) (file-exists-p file-C))
517 (delete-file file-C)))))
520 ;;; Directory and file group operations
522 ;; Get appropriate default name for directory:
523 ;; If ediff-use-last-dir, use ediff-last-dir-A.
524 ;; In dired mode, use the directory that is under the point (if any);
525 ;; otherwise, use default-directory
526 (defun ediff-get-default-directory-name ()
527 (cond (ediff-use-last-dir ediff-last-dir-A)
528 ((eq major-mode 'dired-mode)
529 (let ((f (dired-get-filename nil 'noerror)))
530 (if (and (stringp f) (file-directory-p f))
532 default-directory)))
533 (t default-directory)))
536 ;;;###autoload
537 (defun ediff-directories (dir1 dir2 regexp)
538 "Run Ediff on a pair of directories, DIR1 and DIR2, comparing files that have
539 the same name in both. The third argument, REGEXP, is nil or a regular
540 expression; only file names that match the regexp are considered."
541 (interactive
542 (let ((dir-A (ediff-get-default-directory-name))
543 (default-regexp (eval ediff-default-filtering-regexp))
545 (list (setq f (read-directory-name
546 "Directory A to compare: " dir-A nil 'must-match))
547 (read-directory-name "Directory B to compare: "
548 (if ediff-use-last-dir
549 ediff-last-dir-B
550 (ediff-strip-last-dir f))
551 nil 'must-match)
552 (read-string
553 (if (stringp default-regexp)
554 (format "Filter through regular expression (default %s): "
555 default-regexp)
556 "Filter through regular expression: ")
558 'ediff-filtering-regexp-history
559 (eval ediff-default-filtering-regexp))
561 (ediff-directories-internal
562 dir1 dir2 nil regexp 'ediff-files 'ediff-directories
565 ;;;###autoload
566 (defalias 'edirs 'ediff-directories)
569 ;;;###autoload
570 (defun ediff-directory-revisions (dir1 regexp)
571 "Run Ediff on a directory, DIR1, comparing its files with their revisions.
572 The second argument, REGEXP, is a regular expression that filters the file
573 names. Only the files that are under revision control are taken into account."
574 (interactive
575 (let ((dir-A (ediff-get-default-directory-name))
576 (default-regexp (eval ediff-default-filtering-regexp))
578 (list (read-directory-name
579 "Directory to compare with revision:" dir-A nil 'must-match)
580 (read-string
581 (if (stringp default-regexp)
582 (format "Filter through regular expression (default %s): "
583 default-regexp)
584 "Filter through regular expression: ")
586 'ediff-filtering-regexp-history
587 (eval ediff-default-filtering-regexp))
589 (ediff-directory-revisions-internal
590 dir1 regexp 'ediff-revision 'ediff-directory-revisions
593 ;;;###autoload
594 (defalias 'edir-revisions 'ediff-directory-revisions)
597 ;;;###autoload
598 (defun ediff-directories3 (dir1 dir2 dir3 regexp)
599 "Run Ediff on three directories, DIR1, DIR2, and DIR3, comparing files that
600 have the same name in all three. The last argument, REGEXP, is nil or a
601 regular expression; only file names that match the regexp are considered."
603 (interactive
604 (let ((dir-A (ediff-get-default-directory-name))
605 (default-regexp (eval ediff-default-filtering-regexp))
607 (list (setq f (read-directory-name "Directory A to compare:" dir-A nil))
608 (setq f (read-directory-name "Directory B to compare:"
609 (if ediff-use-last-dir
610 ediff-last-dir-B
611 (ediff-strip-last-dir f))
612 nil 'must-match))
613 (read-directory-name "Directory C to compare:"
614 (if ediff-use-last-dir
615 ediff-last-dir-C
616 (ediff-strip-last-dir f))
617 nil 'must-match)
618 (read-string
619 (if (stringp default-regexp)
620 (format "Filter through regular expression (default %s): "
621 default-regexp)
622 "Filter through regular expression: ")
624 'ediff-filtering-regexp-history
625 (eval ediff-default-filtering-regexp))
627 (ediff-directories-internal
628 dir1 dir2 dir3 regexp 'ediff-files3 'ediff-directories3
631 ;;;###autoload
632 (defalias 'edirs3 'ediff-directories3)
634 ;;;###autoload
635 (defun ediff-merge-directories (dir1 dir2 regexp &optional merge-autostore-dir)
636 "Run Ediff on a pair of directories, DIR1 and DIR2, merging files that have
637 the same name in both. The third argument, REGEXP, is nil or a regular
638 expression; only file names that match the regexp are considered."
639 (interactive
640 (let ((dir-A (ediff-get-default-directory-name))
641 (default-regexp (eval ediff-default-filtering-regexp))
643 (list (setq f (read-directory-name "Directory A to merge:"
644 dir-A nil 'must-match))
645 (read-directory-name "Directory B to merge:"
646 (if ediff-use-last-dir
647 ediff-last-dir-B
648 (ediff-strip-last-dir f))
649 nil 'must-match)
650 (read-string
651 (if (stringp default-regexp)
652 (format "Filter through regular expression (default %s): "
653 default-regexp)
654 "Filter through regular expression: ")
656 'ediff-filtering-regexp-history
657 (eval ediff-default-filtering-regexp))
659 (ediff-directories-internal
660 dir1 dir2 nil regexp 'ediff-merge-files 'ediff-merge-directories
661 nil merge-autostore-dir
664 ;;;###autoload
665 (defalias 'edirs-merge 'ediff-merge-directories)
667 ;;;###autoload
668 (defun ediff-merge-directories-with-ancestor (dir1 dir2 ancestor-dir regexp
669 &optional
670 merge-autostore-dir)
671 "Merge files in directories DIR1 and DIR2 using files in ANCESTOR-DIR as ancestors.
672 Ediff merges files that have identical names in DIR1, DIR2. If a pair of files
673 in DIR1 and DIR2 doesn't have an ancestor in ANCESTOR-DIR, Ediff will merge
674 without ancestor. The fourth argument, REGEXP, is nil or a regular expression;
675 only file names that match the regexp are considered."
676 (interactive
677 (let ((dir-A (ediff-get-default-directory-name))
678 (default-regexp (eval ediff-default-filtering-regexp))
680 (list (setq f (read-directory-name "Directory A to merge:" dir-A nil))
681 (setq f (read-directory-name "Directory B to merge:"
682 (if ediff-use-last-dir
683 ediff-last-dir-B
684 (ediff-strip-last-dir f))
685 nil 'must-match))
686 (read-directory-name "Ancestor directory:"
687 (if ediff-use-last-dir
688 ediff-last-dir-C
689 (ediff-strip-last-dir f))
690 nil 'must-match)
691 (read-string
692 (if (stringp default-regexp)
693 (format "Filter through regular expression (default %s): "
694 default-regexp)
695 "Filter through regular expression: ")
697 'ediff-filtering-regexp-history
698 (eval ediff-default-filtering-regexp))
700 (ediff-directories-internal
701 dir1 dir2 ancestor-dir regexp
702 'ediff-merge-files-with-ancestor 'ediff-merge-directories-with-ancestor
703 nil merge-autostore-dir
706 ;;;###autoload
707 (defun ediff-merge-directory-revisions (dir1 regexp
708 &optional merge-autostore-dir)
709 "Run Ediff on a directory, DIR1, merging its files with their revisions.
710 The second argument, REGEXP, is a regular expression that filters the file
711 names. Only the files that are under revision control are taken into account."
712 (interactive
713 (let ((dir-A (ediff-get-default-directory-name))
714 (default-regexp (eval ediff-default-filtering-regexp))
716 (list (read-directory-name
717 "Directory to merge with revisions:" dir-A nil 'must-match)
718 (read-string
719 (if (stringp default-regexp)
720 (format "Filter through regular expression (default %s): "
721 default-regexp)
722 "Filter through regular expression: ")
724 'ediff-filtering-regexp-history
725 (eval ediff-default-filtering-regexp))
727 (ediff-directory-revisions-internal
728 dir1 regexp 'ediff-merge-revisions 'ediff-merge-directory-revisions
729 nil merge-autostore-dir
732 ;;;###autoload
733 (defalias 'edir-merge-revisions 'ediff-merge-directory-revisions)
735 ;;;###autoload
736 (defun ediff-merge-directory-revisions-with-ancestor (dir1 regexp
737 &optional
738 merge-autostore-dir)
739 "Run Ediff on a directory, DIR1, merging its files with their revisions and ancestors.
740 The second argument, REGEXP, is a regular expression that filters the file
741 names. Only the files that are under revision control are taken into account."
742 (interactive
743 (let ((dir-A (ediff-get-default-directory-name))
744 (default-regexp (eval ediff-default-filtering-regexp))
746 (list (read-directory-name
747 "Directory to merge with revisions and ancestors:"
748 dir-A nil 'must-match)
749 (read-string
750 (if (stringp default-regexp)
751 (format "Filter through regular expression (default %s): "
752 default-regexp)
753 "Filter through regular expression: ")
755 'ediff-filtering-regexp-history
756 (eval ediff-default-filtering-regexp))
758 (ediff-directory-revisions-internal
759 dir1 regexp 'ediff-merge-revisions-with-ancestor
760 'ediff-merge-directory-revisions-with-ancestor
761 nil merge-autostore-dir
764 ;;;###autoload
765 (defalias
766 'edir-merge-revisions-with-ancestor
767 'ediff-merge-directory-revisions-with-ancestor)
769 ;;;###autoload
770 (defalias 'edirs-merge-with-ancestor 'ediff-merge-directories-with-ancestor)
772 ;; Run ediff-action (ediff-files, ediff-merge, ediff-merge-with-ancestors)
773 ;; on a pair of directories (three directories, in case of ancestor).
774 ;; The third argument, REGEXP, is nil or a regular expression;
775 ;; only file names that match the regexp are considered.
776 ;; JOBNAME is the symbol indicating the meta-job to be performed.
777 ;; MERGE-AUTOSTORE-DIR is the directory in which to store merged files.
778 (defun ediff-directories-internal (dir1 dir2 dir3 regexp action jobname
779 &optional startup-hooks
780 merge-autostore-dir)
781 (if (stringp dir3)
782 (setq dir3 (if (file-directory-p dir3) dir3 (file-name-directory dir3))))
784 (cond ((string= dir1 dir2)
785 (error "Directories A and B are the same: %s" dir1))
786 ((and (eq jobname 'ediff-directories3)
787 (string= dir1 dir3))
788 (error "Directories A and C are the same: %s" dir1))
789 ((and (eq jobname 'ediff-directories3)
790 (string= dir2 dir3))
791 (error "Directories B and C are the same: %s" dir1)))
793 (if merge-autostore-dir
794 (or (stringp merge-autostore-dir)
795 (error "%s: Directory for storing merged files must be a string"
796 jobname)))
797 (let (;; dir-diff-struct is of the form (common-list diff-list)
798 ;; It is a structure where ediff-intersect-directories returns
799 ;; commonalities and differences among directories
800 dir-diff-struct
801 meta-buf)
802 (if (and ediff-autostore-merges
803 (ediff-merge-metajob jobname)
804 (not merge-autostore-dir))
805 (setq merge-autostore-dir
806 (read-directory-name "Save merged files in directory: "
807 (if ediff-use-last-dir
808 ediff-last-merge-autostore-dir
809 (ediff-strip-last-dir dir1))
811 'must-match)))
812 ;; verify we are not merging into an orig directory
813 (if merge-autostore-dir
814 (cond ((and (stringp dir1) (string= merge-autostore-dir dir1))
815 (or (y-or-n-p
816 "Directory for saving merged files = Directory A. Sure? ")
817 (error "Directory merge aborted")))
818 ((and (stringp dir2) (string= merge-autostore-dir dir2))
819 (or (y-or-n-p
820 "Directory for saving merged files = Directory B. Sure? ")
821 (error "Directory merge aborted")))
822 ((and (stringp dir3) (string= merge-autostore-dir dir3))
823 (or (y-or-n-p
824 "Directory for saving merged files = Ancestor Directory. Sure? ")
825 (error "Directory merge aborted")))))
827 (setq dir-diff-struct (ediff-intersect-directories
828 jobname
829 regexp dir1 dir2 dir3 merge-autostore-dir))
830 (setq startup-hooks
831 ;; this sets various vars in the meta buffer inside
832 ;; ediff-prepare-meta-buffer
833 (cons `(lambda ()
834 ;; tell what to do if the user clicks on a session record
835 (setq ediff-session-action-function (quote ,action))
836 ;; set ediff-dir-difference-list
837 (setq ediff-dir-difference-list
838 (cdr (quote ,dir-diff-struct))))
839 startup-hooks))
840 (setq meta-buf (ediff-prepare-meta-buffer
841 'ediff-filegroup-action
842 (car dir-diff-struct)
843 "*Ediff Session Group Panel"
844 'ediff-redraw-directory-group-buffer
845 jobname
846 startup-hooks))
847 (ediff-show-meta-buffer meta-buf)
850 ;; MERGE-AUTOSTORE-DIR can be given to tell ediff where to store the merged
851 ;; files
852 (defun ediff-directory-revisions-internal (dir1 regexp action jobname
853 &optional startup-hooks
854 merge-autostore-dir)
855 (setq dir1 (if (file-directory-p dir1) dir1 (file-name-directory dir1)))
857 (if merge-autostore-dir
858 (or (stringp merge-autostore-dir)
859 (error "%S: Directory for storing merged files must be a string"
860 jobname)))
861 (let (file-list meta-buf)
862 (if (and ediff-autostore-merges
863 (ediff-merge-metajob jobname)
864 (not merge-autostore-dir))
865 (setq merge-autostore-dir
866 (read-directory-name "Save merged files in directory: "
867 (if ediff-use-last-dir
868 ediff-last-merge-autostore-dir
869 (ediff-strip-last-dir dir1))
871 'must-match)))
872 ;; verify merge-autostore-dir != dir1
873 (if (and merge-autostore-dir
874 (stringp dir1)
875 (string= merge-autostore-dir dir1))
876 (or (y-or-n-p
877 "Directory for saving merged file = directory A. Sure? ")
878 (error "Merge of directory revisions aborted")))
880 (setq file-list
881 (ediff-get-directory-files-under-revision
882 jobname regexp dir1 merge-autostore-dir))
883 (setq startup-hooks
884 ;; this sets various vars in the meta buffer inside
885 ;; ediff-prepare-meta-buffer
886 (cons `(lambda ()
887 ;; tell what to do if the user clicks on a session record
888 (setq ediff-session-action-function (quote ,action)))
889 startup-hooks))
890 (setq meta-buf (ediff-prepare-meta-buffer
891 'ediff-filegroup-action
892 file-list
893 "*Ediff Session Group Panel"
894 'ediff-redraw-directory-group-buffer
895 jobname
896 startup-hooks))
897 (ediff-show-meta-buffer meta-buf)
901 ;;; Compare regions and windows
903 ;;;###autoload
904 (defun ediff-windows-wordwise (dumb-mode &optional wind-A wind-B startup-hooks)
905 "Compare WIND-A and WIND-B, which are selected by clicking, wordwise.
906 With prefix argument, DUMB-MODE, or on a non-windowing display, works as
907 follows:
908 If WIND-A is nil, use selected window.
909 If WIND-B is nil, use window next to WIND-A."
910 (interactive "P")
911 (ediff-windows dumb-mode wind-A wind-B
912 startup-hooks 'ediff-windows-wordwise 'word-mode))
914 ;;;###autoload
915 (defun ediff-windows-linewise (dumb-mode &optional wind-A wind-B startup-hooks)
916 "Compare WIND-A and WIND-B, which are selected by clicking, linewise.
917 With prefix argument, DUMB-MODE, or on a non-windowing display, works as
918 follows:
919 If WIND-A is nil, use selected window.
920 If WIND-B is nil, use window next to WIND-A."
921 (interactive "P")
922 (ediff-windows dumb-mode wind-A wind-B
923 startup-hooks 'ediff-windows-linewise nil))
925 ;; Compare WIND-A and WIND-B, which are selected by clicking.
926 ;; With prefix argument, DUMB-MODE, or on a non-windowing display,
927 ;; works as follows:
928 ;; If WIND-A is nil, use selected window.
929 ;; If WIND-B is nil, use window next to WIND-A.
930 (defun ediff-windows (dumb-mode wind-A wind-B startup-hooks job-name word-mode)
931 (if (or dumb-mode (not (ediff-window-display-p)))
932 (setq wind-A (ediff-get-next-window wind-A nil)
933 wind-B (ediff-get-next-window wind-B wind-A))
934 (setq wind-A (ediff-get-window-by-clicking wind-A nil 1)
935 wind-B (ediff-get-window-by-clicking wind-B wind-A 2)))
937 (let ((buffer-A (window-buffer wind-A))
938 (buffer-B (window-buffer wind-B))
939 beg-A end-A beg-B end-B)
941 (save-excursion
942 (save-window-excursion
943 (sit-for 0) ; sync before using window-start/end -- a precaution
944 (select-window wind-A)
945 (setq beg-A (window-start)
946 end-A (window-end))
947 (select-window wind-B)
948 (setq beg-B (window-start)
949 end-B (window-end))))
950 (setq buffer-A
951 (ediff-clone-buffer-for-window-comparison
952 buffer-A wind-A "-Window.A-")
953 buffer-B
954 (ediff-clone-buffer-for-window-comparison
955 buffer-B wind-B "-Window.B-"))
956 (ediff-regions-internal
957 buffer-A beg-A end-A buffer-B beg-B end-B
958 startup-hooks job-name word-mode nil)))
961 ;;;###autoload
962 (defun ediff-regions-wordwise (buffer-A buffer-B &optional startup-hooks)
963 "Run Ediff on a pair of regions in specified buffers.
964 Regions \(i.e., point and mark\) can be set in advance or marked interactively.
965 This function is effective only for relatively small regions, up to 200
966 lines. For large regions, use `ediff-regions-linewise'."
967 (interactive
968 (let (bf)
969 (list (setq bf (read-buffer "Region's A buffer: "
970 (ediff-other-buffer "") t))
971 (read-buffer "Region's B buffer: "
972 (progn
973 ;; realign buffers so that two visible bufs will be
974 ;; at the top
975 (save-window-excursion (other-window 1))
976 (ediff-other-buffer bf))
977 t))))
978 (if (not (ediff-buffer-live-p buffer-A))
979 (error "Buffer %S doesn't exist" buffer-A))
980 (if (not (ediff-buffer-live-p buffer-B))
981 (error "Buffer %S doesn't exist" buffer-B))
984 (let ((buffer-A
985 (ediff-clone-buffer-for-region-comparison buffer-A "-Region.A-"))
986 (buffer-B
987 (ediff-clone-buffer-for-region-comparison buffer-B "-Region.B-"))
988 reg-A-beg reg-A-end reg-B-beg reg-B-end)
989 (with-current-buffer buffer-A
990 (setq reg-A-beg (region-beginning)
991 reg-A-end (region-end))
992 (set-buffer buffer-B)
993 (setq reg-B-beg (region-beginning)
994 reg-B-end (region-end)))
996 (ediff-regions-internal
997 (get-buffer buffer-A) reg-A-beg reg-A-end
998 (get-buffer buffer-B) reg-B-beg reg-B-end
999 startup-hooks 'ediff-regions-wordwise 'word-mode nil)))
1001 ;;;###autoload
1002 (defun ediff-regions-linewise (buffer-A buffer-B &optional startup-hooks)
1003 "Run Ediff on a pair of regions in specified buffers.
1004 Regions \(i.e., point and mark\) can be set in advance or marked interactively.
1005 Each region is enlarged to contain full lines.
1006 This function is effective for large regions, over 100-200
1007 lines. For small regions, use `ediff-regions-wordwise'."
1008 (interactive
1009 (let (bf)
1010 (list (setq bf (read-buffer "Region A's buffer: "
1011 (ediff-other-buffer "") t))
1012 (read-buffer "Region B's buffer: "
1013 (progn
1014 ;; realign buffers so that two visible bufs will be
1015 ;; at the top
1016 (save-window-excursion (other-window 1))
1017 (ediff-other-buffer bf))
1018 t))))
1019 (if (not (ediff-buffer-live-p buffer-A))
1020 (error "Buffer %S doesn't exist" buffer-A))
1021 (if (not (ediff-buffer-live-p buffer-B))
1022 (error "Buffer %S doesn't exist" buffer-B))
1024 (let ((buffer-A
1025 (ediff-clone-buffer-for-region-comparison buffer-A "-Region.A-"))
1026 (buffer-B
1027 (ediff-clone-buffer-for-region-comparison buffer-B "-Region.B-"))
1028 reg-A-beg reg-A-end reg-B-beg reg-B-end)
1029 (with-current-buffer buffer-A
1030 (setq reg-A-beg (region-beginning)
1031 reg-A-end (region-end))
1032 ;; enlarge the region to hold full lines
1033 (goto-char reg-A-beg)
1034 (beginning-of-line)
1035 (setq reg-A-beg (point))
1036 (goto-char reg-A-end)
1037 (end-of-line)
1038 (or (eobp) (forward-char)) ; include the newline char
1039 (setq reg-A-end (point))
1041 (set-buffer buffer-B)
1042 (setq reg-B-beg (region-beginning)
1043 reg-B-end (region-end))
1044 ;; enlarge the region to hold full lines
1045 (goto-char reg-B-beg)
1046 (beginning-of-line)
1047 (setq reg-B-beg (point))
1048 (goto-char reg-B-end)
1049 (end-of-line)
1050 (or (eobp) (forward-char)) ; include the newline char
1051 (setq reg-B-end (point))
1052 ) ; save excursion
1054 (ediff-regions-internal
1055 (get-buffer buffer-A) reg-A-beg reg-A-end
1056 (get-buffer buffer-B) reg-B-beg reg-B-end
1057 startup-hooks 'ediff-regions-linewise nil nil))) ; no word mode
1059 ;; compare region beg-A to end-A of buffer-A
1060 ;; to regions beg-B -- end-B in buffer-B.
1061 (defun ediff-regions-internal (buffer-A beg-A end-A buffer-B beg-B end-B
1062 startup-hooks job-name word-mode
1063 setup-parameters)
1064 (let ((tmp-buffer (get-buffer-create ediff-tmp-buffer))
1065 overl-A overl-B
1066 file-A file-B)
1067 (unwind-protect
1068 (progn
1069 ;; in case beg/end-A/B aren't markers--make them into markers
1070 (ediff-with-current-buffer buffer-A
1071 (setq beg-A (move-marker (make-marker) beg-A)
1072 end-A (move-marker (make-marker) end-A)))
1073 (ediff-with-current-buffer buffer-B
1074 (setq beg-B (move-marker (make-marker) beg-B)
1075 end-B (move-marker (make-marker) end-B)))
1077 ;; make file-A
1078 (if word-mode
1079 (ediff-wordify beg-A end-A buffer-A tmp-buffer)
1080 (ediff-copy-to-buffer beg-A end-A buffer-A tmp-buffer))
1081 (setq file-A (ediff-make-temp-file tmp-buffer "regA"))
1083 ;; make file-B
1084 (if word-mode
1085 (ediff-wordify beg-B end-B buffer-B tmp-buffer)
1086 (ediff-copy-to-buffer beg-B end-B buffer-B tmp-buffer))
1087 (setq file-B (ediff-make-temp-file tmp-buffer "regB"))
1089 (setq overl-A (ediff-make-bullet-proof-overlay beg-A end-A buffer-A))
1090 (setq overl-B (ediff-make-bullet-proof-overlay beg-B end-B buffer-B))
1091 (ediff-setup buffer-A file-A
1092 buffer-B file-B
1093 nil nil ; buffer & file C
1094 (cons `(lambda ()
1095 (delete-file ,file-A)
1096 (delete-file ,file-B))
1097 startup-hooks)
1098 (append
1099 (list (cons 'ediff-word-mode word-mode)
1100 (cons 'ediff-narrow-bounds (list overl-A overl-B))
1101 (cons 'ediff-job-name job-name))
1102 setup-parameters)))
1103 (if (and (stringp file-A) (file-exists-p file-A))
1104 (delete-file file-A))
1105 (if (and (stringp file-B) (file-exists-p file-B))
1106 (delete-file file-B)))
1110 ;;; Merge files and buffers
1112 ;;;###autoload
1113 (defalias 'ediff-merge 'ediff-merge-files)
1115 (defsubst ediff-merge-on-startup ()
1116 (ediff-do-merge 0)
1117 ;; Can't remember why this is here, but it may cause the automatically merged
1118 ;; buffer to be lost. So, keep the buffer modified.
1119 ;;(ediff-with-current-buffer ediff-buffer-C
1120 ;; (set-buffer-modified-p nil))
1123 ;;;###autoload
1124 (defun ediff-merge-files (file-A file-B
1125 ;; MERGE-BUFFER-FILE is the file to be
1126 ;; associated with the merge buffer
1127 &optional startup-hooks merge-buffer-file)
1128 "Merge two files without ancestor."
1129 (interactive
1130 (let ((dir-A (if ediff-use-last-dir
1131 ediff-last-dir-A
1132 default-directory))
1133 dir-B f)
1134 (list (setq f (ediff-read-file-name
1135 "File A to merge"
1136 dir-A
1137 (ediff-get-default-file-name)
1138 'no-dirs))
1139 (ediff-read-file-name "File B to merge"
1140 (setq dir-B
1141 (if ediff-use-last-dir
1142 ediff-last-dir-B
1143 (file-name-directory f)))
1144 (progn
1145 (ediff-add-to-history
1146 'file-name-history
1147 (ediff-abbreviate-file-name
1148 (expand-file-name
1149 (file-name-nondirectory f)
1150 dir-B)))
1151 (ediff-get-default-file-name f 1)))
1153 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1154 (ediff-files-internal file-A
1155 (if (file-directory-p file-B)
1156 (expand-file-name
1157 (file-name-nondirectory file-A) file-B)
1158 file-B)
1159 nil ; file-C
1160 startup-hooks
1161 'ediff-merge-files
1162 merge-buffer-file))
1164 ;;;###autoload
1165 (defun ediff-merge-files-with-ancestor (file-A file-B file-ancestor
1166 &optional
1167 startup-hooks
1168 ;; MERGE-BUFFER-FILE is the file
1169 ;; to be associated with the
1170 ;; merge buffer
1171 merge-buffer-file)
1172 "Merge two files with ancestor."
1173 (interactive
1174 (let ((dir-A (if ediff-use-last-dir
1175 ediff-last-dir-A
1176 default-directory))
1177 dir-B dir-ancestor f ff)
1178 (list (setq f (ediff-read-file-name
1179 "File A to merge"
1180 dir-A
1181 (ediff-get-default-file-name)
1182 'no-dirs))
1183 (setq ff (ediff-read-file-name "File B to merge"
1184 (setq dir-B
1185 (if ediff-use-last-dir
1186 ediff-last-dir-B
1187 (file-name-directory f)))
1188 (progn
1189 (ediff-add-to-history
1190 'file-name-history
1191 (ediff-abbreviate-file-name
1192 (expand-file-name
1193 (file-name-nondirectory f)
1194 dir-B)))
1195 (ediff-get-default-file-name f 1))))
1196 (ediff-read-file-name "Ancestor file"
1197 (setq dir-ancestor
1198 (if ediff-use-last-dir
1199 ediff-last-dir-ancestor
1200 (file-name-directory ff)))
1201 (progn
1202 (ediff-add-to-history
1203 'file-name-history
1204 (ediff-abbreviate-file-name
1205 (expand-file-name
1206 (file-name-nondirectory ff)
1207 dir-ancestor)))
1208 (ediff-get-default-file-name ff 2)))
1210 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1211 (ediff-files-internal file-A
1212 (if (file-directory-p file-B)
1213 (expand-file-name
1214 (file-name-nondirectory file-A) file-B)
1215 file-B)
1216 file-ancestor
1217 startup-hooks
1218 'ediff-merge-files-with-ancestor
1219 merge-buffer-file))
1221 ;;;###autoload
1222 (defalias 'ediff-merge-with-ancestor 'ediff-merge-files-with-ancestor)
1224 ;;;###autoload
1225 (defun ediff-merge-buffers (buffer-A buffer-B
1226 &optional
1227 ;; MERGE-BUFFER-FILE is the file to be
1228 ;; associated with the merge buffer
1229 startup-hooks job-name merge-buffer-file)
1230 "Merge buffers without ancestor."
1231 (interactive
1232 (let (bf)
1233 (list (setq bf (read-buffer "Buffer A to merge: "
1234 (ediff-other-buffer "") t))
1235 (read-buffer "Buffer B to merge: "
1236 (progn
1237 ;; realign buffers so that two visible bufs will be
1238 ;; at the top
1239 (save-window-excursion (other-window 1))
1240 (ediff-other-buffer bf))
1241 t))))
1243 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1244 (or job-name (setq job-name 'ediff-merge-buffers))
1245 (ediff-buffers-internal
1246 buffer-A buffer-B nil startup-hooks job-name merge-buffer-file))
1248 ;;;###autoload
1249 (defun ediff-merge-buffers-with-ancestor (buffer-A buffer-B buffer-ancestor
1250 &optional
1251 startup-hooks
1252 job-name
1253 ;; MERGE-BUFFER-FILE is the
1254 ;; file to be associated
1255 ;; with the merge buffer
1256 merge-buffer-file)
1257 "Merge buffers with ancestor."
1258 (interactive
1259 (let (bf bff)
1260 (list (setq bf (read-buffer "Buffer A to merge: "
1261 (ediff-other-buffer "") t))
1262 (setq bff (read-buffer "Buffer B to merge: "
1263 (progn
1264 ;; realign buffers so that two visible
1265 ;; bufs will be at the top
1266 (save-window-excursion (other-window 1))
1267 (ediff-other-buffer bf))
1269 (read-buffer "Ancestor buffer: "
1270 (progn
1271 ;; realign buffers so that three visible
1272 ;; bufs will be at the top
1273 (save-window-excursion (other-window 1))
1274 (ediff-other-buffer (list bf bff)))
1278 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1279 (or job-name (setq job-name 'ediff-merge-buffers-with-ancestor))
1280 (ediff-buffers-internal
1281 buffer-A buffer-B buffer-ancestor startup-hooks job-name merge-buffer-file))
1284 ;;;###autoload
1285 (defun ediff-merge-revisions (&optional file startup-hooks merge-buffer-file)
1286 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
1287 "Run Ediff by merging two revisions of a file.
1288 The file is the optional FILE argument or the file visited by the current
1289 buffer."
1290 (interactive)
1291 (if (stringp file) (find-file file))
1292 (let (rev1 rev2)
1293 (setq rev1
1294 (read-string
1295 (format
1296 "Version 1 to merge (default %s's working version): "
1297 (if (stringp file)
1298 (file-name-nondirectory file) "current buffer")))
1299 rev2
1300 (read-string
1301 (format
1302 "Version 2 to merge (default %s): "
1303 (if (stringp file)
1304 (file-name-nondirectory file) "current buffer"))))
1305 (ediff-load-version-control)
1306 ;; ancestor-revision=nil
1307 (funcall
1308 (intern (format "ediff-%S-merge-internal" ediff-version-control-package))
1309 rev1 rev2 nil startup-hooks merge-buffer-file)))
1312 ;;;###autoload
1313 (defun ediff-merge-revisions-with-ancestor (&optional
1314 file startup-hooks
1315 ;; MERGE-BUFFER-FILE is the file to
1316 ;; be associated with the merge
1317 ;; buffer
1318 merge-buffer-file)
1319 "Run Ediff by merging two revisions of a file with a common ancestor.
1320 The file is the optional FILE argument or the file visited by the current
1321 buffer."
1322 (interactive)
1323 (if (stringp file) (find-file file))
1324 (let (rev1 rev2 ancestor-rev)
1325 (setq rev1
1326 (read-string
1327 (format
1328 "Version 1 to merge (default %s's working version): "
1329 (if (stringp file)
1330 (file-name-nondirectory file) "current buffer")))
1331 rev2
1332 (read-string
1333 (format
1334 "Version 2 to merge (default %s): "
1335 (if (stringp file)
1336 (file-name-nondirectory file) "current buffer")))
1337 ancestor-rev
1338 (read-string
1339 (format
1340 "Ancestor version (default %s's base revision): "
1341 (if (stringp file)
1342 (file-name-nondirectory file) "current buffer"))))
1343 (ediff-load-version-control)
1344 (funcall
1345 (intern (format "ediff-%S-merge-internal" ediff-version-control-package))
1346 rev1 rev2 ancestor-rev startup-hooks merge-buffer-file)))
1348 ;;; Apply patch
1349 (defvar ediff-last-dir-patch)
1350 (defvar ediff-patch-default-directory)
1351 (declare-function ediff-get-patch-buffer "ediff-ptch"
1352 (&optional arg patch-buf))
1353 (declare-function ediff-dispatch-file-patching-job "ediff-ptch"
1354 (patch-buf filename &optional startup-hooks))
1356 ;;;###autoload
1357 (defun ediff-patch-file (&optional arg patch-buf)
1358 "Query for a file name, and then run Ediff by patching that file.
1359 If optional PATCH-BUF is given, use the patch in that buffer
1360 and don't ask the user.
1361 If prefix argument, then: if even argument, assume that the patch is in a
1362 buffer. If odd -- assume it is in a file."
1363 (interactive "P")
1364 (let (source-dir source-file)
1365 (require 'ediff-ptch)
1366 (setq patch-buf
1367 (ediff-get-patch-buffer
1368 (if arg (prefix-numeric-value arg)) patch-buf))
1369 (setq source-dir (cond (ediff-use-last-dir ediff-last-dir-patch)
1370 ((and (not ediff-patch-default-directory)
1371 (buffer-file-name patch-buf))
1372 (file-name-directory
1373 (expand-file-name
1374 (buffer-file-name patch-buf))))
1375 (t default-directory)))
1376 (setq source-file
1377 (read-file-name
1378 "File to patch (directory, if multifile patch): "
1379 ;; use an explicit initial file
1380 source-dir nil nil (ediff-get-default-file-name)))
1381 (ediff-dispatch-file-patching-job patch-buf source-file)))
1383 (declare-function ediff-patch-buffer-internal "ediff-ptch"
1384 (patch-buf buf-to-patch-name &optional startup-hooks))
1386 ;;;###autoload
1387 (defun ediff-patch-buffer (&optional arg patch-buf)
1388 "Run Ediff by patching the buffer specified at prompt.
1389 Without the optional prefix ARG, asks if the patch is in some buffer and
1390 prompts for the buffer or a file, depending on the answer.
1391 With ARG=1, assumes the patch is in a file and prompts for the file.
1392 With ARG=2, assumes the patch is in a buffer and prompts for the buffer.
1393 PATCH-BUF is an optional argument, which specifies the buffer that contains the
1394 patch. If not given, the user is prompted according to the prefix argument."
1395 (interactive "P")
1396 (require 'ediff-ptch)
1397 (setq patch-buf
1398 (ediff-get-patch-buffer
1399 (if arg (prefix-numeric-value arg)) patch-buf))
1400 (ediff-patch-buffer-internal
1401 patch-buf
1402 (read-buffer
1403 "Which buffer to patch? "
1404 (ediff-other-buffer patch-buf))))
1407 ;;;###autoload
1408 (defalias 'epatch 'ediff-patch-file)
1409 ;;;###autoload
1410 (defalias 'epatch-buffer 'ediff-patch-buffer)
1415 ;;; Versions Control functions
1417 ;;;###autoload
1418 (defun ediff-revision (&optional file startup-hooks)
1419 "Run Ediff by comparing versions of a file.
1420 The file is an optional FILE argument or the file entered at the prompt.
1421 Default: the file visited by the current buffer.
1422 Uses `vc.el' or `rcs.el' depending on `ediff-version-control-package'."
1423 ;; if buffer is non-nil, use that buffer instead of the current buffer
1424 (interactive "P")
1425 (if (not (stringp file))
1426 (setq file
1427 (ediff-read-file-name "Compare revisions for file"
1428 (if ediff-use-last-dir
1429 ediff-last-dir-A
1430 default-directory)
1431 (ediff-get-default-file-name)
1432 'no-dirs)))
1433 (find-file file)
1434 (if (and (buffer-modified-p)
1435 (y-or-n-p (format "Buffer %s is modified. Save buffer? "
1436 (buffer-name))))
1437 (save-buffer (current-buffer)))
1438 (let (rev1 rev2)
1439 (setq rev1
1440 (read-string
1441 (format "Revision 1 to compare (default %s's latest revision): "
1442 (file-name-nondirectory file)))
1443 rev2
1444 (read-string
1445 (format "Revision 2 to compare (default %s's current state): "
1446 (file-name-nondirectory file))))
1447 (ediff-load-version-control)
1448 (funcall
1449 (intern (format "ediff-%S-internal" ediff-version-control-package))
1450 rev1 rev2 startup-hooks)
1454 ;;;###autoload
1455 (defalias 'erevision 'ediff-revision)
1458 ;; Test if version control package is loaded and load if not
1459 ;; Is SILENT is non-nil, don't report error if package is not found.
1460 (defun ediff-load-version-control (&optional silent)
1461 (require 'ediff-vers)
1462 (or (featurep ediff-version-control-package)
1463 (if (locate-library (symbol-name ediff-version-control-package))
1464 (progn
1465 (message "") ; kill the message from `locate-library'
1466 (require ediff-version-control-package))
1467 (or silent
1468 (error "Version control package %S.el not found. Use vc.el instead"
1469 ediff-version-control-package)))))
1472 ;;;###autoload
1473 (defun ediff-version ()
1474 "Return string describing the version of Ediff.
1475 When called interactively, displays the version."
1476 (interactive)
1477 (if (if (featurep 'xemacs)
1478 (interactive-p)
1479 (called-interactively-p 'interactive))
1480 (message "%s" (ediff-version))
1481 (format "Ediff %s of %s" ediff-version ediff-date)))
1483 ;; info is run first, and will autoload info.el.
1484 (declare-function Info-goto-node "info" (nodename &optional fork))
1486 ;;;###autoload
1487 (defun ediff-documentation (&optional node)
1488 "Display Ediff's manual.
1489 With optional NODE, goes to that node."
1490 (interactive)
1491 (let ((ctl-window ediff-control-window)
1492 (ctl-buf ediff-control-buffer))
1494 (ediff-skip-unsuitable-frames)
1495 (condition-case nil
1496 (progn
1497 (pop-to-buffer (get-buffer-create "*info*"))
1498 (info (if (featurep 'xemacs) "ediff.info" "ediff"))
1499 (if node
1500 (Info-goto-node node)
1501 (message "Type `i' to search for a specific topic"))
1502 (raise-frame (selected-frame)))
1503 (error (beep 1)
1504 (with-output-to-temp-buffer ediff-msg-buffer
1505 (ediff-with-current-buffer standard-output
1506 (fundamental-mode))
1507 (princ ediff-BAD-INFO))
1508 (if (window-live-p ctl-window)
1509 (progn
1510 (select-window ctl-window)
1511 (set-window-buffer ctl-window ctl-buf)))))))
1514 (dolist (mess '("^Errors in diff output. Diff output is in "
1515 "^Hmm... I don't see an Ediff command around here...$"
1516 "^Undocumented command! Type `G' in Ediff Control Panel to drop a note to the Ediff maintainer$"
1517 ": This command runs in Ediff Control Buffer only!$"
1518 ": Invalid op in ediff-check-version$"
1519 "^ediff-shrink-window-C can be used only for merging jobs$"
1520 "^Lost difference info on these directories$"
1521 "^This command is inapplicable in the present context$"
1522 "^This session group has no parent$"
1523 "^Can't hide active session, $"
1524 "^Ediff: something wrong--no multiple diffs buffer$"
1525 "^Can't make context diff for Session $"
1526 "^The patch buffer wasn't found$"
1527 "^Aborted$"
1528 "^This Ediff session is not part of a session group$"
1529 "^No active Ediff sessions or corrupted session registry$"
1530 "^No session info in this line$"
1531 "^`.*' is not an ordinary file$"
1532 "^Patch appears to have failed$"
1533 "^Recomputation of differences cancelled$"
1534 "^No fine differences in this mode$"
1535 "^Lost connection to ancestor buffer...sorry$"
1536 "^Not merging with ancestor$"
1537 "^Don't know how to toggle read-only in buffer "
1538 "Emacs is not running as a window application$"
1539 "^This command makes sense only when merging with an ancestor$"
1540 "^At end of the difference list$"
1541 "^At beginning of the difference list$"
1542 "^Nothing saved for diff .* in buffer "
1543 "^Buffer is out of sync for file "
1544 "^Buffer out of sync for file "
1545 "^Output from `diff' not found$"
1546 "^You forgot to specify a region in buffer "
1547 "^All right. Make up your mind and come back...$"
1548 "^Current buffer is not visiting any file$"
1549 "^Failed to retrieve revision: $"
1550 "^Can't determine display width.$"
1551 "^File `.*' does not exist or is not readable$"
1552 "^File `.*' is a directory$"
1553 "^Buffer .* doesn't exist$"
1554 "^Directories . and . are the same: "
1555 "^Directory merge aborted$"
1556 "^Merge of directory revisions aborted$"
1557 "^Buffer .* doesn't exist$"
1558 "^There is no file to merge$"
1559 "^Version control package .*.el not found. Use vc.el instead$"))
1560 (add-to-list 'debug-ignored-errors mess))
1563 (require 'ediff-util)
1565 (run-hooks 'ediff-load-hook)
1568 ;; Local Variables:
1569 ;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
1570 ;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1)
1571 ;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
1572 ;; End:
1574 ;;; ediff.el ends here