* lisp/eshell/esh-io.el (eshell-get-target): Better detection of read-only file ...
[emacs.git] / lisp / ediff.el
blob97dc537cd7e3ed9ed4de05fa21ae4e2322b66a60
1 ;;; ediff.el --- a comprehensive visual interface to diff & patch
3 ;; Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
4 ;; 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
7 ;; Created: February 2, 1994
8 ;; Keywords: comparing, merging, patching, tools, unix
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 ;;; Acknowledgements:
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))))
120 (eval-when-compile
121 (require 'dired)
122 (require 'ediff-util)
123 (require 'ediff-ptch))
124 ;; end pacifier
126 (require 'ediff-init)
127 (require 'ediff-mult) ; required because of the registry stuff
129 (defgroup ediff nil
130 "A comprehensive visual interface to diff & patch."
131 :tag "Ediff"
132 :group 'tools)
135 (defcustom ediff-use-last-dir nil
136 "If t, Ediff will use previous directory as default when reading file name."
137 :type 'boolean
138 :group 'ediff)
140 ;; Last directory used by an Ediff command for file-A.
141 (defvar ediff-last-dir-A nil)
142 ;; Last directory used by an Ediff command for file-B.
143 (defvar ediff-last-dir-B nil)
144 ;; Last directory used by an Ediff command for file-C.
145 (defvar ediff-last-dir-C nil)
146 ;; Last directory used by an Ediff command for the ancestor file.
147 (defvar ediff-last-dir-ancestor nil)
148 ;; Last directory used by an Ediff command as the output directory for merge.
149 (defvar ediff-last-merge-autostore-dir nil)
152 ;; Used as a startup hook to set `_orig' patch file read-only.
153 (defun ediff-set-read-only-in-buf-A ()
154 (ediff-with-current-buffer ediff-buffer-A
155 (toggle-read-only 1)))
157 ;; Return a plausible default for ediff's first file:
158 ;; In dired, return the file number FILENO (or 0) in the list
159 ;; (all-selected-files, filename under the cursor), where directories are
160 ;; ignored. Otherwise, return DEFAULT file name, if non-nil. Else,
161 ;; if the buffer is visiting a file, return that file name.
162 (defun ediff-get-default-file-name (&optional default fileno)
163 (cond ((eq major-mode 'dired-mode)
164 (let ((current (dired-get-filename nil 'no-error))
165 (marked (condition-case nil
166 (dired-get-marked-files 'no-dir)
167 (error nil)))
168 aux-list choices result)
169 (or (integerp fileno) (setq fileno 0))
170 (if (stringp default)
171 (setq aux-list (cons default aux-list)))
172 (if (and (stringp current) (not (file-directory-p current)))
173 (setq aux-list (cons current aux-list)))
174 (setq choices (nconc marked aux-list))
175 (setq result (elt choices fileno))
176 (or result
177 default)))
178 ((stringp default) default)
179 ((buffer-file-name (current-buffer))
180 (file-name-nondirectory (buffer-file-name (current-buffer))))
183 ;;; Compare files/buffers
185 ;;;###autoload
186 (defun ediff-files (file-A file-B &optional startup-hooks)
187 "Run Ediff on a pair of files, FILE-A and FILE-B."
188 (interactive
189 (let ((dir-A (if ediff-use-last-dir
190 ediff-last-dir-A
191 default-directory))
192 dir-B f)
193 (list (setq f (ediff-read-file-name
194 "File A to compare"
195 dir-A
196 (ediff-get-default-file-name)
197 'no-dirs))
198 (ediff-read-file-name "File B to compare"
199 (setq dir-B
200 (if ediff-use-last-dir
201 ediff-last-dir-B
202 (file-name-directory f)))
203 (progn
204 (ediff-add-to-history
205 'file-name-history
206 (ediff-abbreviate-file-name
207 (expand-file-name
208 (file-name-nondirectory f)
209 dir-B)))
210 (ediff-get-default-file-name f 1)))
212 (ediff-files-internal file-A
213 (if (file-directory-p file-B)
214 (expand-file-name
215 (file-name-nondirectory file-A) file-B)
216 file-B)
217 nil ; file-C
218 startup-hooks
219 'ediff-files))
221 ;;;###autoload
222 (defun ediff-files3 (file-A file-B file-C &optional startup-hooks)
223 "Run Ediff on three files, FILE-A, FILE-B, and FILE-C."
224 (interactive
225 (let ((dir-A (if ediff-use-last-dir
226 ediff-last-dir-A
227 default-directory))
228 dir-B dir-C f ff)
229 (list (setq f (ediff-read-file-name
230 "File A to compare"
231 dir-A
232 (ediff-get-default-file-name)
233 'no-dirs))
234 (setq ff (ediff-read-file-name "File B to compare"
235 (setq dir-B
236 (if ediff-use-last-dir
237 ediff-last-dir-B
238 (file-name-directory f)))
239 (progn
240 (ediff-add-to-history
241 'file-name-history
242 (ediff-abbreviate-file-name
243 (expand-file-name
244 (file-name-nondirectory f)
245 dir-B)))
246 (ediff-get-default-file-name f 1))))
247 (ediff-read-file-name "File C to compare"
248 (setq dir-C (if ediff-use-last-dir
249 ediff-last-dir-C
250 (file-name-directory ff)))
251 (progn
252 (ediff-add-to-history
253 'file-name-history
254 (ediff-abbreviate-file-name
255 (expand-file-name
256 (file-name-nondirectory ff)
257 dir-C)))
258 (ediff-get-default-file-name ff 2)))
260 (ediff-files-internal file-A
261 (if (file-directory-p file-B)
262 (expand-file-name
263 (file-name-nondirectory file-A) file-B)
264 file-B)
265 (if (file-directory-p file-C)
266 (expand-file-name
267 (file-name-nondirectory file-A) file-C)
268 file-C)
269 startup-hooks
270 'ediff-files3))
272 ;;;###autoload
273 (defalias 'ediff3 'ediff-files3)
276 (defun ediff-find-file (file-var buffer-name &optional last-dir hooks-var)
277 "Visit FILE and arrange its buffer to Ediff's liking.
278 FILE-VAR is actually a variable symbol whose value must contain a true
279 file name.
280 BUFFER-NAME is a variable symbol, which will get the buffer object into
281 which FILE is read.
282 LAST-DIR is the directory variable symbol where FILE's
283 directory name should be returned. HOOKS-VAR is a variable symbol that will
284 be assigned the hook to be executed after `ediff-startup' is finished.
285 `ediff-find-file' arranges that the temp files it might create will be
286 deleted."
287 (let* ((file (symbol-value file-var))
288 (file-magic (ediff-filename-magic-p file))
289 (temp-file-name-prefix (file-name-nondirectory file)))
290 (cond ((not (file-readable-p file))
291 (error "File `%s' does not exist or is not readable" file))
292 ((file-directory-p file)
293 (error "File `%s' is a directory" file)))
295 ;; some of the commands, below, require full file name
296 (setq file (expand-file-name file))
298 ;; Record the directory of the file
299 (if last-dir
300 (set last-dir (expand-file-name (file-name-directory file))))
302 ;; Setup the buffer
303 (set buffer-name (find-file-noselect file))
305 (ediff-with-current-buffer (symbol-value buffer-name)
306 (widen) ; Make sure the entire file is seen
307 (cond (file-magic ; file has a handler, such as jka-compr-handler or
308 ;;; ange-ftp-hook-function--arrange for temp file
309 (ediff-verify-file-buffer 'magic)
310 (setq file
311 (ediff-make-temp-file
312 (current-buffer) temp-file-name-prefix))
313 (set hooks-var (cons `(lambda () (delete-file ,file))
314 (symbol-value hooks-var))))
315 ;; file processed via auto-mode-alist, a la uncompress.el
316 ((not (equal (file-truename file)
317 (file-truename (buffer-file-name))))
318 (setq file
319 (ediff-make-temp-file
320 (current-buffer) temp-file-name-prefix))
321 (set hooks-var (cons `(lambda () (delete-file ,file))
322 (symbol-value hooks-var))))
323 (t ;; plain file---just check that the file matches the buffer
324 (ediff-verify-file-buffer))))
325 (set file-var file)))
327 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
328 (defun ediff-files-internal (file-A file-B file-C startup-hooks job-name
329 &optional merge-buffer-file)
330 (let (buf-A buf-B buf-C)
331 (if (string= file-A file-B)
332 (error "Files A and B are the same"))
333 (if (stringp file-C)
334 (or (and (string= file-A file-C) (error "Files A and C are the same"))
335 (and (string= file-B file-C) (error "Files B and C are the same"))))
336 (message "Reading file %s ... " file-A)
337 ;;(sit-for 0)
338 (ediff-find-file 'file-A 'buf-A 'ediff-last-dir-A 'startup-hooks)
339 (message "Reading file %s ... " file-B)
340 ;;(sit-for 0)
341 (ediff-find-file 'file-B 'buf-B 'ediff-last-dir-B 'startup-hooks)
342 (if (stringp file-C)
343 (progn
344 (message "Reading file %s ... " file-C)
345 ;;(sit-for 0)
346 (ediff-find-file
347 'file-C 'buf-C
348 (if (eq job-name 'ediff-merge-files-with-ancestor)
349 'ediff-last-dir-ancestor 'ediff-last-dir-C)
350 'startup-hooks)))
351 (ediff-setup buf-A file-A
352 buf-B file-B
353 buf-C file-C
354 startup-hooks
355 (list (cons 'ediff-job-name job-name))
356 merge-buffer-file)))
358 (declare-function diff-latest-backup-file "diff" (fn))
360 ;;;###autoload
361 (defalias 'ediff 'ediff-files)
363 ;;;###autoload
364 (defun ediff-current-file ()
365 "Start ediff between current buffer and its file on disk.
366 This command can be used instead of `revert-buffer'. If there is
367 nothing to revert then this command fails."
368 (interactive)
369 (unless (or revert-buffer-function
370 revert-buffer-insert-file-contents-function
371 (and buffer-file-number
372 (or (buffer-modified-p)
373 (not (verify-visited-file-modtime
374 (current-buffer))))))
375 (error "Nothing to revert"))
376 (let* ((auto-save-p (and (recent-auto-save-p)
377 buffer-auto-save-file-name
378 (file-readable-p buffer-auto-save-file-name)
379 (y-or-n-p
380 "Buffer has been auto-saved recently. Compare with auto-save file? ")))
381 (file-name (if auto-save-p
382 buffer-auto-save-file-name
383 buffer-file-name))
384 (revert-buf-name (concat "FILE=" file-name))
385 (revert-buf (get-buffer revert-buf-name))
386 (current-major major-mode))
387 (unless file-name
388 (error "Buffer does not seem to be associated with any file"))
389 (when revert-buf
390 (kill-buffer revert-buf)
391 (setq revert-buf nil))
392 (setq revert-buf (get-buffer-create revert-buf-name))
393 (with-current-buffer revert-buf
394 (insert-file-contents file-name)
395 ;; Assume same modes:
396 (funcall current-major))
397 (ediff-buffers revert-buf (current-buffer))))
400 ;;;###autoload
401 (defun ediff-backup (file)
402 "Run Ediff on FILE and its backup file.
403 Uses the latest backup, if there are several numerical backups.
404 If this file is a backup, `ediff' it with its original."
405 (interactive (list (read-file-name "Ediff (file with backup): ")))
406 ;; The code is taken from `diff-backup'.
407 (require 'diff)
408 (let (bak ori)
409 (if (backup-file-name-p file)
410 (setq bak file
411 ori (file-name-sans-versions file))
412 (setq bak (or (diff-latest-backup-file file)
413 (error "No backup found for %s" file))
414 ori file))
415 (ediff-files bak ori)))
417 ;;;###autoload
418 (defun ediff-buffers (buffer-A buffer-B &optional startup-hooks job-name)
419 "Run Ediff on a pair of buffers, BUFFER-A and BUFFER-B."
420 (interactive
421 (let (bf)
422 (list (setq bf (read-buffer "Buffer A to compare: "
423 (ediff-other-buffer "") t))
424 (read-buffer "Buffer B to compare: "
425 (progn
426 ;; realign buffers so that two visible bufs will be
427 ;; at the top
428 (save-window-excursion (other-window 1))
429 (ediff-other-buffer bf))
430 t))))
431 (or job-name (setq job-name 'ediff-buffers))
432 (ediff-buffers-internal buffer-A buffer-B nil startup-hooks job-name))
434 ;;;###autoload
435 (defalias 'ebuffers 'ediff-buffers)
438 ;;;###autoload
439 (defun ediff-buffers3 (buffer-A buffer-B buffer-C
440 &optional startup-hooks job-name)
441 "Run Ediff on three buffers, BUFFER-A, BUFFER-B, and BUFFER-C."
442 (interactive
443 (let (bf bff)
444 (list (setq bf (read-buffer "Buffer A to compare: "
445 (ediff-other-buffer "") t))
446 (setq bff (read-buffer "Buffer B to compare: "
447 (progn
448 ;; realign buffers so that two visible
449 ;; bufs will be at the top
450 (save-window-excursion (other-window 1))
451 (ediff-other-buffer bf))
453 (read-buffer "Buffer C to compare: "
454 (progn
455 ;; realign buffers so that three visible
456 ;; bufs will be at the top
457 (save-window-excursion (other-window 1))
458 (ediff-other-buffer (list bf bff)))
461 (or job-name (setq job-name 'ediff-buffers3))
462 (ediff-buffers-internal buffer-A buffer-B buffer-C startup-hooks job-name))
464 ;;;###autoload
465 (defalias 'ebuffers3 'ediff-buffers3)
469 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
470 (defun ediff-buffers-internal (buf-A buf-B buf-C startup-hooks job-name
471 &optional merge-buffer-file)
472 (let* ((buf-A-file-name (buffer-file-name (get-buffer buf-A)))
473 (buf-B-file-name (buffer-file-name (get-buffer buf-B)))
474 (buf-C-is-alive (ediff-buffer-live-p buf-C))
475 (buf-C-file-name (if buf-C-is-alive
476 (buffer-file-name (get-buffer buf-B))))
477 file-A file-B file-C)
478 (unwind-protect
479 (progn
480 (if (not (ediff-buffer-live-p buf-A))
481 (error "Buffer %S doesn't exist" buf-A))
482 (if (not (ediff-buffer-live-p buf-B))
483 (error "Buffer %S doesn't exist" buf-B))
484 (let ((ediff-job-name job-name))
485 (if (and ediff-3way-comparison-job
486 (not buf-C-is-alive))
487 (error "Buffer %S doesn't exist" buf-C)))
488 (if (stringp buf-A-file-name)
489 (setq buf-A-file-name (file-name-nondirectory buf-A-file-name)))
490 (if (stringp buf-B-file-name)
491 (setq buf-B-file-name (file-name-nondirectory buf-B-file-name)))
492 (if (stringp buf-C-file-name)
493 (setq buf-C-file-name (file-name-nondirectory buf-C-file-name)))
495 (setq file-A (ediff-make-temp-file buf-A buf-A-file-name)
496 file-B (ediff-make-temp-file buf-B buf-B-file-name))
497 (if buf-C-is-alive
498 (setq file-C (ediff-make-temp-file buf-C buf-C-file-name)))
500 (ediff-setup (get-buffer buf-A) file-A
501 (get-buffer buf-B) file-B
502 (if buf-C-is-alive (get-buffer buf-C))
503 file-C
504 (cons `(lambda ()
505 (delete-file ,file-A)
506 (delete-file ,file-B)
507 (if (stringp ,file-C) (delete-file ,file-C)))
508 startup-hooks)
509 (list (cons 'ediff-job-name job-name))
510 merge-buffer-file))
511 (if (and (stringp file-A) (file-exists-p file-A))
512 (delete-file file-A))
513 (if (and (stringp file-B) (file-exists-p file-B))
514 (delete-file file-B))
515 (if (and (stringp file-C) (file-exists-p file-C))
516 (delete-file file-C)))))
519 ;;; Directory and file group operations
521 ;; Get appropriate default name for directory:
522 ;; If ediff-use-last-dir, use ediff-last-dir-A.
523 ;; In dired mode, use the directory that is under the point (if any);
524 ;; otherwise, use default-directory
525 (defun ediff-get-default-directory-name ()
526 (cond (ediff-use-last-dir ediff-last-dir-A)
527 ((eq major-mode 'dired-mode)
528 (let ((f (dired-get-filename nil 'noerror)))
529 (if (and (stringp f) (file-directory-p f))
531 default-directory)))
532 (t default-directory)))
535 ;;;###autoload
536 (defun ediff-directories (dir1 dir2 regexp)
537 "Run Ediff on a pair of directories, DIR1 and DIR2, comparing files that have
538 the same name in both. The third argument, REGEXP, is nil or a regular
539 expression; only file names that match the regexp are considered."
540 (interactive
541 (let ((dir-A (ediff-get-default-directory-name))
542 (default-regexp (eval ediff-default-filtering-regexp))
544 (list (setq f (read-directory-name
545 "Directory A to compare:" dir-A nil 'must-match))
546 (read-directory-name "Directory B to compare:"
547 (if ediff-use-last-dir
548 ediff-last-dir-B
549 (ediff-strip-last-dir f))
550 nil 'must-match)
551 (read-string
552 (if (stringp default-regexp)
553 (format "Filter through regular expression (default %s): "
554 default-regexp)
555 "Filter through regular expression: ")
557 'ediff-filtering-regexp-history
558 (eval ediff-default-filtering-regexp))
560 (ediff-directories-internal
561 dir1 dir2 nil regexp 'ediff-files 'ediff-directories
564 ;;;###autoload
565 (defalias 'edirs 'ediff-directories)
568 ;;;###autoload
569 (defun ediff-directory-revisions (dir1 regexp)
570 "Run Ediff on a directory, DIR1, comparing its files with their revisions.
571 The second argument, REGEXP, is a regular expression that filters the file
572 names. Only the files that are under revision control are taken into account."
573 (interactive
574 (let ((dir-A (ediff-get-default-directory-name))
575 (default-regexp (eval ediff-default-filtering-regexp))
577 (list (read-directory-name
578 "Directory to compare with revision:" dir-A nil 'must-match)
579 (read-string
580 (if (stringp default-regexp)
581 (format "Filter through regular expression (default %s): "
582 default-regexp)
583 "Filter through regular expression: ")
585 'ediff-filtering-regexp-history
586 (eval ediff-default-filtering-regexp))
588 (ediff-directory-revisions-internal
589 dir1 regexp 'ediff-revision 'ediff-directory-revisions
592 ;;;###autoload
593 (defalias 'edir-revisions 'ediff-directory-revisions)
596 ;;;###autoload
597 (defun ediff-directories3 (dir1 dir2 dir3 regexp)
598 "Run Ediff on three directories, DIR1, DIR2, and DIR3, comparing files that
599 have the same name in all three. The last argument, REGEXP, is nil or a
600 regular expression; only file names that match the regexp are considered."
602 (interactive
603 (let ((dir-A (ediff-get-default-directory-name))
604 (default-regexp (eval ediff-default-filtering-regexp))
606 (list (setq f (read-directory-name "Directory A to compare:" dir-A nil))
607 (setq f (read-directory-name "Directory B to compare:"
608 (if ediff-use-last-dir
609 ediff-last-dir-B
610 (ediff-strip-last-dir f))
611 nil 'must-match))
612 (read-directory-name "Directory C to compare:"
613 (if ediff-use-last-dir
614 ediff-last-dir-C
615 (ediff-strip-last-dir f))
616 nil 'must-match)
617 (read-string
618 (if (stringp default-regexp)
619 (format "Filter through regular expression (default %s): "
620 default-regexp)
621 "Filter through regular expression: ")
623 'ediff-filtering-regexp-history
624 (eval ediff-default-filtering-regexp))
626 (ediff-directories-internal
627 dir1 dir2 dir3 regexp 'ediff-files3 'ediff-directories3
630 ;;;###autoload
631 (defalias 'edirs3 'ediff-directories3)
633 ;;;###autoload
634 (defun ediff-merge-directories (dir1 dir2 regexp &optional merge-autostore-dir)
635 "Run Ediff on a pair of directories, DIR1 and DIR2, merging files that have
636 the same name in both. The third argument, REGEXP, is nil or a regular
637 expression; only file names that match the regexp are considered."
638 (interactive
639 (let ((dir-A (ediff-get-default-directory-name))
640 (default-regexp (eval ediff-default-filtering-regexp))
642 (list (setq f (read-directory-name "Directory A to merge:"
643 dir-A nil 'must-match))
644 (read-directory-name "Directory B to merge:"
645 (if ediff-use-last-dir
646 ediff-last-dir-B
647 (ediff-strip-last-dir f))
648 nil 'must-match)
649 (read-string
650 (if (stringp default-regexp)
651 (format "Filter through regular expression (default %s): "
652 default-regexp)
653 "Filter through regular expression: ")
655 'ediff-filtering-regexp-history
656 (eval ediff-default-filtering-regexp))
658 (ediff-directories-internal
659 dir1 dir2 nil regexp 'ediff-merge-files 'ediff-merge-directories
660 nil merge-autostore-dir
663 ;;;###autoload
664 (defalias 'edirs-merge 'ediff-merge-directories)
666 ;;;###autoload
667 (defun ediff-merge-directories-with-ancestor (dir1 dir2 ancestor-dir regexp
668 &optional
669 merge-autostore-dir)
670 "Merge files in directories DIR1 and DIR2 using files in ANCESTOR-DIR as ancestors.
671 Ediff merges files that have identical names in DIR1, DIR2. If a pair of files
672 in DIR1 and DIR2 doesn't have an ancestor in ANCESTOR-DIR, Ediff will merge
673 without ancestor. The fourth argument, REGEXP, is nil or a regular expression;
674 only file names that match the regexp are considered."
675 (interactive
676 (let ((dir-A (ediff-get-default-directory-name))
677 (default-regexp (eval ediff-default-filtering-regexp))
679 (list (setq f (read-directory-name "Directory A to merge:" dir-A nil))
680 (setq f (read-directory-name "Directory B to merge:"
681 (if ediff-use-last-dir
682 ediff-last-dir-B
683 (ediff-strip-last-dir f))
684 nil 'must-match))
685 (read-directory-name "Ancestor directory:"
686 (if ediff-use-last-dir
687 ediff-last-dir-C
688 (ediff-strip-last-dir f))
689 nil 'must-match)
690 (read-string
691 (if (stringp default-regexp)
692 (format "Filter through regular expression (default %s): "
693 default-regexp)
694 "Filter through regular expression: ")
696 'ediff-filtering-regexp-history
697 (eval ediff-default-filtering-regexp))
699 (ediff-directories-internal
700 dir1 dir2 ancestor-dir regexp
701 'ediff-merge-files-with-ancestor 'ediff-merge-directories-with-ancestor
702 nil merge-autostore-dir
705 ;;;###autoload
706 (defun ediff-merge-directory-revisions (dir1 regexp
707 &optional merge-autostore-dir)
708 "Run Ediff on a directory, DIR1, merging its files with their revisions.
709 The second argument, REGEXP, is a regular expression that filters the file
710 names. Only the files that are under revision control are taken into account."
711 (interactive
712 (let ((dir-A (ediff-get-default-directory-name))
713 (default-regexp (eval ediff-default-filtering-regexp))
715 (list (read-directory-name
716 "Directory to merge with revisions:" dir-A nil 'must-match)
717 (read-string
718 (if (stringp default-regexp)
719 (format "Filter through regular expression (default %s): "
720 default-regexp)
721 "Filter through regular expression: ")
723 'ediff-filtering-regexp-history
724 (eval ediff-default-filtering-regexp))
726 (ediff-directory-revisions-internal
727 dir1 regexp 'ediff-merge-revisions 'ediff-merge-directory-revisions
728 nil merge-autostore-dir
731 ;;;###autoload
732 (defalias 'edir-merge-revisions 'ediff-merge-directory-revisions)
734 ;;;###autoload
735 (defun ediff-merge-directory-revisions-with-ancestor (dir1 regexp
736 &optional
737 merge-autostore-dir)
738 "Run Ediff on a directory, DIR1, merging its files with their revisions and ancestors.
739 The second argument, REGEXP, is a regular expression that filters the file
740 names. Only the files that are under revision control are taken into account."
741 (interactive
742 (let ((dir-A (ediff-get-default-directory-name))
743 (default-regexp (eval ediff-default-filtering-regexp))
745 (list (read-directory-name
746 "Directory to merge with revisions and ancestors:"
747 dir-A nil 'must-match)
748 (read-string
749 (if (stringp default-regexp)
750 (format "Filter through regular expression (default %s): "
751 default-regexp)
752 "Filter through regular expression: ")
754 'ediff-filtering-regexp-history
755 (eval ediff-default-filtering-regexp))
757 (ediff-directory-revisions-internal
758 dir1 regexp 'ediff-merge-revisions-with-ancestor
759 'ediff-merge-directory-revisions-with-ancestor
760 nil merge-autostore-dir
763 ;;;###autoload
764 (defalias
765 'edir-merge-revisions-with-ancestor
766 'ediff-merge-directory-revisions-with-ancestor)
768 ;;;###autoload
769 (defalias 'edirs-merge-with-ancestor 'ediff-merge-directories-with-ancestor)
771 ;; Run ediff-action (ediff-files, ediff-merge, ediff-merge-with-ancestors)
772 ;; on a pair of directories (three directories, in case of ancestor).
773 ;; The third argument, REGEXP, is nil or a regular expression;
774 ;; only file names that match the regexp are considered.
775 ;; JOBNAME is the symbol indicating the meta-job to be performed.
776 ;; MERGE-AUTOSTORE-DIR is the directory in which to store merged files.
777 (defun ediff-directories-internal (dir1 dir2 dir3 regexp action jobname
778 &optional startup-hooks
779 merge-autostore-dir)
780 (if (stringp dir3)
781 (setq dir3 (if (file-directory-p dir3) dir3 (file-name-directory dir3))))
783 (cond ((string= dir1 dir2)
784 (error "Directories A and B are the same: %s" dir1))
785 ((and (eq jobname 'ediff-directories3)
786 (string= dir1 dir3))
787 (error "Directories A and C are the same: %s" dir1))
788 ((and (eq jobname 'ediff-directories3)
789 (string= dir2 dir3))
790 (error "Directories B and C are the same: %s" dir1)))
792 (if merge-autostore-dir
793 (or (stringp merge-autostore-dir)
794 (error "%s: Directory for storing merged files must be a string"
795 jobname)))
796 (let (;; dir-diff-struct is of the form (common-list diff-list)
797 ;; It is a structure where ediff-intersect-directories returns
798 ;; commonalities and differences among directories
799 dir-diff-struct
800 meta-buf)
801 (if (and ediff-autostore-merges
802 (ediff-merge-metajob jobname)
803 (not merge-autostore-dir))
804 (setq merge-autostore-dir
805 (read-directory-name "Save merged files in directory: "
806 (if ediff-use-last-dir
807 ediff-last-merge-autostore-dir
808 (ediff-strip-last-dir dir1))
810 'must-match)))
811 ;; verify we are not merging into an orig directory
812 (if merge-autostore-dir
813 (cond ((and (stringp dir1) (string= merge-autostore-dir dir1))
814 (or (y-or-n-p
815 "Directory for saving merged files = Directory A. Sure? ")
816 (error "Directory merge aborted")))
817 ((and (stringp dir2) (string= merge-autostore-dir dir2))
818 (or (y-or-n-p
819 "Directory for saving merged files = Directory B. Sure? ")
820 (error "Directory merge aborted")))
821 ((and (stringp dir3) (string= merge-autostore-dir dir3))
822 (or (y-or-n-p
823 "Directory for saving merged files = Ancestor Directory. Sure? ")
824 (error "Directory merge aborted")))))
826 (setq dir-diff-struct (ediff-intersect-directories
827 jobname
828 regexp dir1 dir2 dir3 merge-autostore-dir))
829 (setq startup-hooks
830 ;; this sets various vars in the meta buffer inside
831 ;; ediff-prepare-meta-buffer
832 (cons `(lambda ()
833 ;; tell what to do if the user clicks on a session record
834 (setq ediff-session-action-function (quote ,action))
835 ;; set ediff-dir-difference-list
836 (setq ediff-dir-difference-list
837 (cdr (quote ,dir-diff-struct))))
838 startup-hooks))
839 (setq meta-buf (ediff-prepare-meta-buffer
840 'ediff-filegroup-action
841 (car dir-diff-struct)
842 "*Ediff Session Group Panel"
843 'ediff-redraw-directory-group-buffer
844 jobname
845 startup-hooks))
846 (ediff-show-meta-buffer meta-buf)
849 ;; MERGE-AUTOSTORE-DIR can be given to tell ediff where to store the merged
850 ;; files
851 (defun ediff-directory-revisions-internal (dir1 regexp action jobname
852 &optional startup-hooks
853 merge-autostore-dir)
854 (setq dir1 (if (file-directory-p dir1) dir1 (file-name-directory dir1)))
856 (if merge-autostore-dir
857 (or (stringp merge-autostore-dir)
858 (error "%S: Directory for storing merged files must be a string"
859 jobname)))
860 (let (file-list meta-buf)
861 (if (and ediff-autostore-merges
862 (ediff-merge-metajob jobname)
863 (not merge-autostore-dir))
864 (setq merge-autostore-dir
865 (read-directory-name "Save merged files in directory: "
866 (if ediff-use-last-dir
867 ediff-last-merge-autostore-dir
868 (ediff-strip-last-dir dir1))
870 'must-match)))
871 ;; verify merge-autostore-dir != dir1
872 (if (and merge-autostore-dir
873 (stringp dir1)
874 (string= merge-autostore-dir dir1))
875 (or (y-or-n-p
876 "Directory for saving merged file = directory A. Sure? ")
877 (error "Merge of directory revisions aborted")))
879 (setq file-list
880 (ediff-get-directory-files-under-revision
881 jobname regexp dir1 merge-autostore-dir))
882 (setq startup-hooks
883 ;; this sets various vars in the meta buffer inside
884 ;; ediff-prepare-meta-buffer
885 (cons `(lambda ()
886 ;; tell what to do if the user clicks on a session record
887 (setq ediff-session-action-function (quote ,action)))
888 startup-hooks))
889 (setq meta-buf (ediff-prepare-meta-buffer
890 'ediff-filegroup-action
891 file-list
892 "*Ediff Session Group Panel"
893 'ediff-redraw-directory-group-buffer
894 jobname
895 startup-hooks))
896 (ediff-show-meta-buffer meta-buf)
900 ;;; Compare regions and windows
902 ;;;###autoload
903 (defun ediff-windows-wordwise (dumb-mode &optional wind-A wind-B startup-hooks)
904 "Compare WIND-A and WIND-B, which are selected by clicking, wordwise.
905 With prefix argument, DUMB-MODE, or on a non-windowing display, works as
906 follows:
907 If WIND-A is nil, use selected window.
908 If WIND-B is nil, use window next to WIND-A."
909 (interactive "P")
910 (ediff-windows dumb-mode wind-A wind-B
911 startup-hooks 'ediff-windows-wordwise 'word-mode))
913 ;;;###autoload
914 (defun ediff-windows-linewise (dumb-mode &optional wind-A wind-B startup-hooks)
915 "Compare WIND-A and WIND-B, which are selected by clicking, linewise.
916 With prefix argument, DUMB-MODE, or on a non-windowing display, works as
917 follows:
918 If WIND-A is nil, use selected window.
919 If WIND-B is nil, use window next to WIND-A."
920 (interactive "P")
921 (ediff-windows dumb-mode wind-A wind-B
922 startup-hooks 'ediff-windows-linewise nil))
924 ;; Compare WIND-A and WIND-B, which are selected by clicking.
925 ;; With prefix argument, DUMB-MODE, or on a non-windowing display,
926 ;; works as follows:
927 ;; If WIND-A is nil, use selected window.
928 ;; If WIND-B is nil, use window next to WIND-A.
929 (defun ediff-windows (dumb-mode wind-A wind-B startup-hooks job-name word-mode)
930 (if (or dumb-mode (not (ediff-window-display-p)))
931 (setq wind-A (ediff-get-next-window wind-A nil)
932 wind-B (ediff-get-next-window wind-B wind-A))
933 (setq wind-A (ediff-get-window-by-clicking wind-A nil 1)
934 wind-B (ediff-get-window-by-clicking wind-B wind-A 2)))
936 (let ((buffer-A (window-buffer wind-A))
937 (buffer-B (window-buffer wind-B))
938 beg-A end-A beg-B end-B)
940 (save-excursion
941 (save-window-excursion
942 (sit-for 0) ; sync before using window-start/end -- a precaution
943 (select-window wind-A)
944 (setq beg-A (window-start)
945 end-A (window-end))
946 (select-window wind-B)
947 (setq beg-B (window-start)
948 end-B (window-end))))
949 (setq buffer-A
950 (ediff-clone-buffer-for-window-comparison
951 buffer-A wind-A "-Window.A-")
952 buffer-B
953 (ediff-clone-buffer-for-window-comparison
954 buffer-B wind-B "-Window.B-"))
955 (ediff-regions-internal
956 buffer-A beg-A end-A buffer-B beg-B end-B
957 startup-hooks job-name word-mode nil)))
960 ;;;###autoload
961 (defun ediff-regions-wordwise (buffer-A buffer-B &optional startup-hooks)
962 "Run Ediff on a pair of regions in specified buffers.
963 Regions \(i.e., point and mark\) can be set in advance or marked interactively.
964 This function is effective only for relatively small regions, up to 200
965 lines. For large regions, use `ediff-regions-linewise'."
966 (interactive
967 (let (bf)
968 (list (setq bf (read-buffer "Region's A buffer: "
969 (ediff-other-buffer "") t))
970 (read-buffer "Region's B buffer: "
971 (progn
972 ;; realign buffers so that two visible bufs will be
973 ;; at the top
974 (save-window-excursion (other-window 1))
975 (ediff-other-buffer bf))
976 t))))
977 (if (not (ediff-buffer-live-p buffer-A))
978 (error "Buffer %S doesn't exist" buffer-A))
979 (if (not (ediff-buffer-live-p buffer-B))
980 (error "Buffer %S doesn't exist" buffer-B))
983 (let ((buffer-A
984 (ediff-clone-buffer-for-region-comparison buffer-A "-Region.A-"))
985 (buffer-B
986 (ediff-clone-buffer-for-region-comparison buffer-B "-Region.B-"))
987 reg-A-beg reg-A-end reg-B-beg reg-B-end)
988 (with-current-buffer buffer-A
989 (setq reg-A-beg (region-beginning)
990 reg-A-end (region-end))
991 (set-buffer buffer-B)
992 (setq reg-B-beg (region-beginning)
993 reg-B-end (region-end)))
995 (ediff-regions-internal
996 (get-buffer buffer-A) reg-A-beg reg-A-end
997 (get-buffer buffer-B) reg-B-beg reg-B-end
998 startup-hooks 'ediff-regions-wordwise 'word-mode nil)))
1000 ;;;###autoload
1001 (defun ediff-regions-linewise (buffer-A buffer-B &optional startup-hooks)
1002 "Run Ediff on a pair of regions in specified buffers.
1003 Regions \(i.e., point and mark\) can be set in advance or marked interactively.
1004 Each region is enlarged to contain full lines.
1005 This function is effective for large regions, over 100-200
1006 lines. For small regions, use `ediff-regions-wordwise'."
1007 (interactive
1008 (let (bf)
1009 (list (setq bf (read-buffer "Region A's buffer: "
1010 (ediff-other-buffer "") t))
1011 (read-buffer "Region B's buffer: "
1012 (progn
1013 ;; realign buffers so that two visible bufs will be
1014 ;; at the top
1015 (save-window-excursion (other-window 1))
1016 (ediff-other-buffer bf))
1017 t))))
1018 (if (not (ediff-buffer-live-p buffer-A))
1019 (error "Buffer %S doesn't exist" buffer-A))
1020 (if (not (ediff-buffer-live-p buffer-B))
1021 (error "Buffer %S doesn't exist" buffer-B))
1023 (let ((buffer-A
1024 (ediff-clone-buffer-for-region-comparison buffer-A "-Region.A-"))
1025 (buffer-B
1026 (ediff-clone-buffer-for-region-comparison buffer-B "-Region.B-"))
1027 reg-A-beg reg-A-end reg-B-beg reg-B-end)
1028 (with-current-buffer buffer-A
1029 (setq reg-A-beg (region-beginning)
1030 reg-A-end (region-end))
1031 ;; enlarge the region to hold full lines
1032 (goto-char reg-A-beg)
1033 (beginning-of-line)
1034 (setq reg-A-beg (point))
1035 (goto-char reg-A-end)
1036 (end-of-line)
1037 (or (eobp) (forward-char)) ; include the newline char
1038 (setq reg-A-end (point))
1040 (set-buffer buffer-B)
1041 (setq reg-B-beg (region-beginning)
1042 reg-B-end (region-end))
1043 ;; enlarge the region to hold full lines
1044 (goto-char reg-B-beg)
1045 (beginning-of-line)
1046 (setq reg-B-beg (point))
1047 (goto-char reg-B-end)
1048 (end-of-line)
1049 (or (eobp) (forward-char)) ; include the newline char
1050 (setq reg-B-end (point))
1051 ) ; save excursion
1053 (ediff-regions-internal
1054 (get-buffer buffer-A) reg-A-beg reg-A-end
1055 (get-buffer buffer-B) reg-B-beg reg-B-end
1056 startup-hooks 'ediff-regions-linewise nil nil))) ; no word mode
1058 ;; compare region beg-A to end-A of buffer-A
1059 ;; to regions beg-B -- end-B in buffer-B.
1060 (defun ediff-regions-internal (buffer-A beg-A end-A buffer-B beg-B end-B
1061 startup-hooks job-name word-mode
1062 setup-parameters)
1063 (let ((tmp-buffer (get-buffer-create ediff-tmp-buffer))
1064 overl-A overl-B
1065 file-A file-B)
1066 (unwind-protect
1067 (progn
1068 ;; in case beg/end-A/B aren't markers--make them into markers
1069 (ediff-with-current-buffer buffer-A
1070 (setq beg-A (move-marker (make-marker) beg-A)
1071 end-A (move-marker (make-marker) end-A)))
1072 (ediff-with-current-buffer buffer-B
1073 (setq beg-B (move-marker (make-marker) beg-B)
1074 end-B (move-marker (make-marker) end-B)))
1076 ;; make file-A
1077 (if word-mode
1078 (ediff-wordify beg-A end-A buffer-A tmp-buffer)
1079 (ediff-copy-to-buffer beg-A end-A buffer-A tmp-buffer))
1080 (setq file-A (ediff-make-temp-file tmp-buffer "regA"))
1082 ;; make file-B
1083 (if word-mode
1084 (ediff-wordify beg-B end-B buffer-B tmp-buffer)
1085 (ediff-copy-to-buffer beg-B end-B buffer-B tmp-buffer))
1086 (setq file-B (ediff-make-temp-file tmp-buffer "regB"))
1088 (setq overl-A (ediff-make-bullet-proof-overlay beg-A end-A buffer-A))
1089 (setq overl-B (ediff-make-bullet-proof-overlay beg-B end-B buffer-B))
1090 (ediff-setup buffer-A file-A
1091 buffer-B file-B
1092 nil nil ; buffer & file C
1093 (cons `(lambda ()
1094 (delete-file ,file-A)
1095 (delete-file ,file-B))
1096 startup-hooks)
1097 (append
1098 (list (cons 'ediff-word-mode word-mode)
1099 (cons 'ediff-narrow-bounds (list overl-A overl-B))
1100 (cons 'ediff-job-name job-name))
1101 setup-parameters)))
1102 (if (and (stringp file-A) (file-exists-p file-A))
1103 (delete-file file-A))
1104 (if (and (stringp file-B) (file-exists-p file-B))
1105 (delete-file file-B)))
1109 ;;; Merge files and buffers
1111 ;;;###autoload
1112 (defalias 'ediff-merge 'ediff-merge-files)
1114 (defsubst ediff-merge-on-startup ()
1115 (ediff-do-merge 0)
1116 ;; Can't remember why this is here, but it may cause the automatically merged
1117 ;; buffer to be lost. So, keep the buffer modified.
1118 ;;(ediff-with-current-buffer ediff-buffer-C
1119 ;; (set-buffer-modified-p nil))
1122 ;;;###autoload
1123 (defun ediff-merge-files (file-A file-B
1124 ;; MERGE-BUFFER-FILE is the file to be
1125 ;; associated with the merge buffer
1126 &optional startup-hooks merge-buffer-file)
1127 "Merge two files without ancestor."
1128 (interactive
1129 (let ((dir-A (if ediff-use-last-dir
1130 ediff-last-dir-A
1131 default-directory))
1132 dir-B f)
1133 (list (setq f (ediff-read-file-name
1134 "File A to merge"
1135 dir-A
1136 (ediff-get-default-file-name)
1137 'no-dirs))
1138 (ediff-read-file-name "File B to merge"
1139 (setq dir-B
1140 (if ediff-use-last-dir
1141 ediff-last-dir-B
1142 (file-name-directory f)))
1143 (progn
1144 (ediff-add-to-history
1145 'file-name-history
1146 (ediff-abbreviate-file-name
1147 (expand-file-name
1148 (file-name-nondirectory f)
1149 dir-B)))
1150 (ediff-get-default-file-name f 1)))
1152 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1153 (ediff-files-internal file-A
1154 (if (file-directory-p file-B)
1155 (expand-file-name
1156 (file-name-nondirectory file-A) file-B)
1157 file-B)
1158 nil ; file-C
1159 startup-hooks
1160 'ediff-merge-files
1161 merge-buffer-file))
1163 ;;;###autoload
1164 (defun ediff-merge-files-with-ancestor (file-A file-B file-ancestor
1165 &optional
1166 startup-hooks
1167 ;; MERGE-BUFFER-FILE is the file
1168 ;; to be associated with the
1169 ;; merge buffer
1170 merge-buffer-file)
1171 "Merge two files with ancestor."
1172 (interactive
1173 (let ((dir-A (if ediff-use-last-dir
1174 ediff-last-dir-A
1175 default-directory))
1176 dir-B dir-ancestor f ff)
1177 (list (setq f (ediff-read-file-name
1178 "File A to merge"
1179 dir-A
1180 (ediff-get-default-file-name)
1181 'no-dirs))
1182 (setq ff (ediff-read-file-name "File B to merge"
1183 (setq dir-B
1184 (if ediff-use-last-dir
1185 ediff-last-dir-B
1186 (file-name-directory f)))
1187 (progn
1188 (ediff-add-to-history
1189 'file-name-history
1190 (ediff-abbreviate-file-name
1191 (expand-file-name
1192 (file-name-nondirectory f)
1193 dir-B)))
1194 (ediff-get-default-file-name f 1))))
1195 (ediff-read-file-name "Ancestor file"
1196 (setq dir-ancestor
1197 (if ediff-use-last-dir
1198 ediff-last-dir-ancestor
1199 (file-name-directory ff)))
1200 (progn
1201 (ediff-add-to-history
1202 'file-name-history
1203 (ediff-abbreviate-file-name
1204 (expand-file-name
1205 (file-name-nondirectory ff)
1206 dir-ancestor)))
1207 (ediff-get-default-file-name ff 2)))
1209 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1210 (ediff-files-internal file-A
1211 (if (file-directory-p file-B)
1212 (expand-file-name
1213 (file-name-nondirectory file-A) file-B)
1214 file-B)
1215 file-ancestor
1216 startup-hooks
1217 'ediff-merge-files-with-ancestor
1218 merge-buffer-file))
1220 ;;;###autoload
1221 (defalias 'ediff-merge-with-ancestor 'ediff-merge-files-with-ancestor)
1223 ;;;###autoload
1224 (defun ediff-merge-buffers (buffer-A buffer-B
1225 &optional
1226 ;; MERGE-BUFFER-FILE is the file to be
1227 ;; associated with the merge buffer
1228 startup-hooks job-name merge-buffer-file)
1229 "Merge buffers without ancestor."
1230 (interactive
1231 (let (bf)
1232 (list (setq bf (read-buffer "Buffer A to merge: "
1233 (ediff-other-buffer "") t))
1234 (read-buffer "Buffer B to merge: "
1235 (progn
1236 ;; realign buffers so that two visible bufs will be
1237 ;; at the top
1238 (save-window-excursion (other-window 1))
1239 (ediff-other-buffer bf))
1240 t))))
1242 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1243 (or job-name (setq job-name 'ediff-merge-buffers))
1244 (ediff-buffers-internal
1245 buffer-A buffer-B nil startup-hooks job-name merge-buffer-file))
1247 ;;;###autoload
1248 (defun ediff-merge-buffers-with-ancestor (buffer-A buffer-B buffer-ancestor
1249 &optional
1250 startup-hooks
1251 job-name
1252 ;; MERGE-BUFFER-FILE is the
1253 ;; file to be associated
1254 ;; with the merge buffer
1255 merge-buffer-file)
1256 "Merge buffers with ancestor."
1257 (interactive
1258 (let (bf bff)
1259 (list (setq bf (read-buffer "Buffer A to merge: "
1260 (ediff-other-buffer "") t))
1261 (setq bff (read-buffer "Buffer B to merge: "
1262 (progn
1263 ;; realign buffers so that two visible
1264 ;; bufs will be at the top
1265 (save-window-excursion (other-window 1))
1266 (ediff-other-buffer bf))
1268 (read-buffer "Ancestor buffer: "
1269 (progn
1270 ;; realign buffers so that three visible
1271 ;; bufs will be at the top
1272 (save-window-excursion (other-window 1))
1273 (ediff-other-buffer (list bf bff)))
1277 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1278 (or job-name (setq job-name 'ediff-merge-buffers-with-ancestor))
1279 (ediff-buffers-internal
1280 buffer-A buffer-B buffer-ancestor startup-hooks job-name merge-buffer-file))
1283 ;;;###autoload
1284 (defun ediff-merge-revisions (&optional file startup-hooks merge-buffer-file)
1285 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
1286 "Run Ediff by merging two revisions of a file.
1287 The file is the optional FILE argument or the file visited by the current
1288 buffer."
1289 (interactive)
1290 (if (stringp file) (find-file file))
1291 (let (rev1 rev2)
1292 (setq rev1
1293 (read-string
1294 (format
1295 "Version 1 to merge (default %s's working version): "
1296 (if (stringp file)
1297 (file-name-nondirectory file) "current buffer")))
1298 rev2
1299 (read-string
1300 (format
1301 "Version 2 to merge (default %s): "
1302 (if (stringp file)
1303 (file-name-nondirectory file) "current buffer"))))
1304 (ediff-load-version-control)
1305 ;; ancestor-revision=nil
1306 (funcall
1307 (intern (format "ediff-%S-merge-internal" ediff-version-control-package))
1308 rev1 rev2 nil startup-hooks merge-buffer-file)))
1311 ;;;###autoload
1312 (defun ediff-merge-revisions-with-ancestor (&optional
1313 file startup-hooks
1314 ;; MERGE-BUFFER-FILE is the file to
1315 ;; be associated with the merge
1316 ;; buffer
1317 merge-buffer-file)
1318 "Run Ediff by merging two revisions of a file with a common ancestor.
1319 The file is the optional FILE argument or the file visited by the current
1320 buffer."
1321 (interactive)
1322 (if (stringp file) (find-file file))
1323 (let (rev1 rev2 ancestor-rev)
1324 (setq rev1
1325 (read-string
1326 (format
1327 "Version 1 to merge (default %s's working version): "
1328 (if (stringp file)
1329 (file-name-nondirectory file) "current buffer")))
1330 rev2
1331 (read-string
1332 (format
1333 "Version 2 to merge (default %s): "
1334 (if (stringp file)
1335 (file-name-nondirectory file) "current buffer")))
1336 ancestor-rev
1337 (read-string
1338 (format
1339 "Ancestor version (default %s's base revision): "
1340 (if (stringp file)
1341 (file-name-nondirectory file) "current buffer"))))
1342 (ediff-load-version-control)
1343 (funcall
1344 (intern (format "ediff-%S-merge-internal" ediff-version-control-package))
1345 rev1 rev2 ancestor-rev startup-hooks merge-buffer-file)))
1347 ;;; Apply patch
1349 ;;;###autoload
1350 (defun ediff-patch-file (&optional arg patch-buf)
1351 "Run Ediff by patching SOURCE-FILENAME.
1352 If optional PATCH-BUF is given, use the patch in that buffer
1353 and don't ask the user.
1354 If prefix argument, then: if even argument, assume that the patch is in a
1355 buffer. If odd -- assume it is in a file."
1356 (interactive "P")
1357 (let (source-dir source-file)
1358 (require 'ediff-ptch)
1359 (setq patch-buf
1360 (ediff-get-patch-buffer
1361 (if arg (prefix-numeric-value arg)) patch-buf))
1362 (setq source-dir (cond (ediff-use-last-dir ediff-last-dir-patch)
1363 ((and (not ediff-patch-default-directory)
1364 (buffer-file-name patch-buf))
1365 (file-name-directory
1366 (expand-file-name
1367 (buffer-file-name patch-buf))))
1368 (t default-directory)))
1369 (setq source-file
1370 (read-file-name
1371 "File to patch (directory, if multifile patch): "
1372 ;; use an explicit initial file
1373 source-dir nil nil (ediff-get-default-file-name)))
1374 (ediff-dispatch-file-patching-job patch-buf source-file)))
1376 ;;;###autoload
1377 (defun ediff-patch-buffer (&optional arg patch-buf)
1378 "Run Ediff by patching the buffer specified at prompt.
1379 Without the optional prefix ARG, asks if the patch is in some buffer and
1380 prompts for the buffer or a file, depending on the answer.
1381 With ARG=1, assumes the patch is in a file and prompts for the file.
1382 With ARG=2, assumes the patch is in a buffer and prompts for the buffer.
1383 PATCH-BUF is an optional argument, which specifies the buffer that contains the
1384 patch. If not given, the user is prompted according to the prefix argument."
1385 (interactive "P")
1386 (require 'ediff-ptch)
1387 (setq patch-buf
1388 (ediff-get-patch-buffer
1389 (if arg (prefix-numeric-value arg)) patch-buf))
1390 (ediff-patch-buffer-internal
1391 patch-buf
1392 (read-buffer
1393 "Which buffer to patch? "
1394 (ediff-other-buffer patch-buf))))
1397 ;;;###autoload
1398 (defalias 'epatch 'ediff-patch-file)
1399 ;;;###autoload
1400 (defalias 'epatch-buffer 'ediff-patch-buffer)
1405 ;;; Versions Control functions
1407 ;;;###autoload
1408 (defun ediff-revision (&optional file startup-hooks)
1409 "Run Ediff by comparing versions of a file.
1410 The file is an optional FILE argument or the file entered at the prompt.
1411 Default: the file visited by the current buffer.
1412 Uses `vc.el' or `rcs.el' depending on `ediff-version-control-package'."
1413 ;; if buffer is non-nil, use that buffer instead of the current buffer
1414 (interactive "P")
1415 (if (not (stringp file))
1416 (setq file
1417 (ediff-read-file-name "Compare revisions for file"
1418 (if ediff-use-last-dir
1419 ediff-last-dir-A
1420 default-directory)
1421 (ediff-get-default-file-name)
1422 'no-dirs)))
1423 (find-file file)
1424 (if (and (buffer-modified-p)
1425 (y-or-n-p (format "Buffer %s is modified. Save buffer? "
1426 (buffer-name))))
1427 (save-buffer (current-buffer)))
1428 (let (rev1 rev2)
1429 (setq rev1
1430 (read-string
1431 (format "Revision 1 to compare (default %s's latest revision): "
1432 (file-name-nondirectory file)))
1433 rev2
1434 (read-string
1435 (format "Revision 2 to compare (default %s's current state): "
1436 (file-name-nondirectory file))))
1437 (ediff-load-version-control)
1438 (funcall
1439 (intern (format "ediff-%S-internal" ediff-version-control-package))
1440 rev1 rev2 startup-hooks)
1444 ;;;###autoload
1445 (defalias 'erevision 'ediff-revision)
1448 ;; Test if version control package is loaded and load if not
1449 ;; Is SILENT is non-nil, don't report error if package is not found.
1450 (defun ediff-load-version-control (&optional silent)
1451 (require 'ediff-vers)
1452 (or (featurep ediff-version-control-package)
1453 (if (locate-library (symbol-name ediff-version-control-package))
1454 (progn
1455 (message "") ; kill the message from `locate-library'
1456 (require ediff-version-control-package))
1457 (or silent
1458 (error "Version control package %S.el not found. Use vc.el instead"
1459 ediff-version-control-package)))))
1462 ;;;###autoload
1463 (defun ediff-version ()
1464 "Return string describing the version of Ediff.
1465 When called interactively, displays the version."
1466 (interactive)
1467 ;; called-interactively-p - not in XEmacs
1468 ;; (if (called-interactively-p 'interactive)
1469 (if (interactive-p)
1470 (message "%s" (ediff-version))
1471 (format "Ediff %s of %s" ediff-version ediff-date)))
1473 ;; info is run first, and will autoload info.el.
1474 (declare-function Info-goto-node "info" (nodename &optional fork))
1476 ;;;###autoload
1477 (defun ediff-documentation (&optional node)
1478 "Display Ediff's manual.
1479 With optional NODE, goes to that node."
1480 (interactive)
1481 (let ((ctl-window ediff-control-window)
1482 (ctl-buf ediff-control-buffer))
1484 (ediff-skip-unsuitable-frames)
1485 (condition-case nil
1486 (progn
1487 (pop-to-buffer (get-buffer-create "*info*"))
1488 (info (if (featurep 'xemacs) "ediff.info" "ediff"))
1489 (if node
1490 (Info-goto-node node)
1491 (message "Type `i' to search for a specific topic"))
1492 (raise-frame (selected-frame)))
1493 (error (beep 1)
1494 (with-output-to-temp-buffer ediff-msg-buffer
1495 (ediff-with-current-buffer standard-output
1496 (fundamental-mode))
1497 (princ ediff-BAD-INFO))
1498 (if (window-live-p ctl-window)
1499 (progn
1500 (select-window ctl-window)
1501 (set-window-buffer ctl-window ctl-buf)))))))
1504 (dolist (mess '("^Errors in diff output. Diff output is in "
1505 "^Hmm... I don't see an Ediff command around here...$"
1506 "^Undocumented command! Type `G' in Ediff Control Panel to drop a note to the Ediff maintainer$"
1507 ": This command runs in Ediff Control Buffer only!$"
1508 ": Invalid op in ediff-check-version$"
1509 "^ediff-shrink-window-C can be used only for merging jobs$"
1510 "^Lost difference info on these directories$"
1511 "^This command is inapplicable in the present context$"
1512 "^This session group has no parent$"
1513 "^Can't hide active session, $"
1514 "^Ediff: something wrong--no multiple diffs buffer$"
1515 "^Can't make context diff for Session $"
1516 "^The patch buffer wasn't found$"
1517 "^Aborted$"
1518 "^This Ediff session is not part of a session group$"
1519 "^No active Ediff sessions or corrupted session registry$"
1520 "^No session info in this line$"
1521 "^`.*' is not an ordinary file$"
1522 "^Patch appears to have failed$"
1523 "^Recomputation of differences cancelled$"
1524 "^No fine differences in this mode$"
1525 "^Lost connection to ancestor buffer...sorry$"
1526 "^Not merging with ancestor$"
1527 "^Don't know how to toggle read-only in buffer "
1528 "Emacs is not running as a window application$"
1529 "^This command makes sense only when merging with an ancestor$"
1530 "^At end of the difference list$"
1531 "^At beginning of the difference list$"
1532 "^Nothing saved for diff .* in buffer "
1533 "^Buffer is out of sync for file "
1534 "^Buffer out of sync for file "
1535 "^Output from `diff' not found$"
1536 "^You forgot to specify a region in buffer "
1537 "^All right. Make up your mind and come back...$"
1538 "^Current buffer is not visiting any file$"
1539 "^Failed to retrieve revision: $"
1540 "^Can't determine display width.$"
1541 "^File `.*' does not exist or is not readable$"
1542 "^File `.*' is a directory$"
1543 "^Buffer .* doesn't exist$"
1544 "^Directories . and . are the same: "
1545 "^Directory merge aborted$"
1546 "^Merge of directory revisions aborted$"
1547 "^Buffer .* doesn't exist$"
1548 "^There is no file to merge$"
1549 "^Version control package .*.el not found. Use vc.el instead$"))
1550 (add-to-list 'debug-ignored-errors mess))
1553 (require 'ediff-util)
1555 (run-hooks 'ediff-load-hook)
1558 ;; Local Variables:
1559 ;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
1560 ;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1)
1561 ;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
1562 ;; End:
1564 ;; arch-tag: 97c71396-db02-4f41-8b48-6a51c3348fcc
1565 ;;; ediff.el ends here