(pid_t): Define to int.
[emacs.git] / lisp / ediff.el
blobbb6cfc6b72eb4d31c8f9b3d304ba65d2d3b32512
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 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 (defconst ediff-version "2.81" "The current version of Ediff")
11 (defconst ediff-date "February 18, 2006" "Date of last update")
14 ;; This file is part of GNU Emacs.
16 ;; GNU Emacs is free software; you can redistribute it and/or modify
17 ;; it under the terms of the GNU General Public License as published by
18 ;; the Free Software Foundation; either version 2, or (at your option)
19 ;; any later version.
21 ;; GNU Emacs is distributed in the hope that it will be useful,
22 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
23 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 ;; GNU General Public License for more details.
26 ;; You should have received a copy of the GNU General Public License
27 ;; along with GNU Emacs; see the file COPYING. If not, write to the
28 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
29 ;; Boston, MA 02110-1301, USA.
31 ;;; Commentary:
33 ;; Never read that diff output again!
34 ;; Apply patch interactively!
35 ;; Merge with ease!
37 ;; This package provides a convenient way of simultaneous browsing through
38 ;; the differences between a pair (or a triple) of files or buffers. The
39 ;; files being compared, file-A, file-B, and file-C (if applicable) are
40 ;; shown in separate windows (side by side, one above the another, or in
41 ;; separate frames), and the differences are highlighted as you step
42 ;; through them. You can also copy difference regions from one buffer to
43 ;; another (and recover old differences if you change your mind).
45 ;; Ediff also supports merging operations on files and buffers, including
46 ;; merging using ancestor versions. Both comparison and merging operations can
47 ;; be performed on directories, i.e., by pairwise comparison of files in those
48 ;; directories.
50 ;; In addition, Ediff can apply a patch to a file and then let you step
51 ;; though both files, the patched and the original one, simultaneously,
52 ;; difference-by-difference. You can even apply a patch right out of a
53 ;; mail buffer, i.e., patches received by mail don't even have to be saved.
54 ;; Since Ediff lets you copy differences between buffers, you can, in
55 ;; effect, apply patches selectively (i.e., you can copy a difference
56 ;; region from file_orig to file, thereby undoing any particular patch that
57 ;; you don't like).
59 ;; Ediff is aware of version control, which lets the user compare
60 ;; files with their older versions. Ediff can also work with remote and
61 ;; compressed files. Details are given below.
63 ;; Finally, Ediff supports directory-level comparison, merging and patching.
64 ;; See the on-line manual for details.
66 ;; This package builds upon the ideas borrowed from emerge.el and several
67 ;; Ediff's functions are adaptations from emerge.el. Much of the functionality
68 ;; Ediff provides is also influenced by emerge.el.
70 ;; The present version of Ediff supersedes Emerge. It provides a superior user
71 ;; interface and has numerous major features not found in Emerge. In
72 ;; particular, it can do patching, and 2-way and 3-way file comparison,
73 ;; merging, and directory operations.
77 ;;; Bugs:
79 ;; 1. The undo command doesn't restore deleted regions well. That is, if
80 ;; you delete all characters in a difference region and then invoke
81 ;; `undo', the reinstated text will most likely be inserted outside of
82 ;; what Ediff thinks is the current difference region. (This problem
83 ;; doesn't seem to exist with XEmacs.)
85 ;; If at any point you feel that difference regions are no longer correct,
86 ;; you can hit '!' to recompute the differences.
88 ;; 2. On a monochrome display, the repertoire of faces with which to
89 ;; highlight fine differences is limited. By default, Ediff is using
90 ;; underlining. However, if the region is already underlined by some other
91 ;; overlays, there is no simple way to temporarily remove that residual
92 ;; underlining. This problem occurs when a buffer is highlighted with
93 ;; hilit19.el or font-lock.el packages. If this residual highlighting gets
94 ;; in the way, you can do the following. Both font-lock.el and hilit19.el
95 ;; provide commands for unhighlighting buffers. You can either place these
96 ;; commands in `ediff-prepare-buffer-hook' (which will unhighlight every
97 ;; buffer used by Ediff) or you can execute them interactively, at any time
98 ;; and on any buffer.
101 ;;; Acknowledgements:
103 ;; Ediff was inspired by Dale R. Worley's <drw@math.mit.edu> emerge.el.
104 ;; Ediff would not have been possible without the help and encouragement of
105 ;; its many users. See Ediff on-line Info for the full list of those who
106 ;; helped. Improved defaults in Ediff file-name reading commands.
108 ;;; Code:
111 ;; Compiler pacifier
112 (defvar cvs-cookie-handle)
113 (defvar ediff-last-dir-patch)
114 (defvar ediff-patch-default-directory)
116 (and noninteractive
117 (eval-when-compile
118 (load-library "dired")
119 (load-library "info")
120 (load "pcl-cvs" 'noerror)))
121 (eval-when-compile
122 (let ((load-path (cons (expand-file-name ".") load-path)))
123 (provide 'ediff) ; to break recursive load cycle
124 (or (featurep 'ediff-init)
125 (load "ediff-init.el" nil nil 'nosuffix))
126 (or (featurep 'ediff-mult)
127 (load "ediff-mult.el" nil nil 'nosuffix))
128 (or (featurep 'ediff-ptch)
129 (load "ediff-ptch.el" nil nil 'nosuffix))
130 (or (featurep 'ediff-vers)
131 (load "ediff-vers.el" nil nil 'nosuffix))
133 ;; end pacifier
135 (require 'ediff-init)
136 (require 'ediff-mult) ; required because of the registry stuff
138 (defgroup ediff nil
139 "A comprehensive visual interface to diff & patch."
140 :tag "Ediff"
141 :group 'tools)
144 (defcustom ediff-use-last-dir nil
145 "*If t, Ediff will use previous directory as default when reading file name."
146 :type 'boolean
147 :group 'ediff)
149 ;; Last directory used by an Ediff command for file-A.
150 (defvar ediff-last-dir-A nil)
151 ;; Last directory used by an Ediff command for file-B.
152 (defvar ediff-last-dir-B nil)
153 ;; Last directory used by an Ediff command for file-C.
154 (defvar ediff-last-dir-C nil)
155 ;; Last directory used by an Ediff command for the ancestor file.
156 (defvar ediff-last-dir-ancestor nil)
157 ;; Last directory used by an Ediff command as the output directory for merge.
158 (defvar ediff-last-merge-autostore-dir nil)
161 ;; Used as a startup hook to set `_orig' patch file read-only.
162 (defun ediff-set-read-only-in-buf-A ()
163 (ediff-with-current-buffer ediff-buffer-A
164 (toggle-read-only 1)))
166 ;; Return a plausible default for ediff's first file:
167 ;; In dired, return the file number FILENO (or 0) in the list
168 ;; (all-selected-files, filename under the cursor), where directories are
169 ;; ignored. Otherwise, return DEFAULT file name, if non-nil. Else,
170 ;; if the buffer is visiting a file, return that file name.
171 (defun ediff-get-default-file-name (&optional default fileno)
172 (cond ((eq major-mode 'dired-mode)
173 (let ((current (dired-get-filename nil 'no-error))
174 (marked (condition-case nil
175 (dired-get-marked-files 'no-dir)
176 (error nil)))
177 aux-list choices result)
178 (or (integerp fileno) (setq fileno 0))
179 (if (stringp default)
180 (setq aux-list (cons default aux-list)))
181 (if (and (stringp current) (not (file-directory-p current)))
182 (setq aux-list (cons current aux-list)))
183 (setq choices (nconc marked aux-list))
184 (setq result (elt choices fileno))
185 (or result
186 default)))
187 ((stringp default) default)
188 ((buffer-file-name (current-buffer))
189 (file-name-nondirectory (buffer-file-name (current-buffer))))
192 ;;; Compare files/buffers
194 ;;;###autoload
195 (defun ediff-files (file-A file-B &optional startup-hooks)
196 "Run Ediff on a pair of files, FILE-A and FILE-B."
197 (interactive
198 (let ((dir-A (if ediff-use-last-dir
199 ediff-last-dir-A
200 default-directory))
201 dir-B f)
202 (list (setq f (ediff-read-file-name
203 "File A to compare"
204 dir-A
205 (ediff-get-default-file-name)
206 'no-dirs))
207 (ediff-read-file-name "File B to compare"
208 (setq dir-B
209 (if ediff-use-last-dir
210 ediff-last-dir-B
211 (file-name-directory f)))
212 (progn
213 (setq file-name-history
214 (cons (ediff-abbreviate-file-name
215 (expand-file-name
216 (file-name-nondirectory f)
217 dir-B))
218 file-name-history))
219 (ediff-get-default-file-name f 1)))
221 (ediff-files-internal file-A
222 (if (file-directory-p file-B)
223 (expand-file-name
224 (file-name-nondirectory file-A) file-B)
225 file-B)
226 nil ; file-C
227 startup-hooks
228 'ediff-files))
230 ;;;###autoload
231 (defun ediff-files3 (file-A file-B file-C &optional startup-hooks)
232 "Run Ediff on three files, FILE-A, FILE-B, and FILE-C."
233 (interactive
234 (let ((dir-A (if ediff-use-last-dir
235 ediff-last-dir-A
236 default-directory))
237 dir-B dir-C f ff)
238 (list (setq f (ediff-read-file-name
239 "File A to compare"
240 dir-A
241 (ediff-get-default-file-name)
242 'no-dirs))
243 (setq ff (ediff-read-file-name "File B to compare"
244 (setq dir-B
245 (if ediff-use-last-dir
246 ediff-last-dir-B
247 (file-name-directory f)))
248 (progn
249 (setq file-name-history
250 (cons
251 (ediff-abbreviate-file-name
252 (expand-file-name
253 (file-name-nondirectory f)
254 dir-B))
255 file-name-history))
256 (ediff-get-default-file-name f 1))))
257 (ediff-read-file-name "File C to compare"
258 (setq dir-C (if ediff-use-last-dir
259 ediff-last-dir-C
260 (file-name-directory ff)))
261 (progn
262 (setq file-name-history
263 (cons (ediff-abbreviate-file-name
264 (expand-file-name
265 (file-name-nondirectory ff)
266 dir-C))
267 file-name-history))
268 (ediff-get-default-file-name ff 2)))
270 (ediff-files-internal file-A
271 (if (file-directory-p file-B)
272 (expand-file-name
273 (file-name-nondirectory file-A) file-B)
274 file-B)
275 (if (file-directory-p file-C)
276 (expand-file-name
277 (file-name-nondirectory file-A) file-C)
278 file-C)
279 startup-hooks
280 'ediff-files3))
282 ;;;###autoload
283 (defalias 'ediff3 'ediff-files3)
286 ;; Visit FILE and arrange its buffer to Ediff's liking.
287 ;; FILE is actually a variable symbol that must contain a true file name.
288 ;; BUFFER-NAME is a variable symbol, which will get the buffer object into
289 ;; which FILE is read.
290 ;; LAST-DIR is the directory variable symbol where FILE's
291 ;; directory name should be returned. HOOKS-VAR is a variable symbol that will
292 ;; be assigned the hook to be executed after `ediff-startup' is finished.
293 ;; `ediff-find-file' arranges that the temp files it might create will be
294 ;; deleted.
295 (defun ediff-find-file (file-var buffer-name &optional last-dir hooks-var)
296 (let* ((file (symbol-value file-var))
297 (file-magic (ediff-filename-magic-p file))
298 (temp-file-name-prefix (file-name-nondirectory file)))
299 (cond ((not (file-readable-p file))
300 (error "File `%s' does not exist or is not readable" file))
301 ((file-directory-p file)
302 (error "File `%s' is a directory" file)))
304 ;; some of the commands, below, require full file name
305 (setq file (expand-file-name file))
307 ;; Record the directory of the file
308 (if last-dir
309 (set last-dir (expand-file-name (file-name-directory file))))
311 ;; Setup the buffer
312 (set buffer-name (find-file-noselect file))
314 (ediff-with-current-buffer (symbol-value buffer-name)
315 (widen) ; Make sure the entire file is seen
316 (cond (file-magic ; file has a handler, such as jka-compr-handler or
317 ;;; ange-ftp-hook-function--arrange for temp file
318 (ediff-verify-file-buffer 'magic)
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 ;; file processed via auto-mode-alist, a la uncompress.el
325 ((not (equal (file-truename file)
326 (file-truename (buffer-file-name))))
327 (setq file
328 (ediff-make-temp-file
329 (current-buffer) temp-file-name-prefix))
330 (set hooks-var (cons `(lambda () (delete-file ,file))
331 (symbol-value hooks-var))))
332 (t ;; plain file---just check that the file matches the buffer
333 (ediff-verify-file-buffer))))
334 (set file-var file)))
336 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
337 (defun ediff-files-internal (file-A file-B file-C startup-hooks job-name
338 &optional merge-buffer-file)
339 (let (buf-A buf-B buf-C)
340 (if (string= file-A file-B)
341 (error "Files A and B are the same"))
342 (if (stringp file-C)
343 (or (and (string= file-A file-C) (error "Files A and C are the same"))
344 (and (string= file-B file-C) (error "Files B and C are the same"))))
345 (message "Reading file %s ... " file-A)
346 ;;(sit-for 0)
347 (ediff-find-file 'file-A 'buf-A 'ediff-last-dir-A 'startup-hooks)
348 (message "Reading file %s ... " file-B)
349 ;;(sit-for 0)
350 (ediff-find-file 'file-B 'buf-B 'ediff-last-dir-B 'startup-hooks)
351 (if (stringp file-C)
352 (progn
353 (message "Reading file %s ... " file-C)
354 ;;(sit-for 0)
355 (ediff-find-file
356 'file-C 'buf-C
357 (if (eq job-name 'ediff-merge-files-with-ancestor)
358 'ediff-last-dir-ancestor 'ediff-last-dir-C)
359 'startup-hooks)))
360 (ediff-setup buf-A file-A
361 buf-B file-B
362 buf-C file-C
363 startup-hooks
364 (list (cons 'ediff-job-name job-name))
365 merge-buffer-file)))
368 ;;;###autoload
369 (defalias 'ediff 'ediff-files)
371 ;;;###autoload
372 (defun ediff-backup (file)
373 "Run Ediff on FILE and its backup file.
374 Uses the latest backup, if there are several numerical backups.
375 If this file is a backup, `ediff' it with its original."
376 (interactive (list (read-file-name "Ediff (file with backup): ")))
377 ;; The code is taken from `diff-backup'.
378 (require 'diff)
379 (let (bak ori)
380 (if (backup-file-name-p file)
381 (setq bak file
382 ori (file-name-sans-versions file))
383 (setq bak (or (diff-latest-backup-file file)
384 (error "No backup found for %s" file))
385 ori file))
386 (ediff-files bak ori)))
388 ;;;###autoload
389 (defun ediff-buffers (buffer-A buffer-B &optional startup-hooks job-name)
390 "Run Ediff on a pair of buffers, BUFFER-A and BUFFER-B."
391 (interactive
392 (let (bf)
393 (list (setq bf (read-buffer "Buffer A to compare: "
394 (ediff-other-buffer "") t))
395 (read-buffer "Buffer B to compare: "
396 (progn
397 ;; realign buffers so that two visible bufs will be
398 ;; at the top
399 (save-window-excursion (other-window 1))
400 (ediff-other-buffer bf))
401 t))))
402 (or job-name (setq job-name 'ediff-buffers))
403 (ediff-buffers-internal buffer-A buffer-B nil startup-hooks job-name))
405 ;;;###autoload
406 (defalias 'ebuffers 'ediff-buffers)
409 ;;;###autoload
410 (defun ediff-buffers3 (buffer-A buffer-B buffer-C
411 &optional startup-hooks job-name)
412 "Run Ediff on three buffers, BUFFER-A, BUFFER-B, and BUFFER-C."
413 (interactive
414 (let (bf bff)
415 (list (setq bf (read-buffer "Buffer A to compare: "
416 (ediff-other-buffer "") t))
417 (setq bff (read-buffer "Buffer B to compare: "
418 (progn
419 ;; realign buffers so that two visible
420 ;; bufs will be at the top
421 (save-window-excursion (other-window 1))
422 (ediff-other-buffer bf))
424 (read-buffer "Buffer C to compare: "
425 (progn
426 ;; realign buffers so that three visible
427 ;; bufs will be at the top
428 (save-window-excursion (other-window 1))
429 (ediff-other-buffer (list bf bff)))
432 (or job-name (setq job-name 'ediff-buffers3))
433 (ediff-buffers-internal buffer-A buffer-B buffer-C startup-hooks job-name))
435 ;;;###autoload
436 (defalias 'ebuffers3 'ediff-buffers3)
440 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
441 (defun ediff-buffers-internal (buf-A buf-B buf-C startup-hooks job-name
442 &optional merge-buffer-file)
443 (let* ((buf-A-file-name (buffer-file-name (get-buffer buf-A)))
444 (buf-B-file-name (buffer-file-name (get-buffer buf-B)))
445 (buf-C-is-alive (ediff-buffer-live-p buf-C))
446 (buf-C-file-name (if buf-C-is-alive
447 (buffer-file-name (get-buffer buf-B))))
448 file-A file-B file-C)
449 (if (not (ediff-buffer-live-p buf-A))
450 (error "Buffer %S doesn't exist" buf-A))
451 (if (not (ediff-buffer-live-p buf-B))
452 (error "Buffer %S doesn't exist" buf-B))
453 (let ((ediff-job-name job-name))
454 (if (and ediff-3way-comparison-job
455 (not buf-C-is-alive))
456 (error "Buffer %S doesn't exist" buf-C)))
457 (if (stringp buf-A-file-name)
458 (setq buf-A-file-name (file-name-nondirectory buf-A-file-name)))
459 (if (stringp buf-B-file-name)
460 (setq buf-B-file-name (file-name-nondirectory buf-B-file-name)))
461 (if (stringp buf-C-file-name)
462 (setq buf-C-file-name (file-name-nondirectory buf-C-file-name)))
464 (setq file-A (ediff-make-temp-file buf-A buf-A-file-name)
465 file-B (ediff-make-temp-file buf-B buf-B-file-name))
466 (if buf-C-is-alive
467 (setq file-C (ediff-make-temp-file buf-C buf-C-file-name)))
469 (ediff-setup (get-buffer buf-A) file-A
470 (get-buffer buf-B) file-B
471 (if buf-C-is-alive (get-buffer buf-C))
472 file-C
473 (cons `(lambda ()
474 (delete-file ,file-A)
475 (delete-file ,file-B)
476 (if (stringp ,file-C) (delete-file ,file-C)))
477 startup-hooks)
478 (list (cons 'ediff-job-name job-name))
479 merge-buffer-file)))
482 ;;; Directory and file group operations
484 ;; Get appropriate default name for directory:
485 ;; If ediff-use-last-dir, use ediff-last-dir-A.
486 ;; In dired mode, use the directory that is under the point (if any);
487 ;; otherwise, use default-directory
488 (defun ediff-get-default-directory-name ()
489 (cond (ediff-use-last-dir ediff-last-dir-A)
490 ((eq major-mode 'dired-mode)
491 (let ((f (dired-get-filename nil 'noerror)))
492 (if (and (stringp f) (file-directory-p f))
494 default-directory)))
495 (t default-directory)))
498 ;;;###autoload
499 (defun ediff-directories (dir1 dir2 regexp)
500 "Run Ediff on a pair of directories, DIR1 and DIR2, comparing files that have
501 the same name in both. The third argument, REGEXP, is nil or a regular
502 expression; only file names that match the regexp are considered."
503 (interactive
504 (let ((dir-A (ediff-get-default-directory-name))
505 (default-regexp (eval ediff-default-filtering-regexp))
507 (list (setq f (ediff-read-file-name "Directory A to compare:" dir-A nil))
508 (ediff-read-file-name "Directory B to compare:"
509 (if ediff-use-last-dir
510 ediff-last-dir-B
511 (ediff-strip-last-dir f))
512 nil)
513 (read-string
514 (if (stringp default-regexp)
515 (format "Filter through regular expression (default %s): "
516 default-regexp)
517 "Filter through regular expression: ")
519 'ediff-filtering-regexp-history
520 (eval ediff-default-filtering-regexp))
522 (ediff-directories-internal
523 dir1 dir2 nil regexp 'ediff-files 'ediff-directories
526 ;;;###autoload
527 (defalias 'edirs 'ediff-directories)
530 ;;;###autoload
531 (defun ediff-directory-revisions (dir1 regexp)
532 "Run Ediff on a directory, DIR1, comparing its files with their revisions.
533 The second argument, REGEXP, is a regular expression that filters the file
534 names. Only the files that are under revision control are taken into account."
535 (interactive
536 (let ((dir-A (ediff-get-default-directory-name))
537 (default-regexp (eval ediff-default-filtering-regexp))
539 (list (ediff-read-file-name
540 "Directory to compare with revision:" dir-A nil)
541 (read-string
542 (if (stringp default-regexp)
543 (format "Filter through regular expression (default %s): "
544 default-regexp)
545 "Filter through regular expression: ")
547 'ediff-filtering-regexp-history
548 (eval ediff-default-filtering-regexp))
550 (ediff-directory-revisions-internal
551 dir1 regexp 'ediff-revision 'ediff-directory-revisions
554 ;;;###autoload
555 (defalias 'edir-revisions 'ediff-directory-revisions)
558 ;;;###autoload
559 (defun ediff-directories3 (dir1 dir2 dir3 regexp)
560 "Run Ediff on three directories, DIR1, DIR2, and DIR3, comparing files that
561 have the same name in all three. The last argument, REGEXP, is nil or a
562 regular expression; only file names that match the regexp are considered."
564 (interactive
565 (let ((dir-A (ediff-get-default-directory-name))
566 (default-regexp (eval ediff-default-filtering-regexp))
568 (list (setq f (ediff-read-file-name "Directory A to compare:" dir-A nil))
569 (setq f (ediff-read-file-name "Directory B to compare:"
570 (if ediff-use-last-dir
571 ediff-last-dir-B
572 (ediff-strip-last-dir f))
573 nil))
574 (ediff-read-file-name "Directory C to compare:"
575 (if ediff-use-last-dir
576 ediff-last-dir-C
577 (ediff-strip-last-dir f))
578 nil)
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-directories-internal
589 dir1 dir2 dir3 regexp 'ediff-files3 'ediff-directories3
592 ;;;###autoload
593 (defalias 'edirs3 'ediff-directories3)
595 ;;;###autoload
596 (defun ediff-merge-directories (dir1 dir2 regexp &optional merge-autostore-dir)
597 "Run Ediff on a pair of directories, DIR1 and DIR2, merging files that have
598 the same name in both. The third argument, REGEXP, is nil or a regular
599 expression; only file names that match the regexp are considered."
600 (interactive
601 (let ((dir-A (ediff-get-default-directory-name))
602 (default-regexp (eval ediff-default-filtering-regexp))
604 (list (setq f (ediff-read-file-name "Directory A to merge:" dir-A nil))
605 (ediff-read-file-name "Directory B to merge:"
606 (if ediff-use-last-dir
607 ediff-last-dir-B
608 (ediff-strip-last-dir f))
609 nil)
610 (read-string
611 (if (stringp default-regexp)
612 (format "Filter through regular expression (default %s): "
613 default-regexp)
614 "Filter through regular expression: ")
616 'ediff-filtering-regexp-history
617 (eval ediff-default-filtering-regexp))
619 (ediff-directories-internal
620 dir1 dir2 nil regexp 'ediff-merge-files 'ediff-merge-directories
621 nil merge-autostore-dir
624 ;;;###autoload
625 (defalias 'edirs-merge 'ediff-merge-directories)
627 ;;;###autoload
628 (defun ediff-merge-directories-with-ancestor (dir1 dir2 ancestor-dir regexp
629 &optional
630 merge-autostore-dir)
631 "Merge files in directories DIR1 and DIR2 using files in ANCESTOR-DIR as ancestors.
632 Ediff merges files that have identical names in DIR1, DIR2. If a pair of files
633 in DIR1 and DIR2 doesn't have an ancestor in ANCESTOR-DIR, Ediff will merge
634 without ancestor. The fourth argument, REGEXP, is nil or a regular expression;
635 only file names that match the regexp are considered."
636 (interactive
637 (let ((dir-A (ediff-get-default-directory-name))
638 (default-regexp (eval ediff-default-filtering-regexp))
640 (list (setq f (ediff-read-file-name "Directory A to merge:" dir-A nil))
641 (setq f (ediff-read-file-name "Directory B to merge:"
642 (if ediff-use-last-dir
643 ediff-last-dir-B
644 (ediff-strip-last-dir f))
645 nil))
646 (ediff-read-file-name "Ancestor directory:"
647 (if ediff-use-last-dir
648 ediff-last-dir-C
649 (ediff-strip-last-dir f))
650 nil)
651 (read-string
652 (if (stringp default-regexp)
653 (format "Filter through regular expression (default %s): "
654 default-regexp)
655 "Filter through regular expression: ")
657 'ediff-filtering-regexp-history
658 (eval ediff-default-filtering-regexp))
660 (ediff-directories-internal
661 dir1 dir2 ancestor-dir regexp
662 'ediff-merge-files-with-ancestor 'ediff-merge-directories-with-ancestor
663 nil merge-autostore-dir
666 ;;;###autoload
667 (defun ediff-merge-directory-revisions (dir1 regexp
668 &optional merge-autostore-dir)
669 "Run Ediff on a directory, DIR1, merging its files with their revisions.
670 The second argument, REGEXP, is a regular expression that filters the file
671 names. Only the files that are under revision control are taken into account."
672 (interactive
673 (let ((dir-A (ediff-get-default-directory-name))
674 (default-regexp (eval ediff-default-filtering-regexp))
676 (list (ediff-read-file-name
677 "Directory to merge with revisions:" dir-A nil)
678 (read-string
679 (if (stringp default-regexp)
680 (format "Filter through regular expression (default %s): "
681 default-regexp)
682 "Filter through regular expression: ")
684 'ediff-filtering-regexp-history
685 (eval ediff-default-filtering-regexp))
687 (ediff-directory-revisions-internal
688 dir1 regexp 'ediff-merge-revisions 'ediff-merge-directory-revisions
689 nil merge-autostore-dir
692 ;;;###autoload
693 (defalias 'edir-merge-revisions 'ediff-merge-directory-revisions)
695 ;;;###autoload
696 (defun ediff-merge-directory-revisions-with-ancestor (dir1 regexp
697 &optional
698 merge-autostore-dir)
699 "Run Ediff on a directory, DIR1, merging its files with their revisions and ancestors.
700 The second argument, REGEXP, is a regular expression that filters the file
701 names. Only the files that are under revision control are taken into account."
702 (interactive
703 (let ((dir-A (ediff-get-default-directory-name))
704 (default-regexp (eval ediff-default-filtering-regexp))
706 (list (ediff-read-file-name
707 "Directory to merge with revisions and ancestors:" dir-A nil)
708 (read-string
709 (if (stringp default-regexp)
710 (format "Filter through regular expression (default %s): "
711 default-regexp)
712 "Filter through regular expression: ")
714 'ediff-filtering-regexp-history
715 (eval ediff-default-filtering-regexp))
717 (ediff-directory-revisions-internal
718 dir1 regexp 'ediff-merge-revisions-with-ancestor
719 'ediff-merge-directory-revisions-with-ancestor
720 nil merge-autostore-dir
723 ;;;###autoload
724 (defalias
725 'edir-merge-revisions-with-ancestor
726 'ediff-merge-directory-revisions-with-ancestor)
728 ;;;###autoload
729 (defalias 'edirs-merge-with-ancestor 'ediff-merge-directories-with-ancestor)
731 ;; Run ediff-action (ediff-files, ediff-merge, ediff-merge-with-ancestors)
732 ;; on a pair of directories (three directories, in case of ancestor).
733 ;; The third argument, REGEXP, is nil or a regular expression;
734 ;; only file names that match the regexp are considered.
735 ;; JOBNAME is the symbol indicating the meta-job to be performed.
736 ;; MERGE-AUTOSTORE-DIR is the directory in which to store merged files.
737 (defun ediff-directories-internal (dir1 dir2 dir3 regexp action jobname
738 &optional startup-hooks
739 merge-autostore-dir)
740 ;; ediff-read-file-name is set to attach a previously entered file name if
741 ;; the currently entered file is a directory. This code takes care of that.
742 (setq dir1 (if (file-directory-p dir1) dir1 (file-name-directory dir1))
743 dir2 (if (file-directory-p dir2) dir2 (file-name-directory dir2)))
745 (if (stringp dir3)
746 (setq dir3 (if (file-directory-p dir3) dir3 (file-name-directory dir3))))
748 (cond ((string= dir1 dir2)
749 (error "Directories A and B are the same: %s" dir1))
750 ((and (eq jobname 'ediff-directories3)
751 (string= dir1 dir3))
752 (error "Directories A and C are the same: %s" dir1))
753 ((and (eq jobname 'ediff-directories3)
754 (string= dir2 dir3))
755 (error "Directories B and C are the same: %s" dir1)))
757 (if merge-autostore-dir
758 (or (stringp merge-autostore-dir)
759 (error "%s: Directory for storing merged files must be a string"
760 jobname)))
761 (let (;; dir-diff-struct is of the form (common-list diff-list)
762 ;; It is a structure where ediff-intersect-directories returns
763 ;; commonalities and differences among directories
764 dir-diff-struct
765 meta-buf)
766 (if (and ediff-autostore-merges
767 (ediff-merge-metajob jobname)
768 (not merge-autostore-dir))
769 (setq merge-autostore-dir
770 (read-file-name "Save merged files in directory: "
771 (if ediff-use-last-dir
772 ediff-last-merge-autostore-dir
773 (ediff-strip-last-dir dir1))
775 'must-match)))
776 ;; verify we are not merging into an orig directory
777 (if merge-autostore-dir
778 (cond ((and (stringp dir1) (string= merge-autostore-dir dir1))
779 (or (y-or-n-p
780 "Directory for saving merged files = Directory A. Sure? ")
781 (error "Directory merge aborted")))
782 ((and (stringp dir2) (string= merge-autostore-dir dir2))
783 (or (y-or-n-p
784 "Directory for saving merged files = Directory B. Sure? ")
785 (error "Directory merge aborted")))
786 ((and (stringp dir3) (string= merge-autostore-dir dir3))
787 (or (y-or-n-p
788 "Directory for saving merged files = Ancestor Directory. Sure? ")
789 (error "Directory merge aborted")))))
791 (setq dir-diff-struct (ediff-intersect-directories
792 jobname
793 regexp dir1 dir2 dir3 merge-autostore-dir))
794 (setq startup-hooks
795 ;; this sets various vars in the meta buffer inside
796 ;; ediff-prepare-meta-buffer
797 (cons `(lambda ()
798 ;; tell what to do if the user clicks on a session record
799 (setq ediff-session-action-function (quote ,action))
800 ;; set ediff-dir-difference-list
801 (setq ediff-dir-difference-list
802 (cdr (quote ,dir-diff-struct))))
803 startup-hooks))
804 (setq meta-buf (ediff-prepare-meta-buffer
805 'ediff-filegroup-action
806 (car dir-diff-struct)
807 "*Ediff Session Group Panel"
808 'ediff-redraw-directory-group-buffer
809 jobname
810 startup-hooks))
811 (ediff-show-meta-buffer meta-buf)
814 ;; MERGE-AUTOSTORE-DIR can be given to tell ediff where to store the merged
815 ;; files
816 (defun ediff-directory-revisions-internal (dir1 regexp action jobname
817 &optional startup-hooks
818 merge-autostore-dir)
819 (setq dir1 (if (file-directory-p dir1) dir1 (file-name-directory dir1)))
821 (if merge-autostore-dir
822 (or (stringp merge-autostore-dir)
823 (error "%S: Directory for storing merged files must be a string"
824 jobname)))
825 (let (file-list meta-buf)
826 (if (and ediff-autostore-merges
827 (ediff-merge-metajob jobname)
828 (not merge-autostore-dir))
829 (setq merge-autostore-dir
830 (read-file-name "Save merged files in directory: "
831 (if ediff-use-last-dir
832 ediff-last-merge-autostore-dir
833 (ediff-strip-last-dir dir1))
835 'must-match)))
836 ;; verify merge-autostore-dir != dir1
837 (if (and merge-autostore-dir
838 (stringp dir1)
839 (string= merge-autostore-dir dir1))
840 (or (y-or-n-p
841 "Directory for saving merged file = directory A. Sure? ")
842 (error "Merge of directory revisions aborted")))
844 (setq file-list
845 (ediff-get-directory-files-under-revision
846 jobname regexp dir1 merge-autostore-dir))
847 (setq startup-hooks
848 ;; this sets various vars in the meta buffer inside
849 ;; ediff-prepare-meta-buffer
850 (cons `(lambda ()
851 ;; tell what to do if the user clicks on a session record
852 (setq ediff-session-action-function (quote ,action)))
853 startup-hooks))
854 (setq meta-buf (ediff-prepare-meta-buffer
855 'ediff-filegroup-action
856 file-list
857 "*Ediff Session Group Panel"
858 'ediff-redraw-directory-group-buffer
859 jobname
860 startup-hooks))
861 (ediff-show-meta-buffer meta-buf)
865 ;;; Compare regions and windows
867 ;;;###autoload
868 (defun ediff-windows-wordwise (dumb-mode &optional wind-A wind-B startup-hooks)
869 "Compare WIND-A and WIND-B, which are selected by clicking, wordwise.
870 With prefix argument, DUMB-MODE, or on a non-windowing display, works as
871 follows:
872 If WIND-A is nil, use selected window.
873 If WIND-B is nil, use window next to WIND-A."
874 (interactive "P")
875 (ediff-windows dumb-mode wind-A wind-B
876 startup-hooks 'ediff-windows-wordwise 'word-mode))
878 ;;;###autoload
879 (defun ediff-windows-linewise (dumb-mode &optional wind-A wind-B startup-hooks)
880 "Compare WIND-A and WIND-B, which are selected by clicking, linewise.
881 With prefix argument, DUMB-MODE, or on a non-windowing display, works as
882 follows:
883 If WIND-A is nil, use selected window.
884 If WIND-B is nil, use window next to WIND-A."
885 (interactive "P")
886 (ediff-windows dumb-mode wind-A wind-B
887 startup-hooks 'ediff-windows-linewise nil))
889 ;; Compare WIND-A and WIND-B, which are selected by clicking.
890 ;; With prefix argument, DUMB-MODE, or on a non-windowing display,
891 ;; works as follows:
892 ;; If WIND-A is nil, use selected window.
893 ;; If WIND-B is nil, use window next to WIND-A.
894 (defun ediff-windows (dumb-mode wind-A wind-B startup-hooks job-name word-mode)
895 (if (or dumb-mode (not (ediff-window-display-p)))
896 (setq wind-A (ediff-get-next-window wind-A nil)
897 wind-B (ediff-get-next-window wind-B wind-A))
898 (setq wind-A (ediff-get-window-by-clicking wind-A nil 1)
899 wind-B (ediff-get-window-by-clicking wind-B wind-A 2)))
901 (let ((buffer-A (window-buffer wind-A))
902 (buffer-B (window-buffer wind-B))
903 beg-A end-A beg-B end-B)
905 (save-excursion
906 (save-window-excursion
907 (sit-for 0) ; sync before using window-start/end -- a precaution
908 (select-window wind-A)
909 (setq beg-A (window-start)
910 end-A (window-end))
911 (select-window wind-B)
912 (setq beg-B (window-start)
913 end-B (window-end))))
914 (setq buffer-A
915 (ediff-clone-buffer-for-window-comparison
916 buffer-A wind-A "-Window.A-")
917 buffer-B
918 (ediff-clone-buffer-for-window-comparison
919 buffer-B wind-B "-Window.B-"))
920 (ediff-regions-internal
921 buffer-A beg-A end-A buffer-B beg-B end-B
922 startup-hooks job-name word-mode nil)))
925 ;;;###autoload
926 (defun ediff-regions-wordwise (buffer-A buffer-B &optional startup-hooks)
927 "Run Ediff on a pair of regions in specified buffers.
928 Regions \(i.e., point and mark\) are assumed to be set in advance except
929 for the second region in the case both regions are from the same buffer.
930 In such a case the user is asked to interactively establish the second
931 region.
932 This function is effective only for relatively small regions, up to 200
933 lines. For large regions, use `ediff-regions-linewise'."
934 (interactive
935 (let (bf)
936 (list (setq bf (read-buffer "Region's A buffer: "
937 (ediff-other-buffer "") t))
938 (read-buffer "Region's B buffer: "
939 (progn
940 ;; realign buffers so that two visible bufs will be
941 ;; at the top
942 (save-window-excursion (other-window 1))
943 (ediff-other-buffer bf))
944 t))))
945 (if (not (ediff-buffer-live-p buffer-A))
946 (error "Buffer %S doesn't exist" buffer-A))
947 (if (not (ediff-buffer-live-p buffer-B))
948 (error "Buffer %S doesn't exist" buffer-B))
951 (let ((buffer-A
952 (ediff-clone-buffer-for-region-comparison buffer-A "-Region.A-"))
953 (buffer-B
954 (ediff-clone-buffer-for-region-comparison buffer-B "-Region.B-"))
955 reg-A-beg reg-A-end reg-B-beg reg-B-end)
956 (save-excursion
957 (set-buffer buffer-A)
958 (setq reg-A-beg (region-beginning)
959 reg-A-end (region-end))
960 (set-buffer buffer-B)
961 (setq reg-B-beg (region-beginning)
962 reg-B-end (region-end)))
964 (ediff-regions-internal
965 (get-buffer buffer-A) reg-A-beg reg-A-end
966 (get-buffer buffer-B) reg-B-beg reg-B-end
967 startup-hooks 'ediff-regions-wordwise 'word-mode nil)))
969 ;;;###autoload
970 (defun ediff-regions-linewise (buffer-A buffer-B &optional startup-hooks)
971 "Run Ediff on a pair of regions in specified buffers.
972 Regions \(i.e., point and mark\) are assumed to be set in advance except
973 for the second region in the case both regions are from the same buffer.
974 In such a case the user is asked to interactively establish the second
975 region.
976 Each region is enlarged to contain full lines.
977 This function is effective for large regions, over 100-200
978 lines. For small regions, use `ediff-regions-wordwise'."
979 (interactive
980 (let (bf)
981 (list (setq bf (read-buffer "Region A's buffer: "
982 (ediff-other-buffer "") t))
983 (read-buffer "Region B's buffer: "
984 (progn
985 ;; realign buffers so that two visible bufs will be
986 ;; at the top
987 (save-window-excursion (other-window 1))
988 (ediff-other-buffer bf))
989 t))))
990 (if (not (ediff-buffer-live-p buffer-A))
991 (error "Buffer %S doesn't exist" buffer-A))
992 (if (not (ediff-buffer-live-p buffer-B))
993 (error "Buffer %S doesn't exist" buffer-B))
995 (let ((buffer-A
996 (ediff-clone-buffer-for-region-comparison buffer-A "-Region.A-"))
997 (buffer-B
998 (ediff-clone-buffer-for-region-comparison buffer-B "-Region.B-"))
999 reg-A-beg reg-A-end reg-B-beg reg-B-end)
1000 (save-excursion
1001 (set-buffer buffer-A)
1002 (setq reg-A-beg (region-beginning)
1003 reg-A-end (region-end))
1004 ;; enlarge the region to hold full lines
1005 (goto-char reg-A-beg)
1006 (beginning-of-line)
1007 (setq reg-A-beg (point))
1008 (goto-char reg-A-end)
1009 (end-of-line)
1010 (or (eobp) (forward-char)) ; include the newline char
1011 (setq reg-A-end (point))
1013 (set-buffer buffer-B)
1014 (setq reg-B-beg (region-beginning)
1015 reg-B-end (region-end))
1016 ;; enlarge the region to hold full lines
1017 (goto-char reg-B-beg)
1018 (beginning-of-line)
1019 (setq reg-B-beg (point))
1020 (goto-char reg-B-end)
1021 (end-of-line)
1022 (or (eobp) (forward-char)) ; include the newline char
1023 (setq reg-B-end (point))
1024 ) ; save excursion
1026 (ediff-regions-internal
1027 (get-buffer buffer-A) reg-A-beg reg-A-end
1028 (get-buffer buffer-B) reg-B-beg reg-B-end
1029 startup-hooks 'ediff-regions-linewise nil nil))) ; no word mode
1031 ;; compare region beg-A to end-A of buffer-A
1032 ;; to regions beg-B -- end-B in buffer-B.
1033 (defun ediff-regions-internal (buffer-A beg-A end-A buffer-B beg-B end-B
1034 startup-hooks job-name word-mode
1035 setup-parameters)
1036 (let ((tmp-buffer (get-buffer-create ediff-tmp-buffer))
1037 overl-A overl-B
1038 file-A file-B)
1040 ;; in case beg/end-A/B aren't markers--make them into markers
1041 (ediff-with-current-buffer buffer-A
1042 (setq beg-A (move-marker (make-marker) beg-A)
1043 end-A (move-marker (make-marker) end-A)))
1044 (ediff-with-current-buffer buffer-B
1045 (setq beg-B (move-marker (make-marker) beg-B)
1046 end-B (move-marker (make-marker) end-B)))
1048 ;; make file-A
1049 (if word-mode
1050 (ediff-wordify beg-A end-A buffer-A tmp-buffer)
1051 (ediff-copy-to-buffer beg-A end-A buffer-A tmp-buffer))
1052 (setq file-A (ediff-make-temp-file tmp-buffer "regA"))
1054 ;; make file-B
1055 (if word-mode
1056 (ediff-wordify beg-B end-B buffer-B tmp-buffer)
1057 (ediff-copy-to-buffer beg-B end-B buffer-B tmp-buffer))
1058 (setq file-B (ediff-make-temp-file tmp-buffer "regB"))
1060 (setq overl-A (ediff-make-bullet-proof-overlay beg-A end-A buffer-A))
1061 (setq overl-B (ediff-make-bullet-proof-overlay beg-B end-B buffer-B))
1062 (ediff-setup buffer-A file-A
1063 buffer-B file-B
1064 nil nil ; buffer & file C
1065 (cons `(lambda ()
1066 (delete-file ,file-A)
1067 (delete-file ,file-B))
1068 startup-hooks)
1069 (append
1070 (list (cons 'ediff-word-mode word-mode)
1071 (cons 'ediff-narrow-bounds (list overl-A overl-B))
1072 (cons 'ediff-job-name job-name))
1073 setup-parameters))
1077 ;;; Merge files and buffers
1079 ;;;###autoload
1080 (defalias 'ediff-merge 'ediff-merge-files)
1082 (defsubst ediff-merge-on-startup ()
1083 (ediff-do-merge 0)
1084 ;; Can't remember why this is here, but it may cause the automatically merged
1085 ;; buffer to be lost. So, keep the buffer modified.
1086 ;;(ediff-with-current-buffer ediff-buffer-C
1087 ;; (set-buffer-modified-p nil))
1090 ;;;###autoload
1091 (defun ediff-merge-files (file-A file-B
1092 ;; MERGE-BUFFER-FILE is the file to be
1093 ;; associated with the merge buffer
1094 &optional startup-hooks merge-buffer-file)
1095 "Merge two files without ancestor."
1096 (interactive
1097 (let ((dir-A (if ediff-use-last-dir
1098 ediff-last-dir-A
1099 default-directory))
1100 dir-B f)
1101 (list (setq f (ediff-read-file-name
1102 "File A to merge"
1103 dir-A
1104 (ediff-get-default-file-name)
1105 'no-dirs))
1106 (ediff-read-file-name "File B to merge"
1107 (setq dir-B
1108 (if ediff-use-last-dir
1109 ediff-last-dir-B
1110 (file-name-directory f)))
1111 (progn
1112 (setq file-name-history
1113 (cons (ediff-abbreviate-file-name
1114 (expand-file-name
1115 (file-name-nondirectory f)
1116 dir-B))
1117 file-name-history))
1118 (ediff-get-default-file-name f 1)))
1120 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1121 (ediff-files-internal file-A
1122 (if (file-directory-p file-B)
1123 (expand-file-name
1124 (file-name-nondirectory file-A) file-B)
1125 file-B)
1126 nil ; file-C
1127 startup-hooks
1128 'ediff-merge-files
1129 merge-buffer-file))
1131 ;;;###autoload
1132 (defun ediff-merge-files-with-ancestor (file-A file-B file-ancestor
1133 &optional
1134 startup-hooks
1135 ;; MERGE-BUFFER-FILE is the file
1136 ;; to be associated with the
1137 ;; merge buffer
1138 merge-buffer-file)
1139 "Merge two files with ancestor."
1140 (interactive
1141 (let ((dir-A (if ediff-use-last-dir
1142 ediff-last-dir-A
1143 default-directory))
1144 dir-B dir-ancestor f ff)
1145 (list (setq f (ediff-read-file-name
1146 "File A to merge"
1147 dir-A
1148 (ediff-get-default-file-name)
1149 'no-dirs))
1150 (setq ff (ediff-read-file-name "File B to merge"
1151 (setq dir-B
1152 (if ediff-use-last-dir
1153 ediff-last-dir-B
1154 (file-name-directory f)))
1155 (progn
1156 (setq file-name-history
1157 (cons
1158 (ediff-abbreviate-file-name
1159 (expand-file-name
1160 (file-name-nondirectory f)
1161 dir-B))
1162 file-name-history))
1163 (ediff-get-default-file-name f 1))))
1164 (ediff-read-file-name "Ancestor file"
1165 (setq dir-ancestor
1166 (if ediff-use-last-dir
1167 ediff-last-dir-ancestor
1168 (file-name-directory ff)))
1169 (progn
1170 (setq file-name-history
1171 (cons (ediff-abbreviate-file-name
1172 (expand-file-name
1173 (file-name-nondirectory ff)
1174 dir-ancestor))
1175 file-name-history))
1176 (ediff-get-default-file-name ff 2)))
1178 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1179 (ediff-files-internal file-A
1180 (if (file-directory-p file-B)
1181 (expand-file-name
1182 (file-name-nondirectory file-A) file-B)
1183 file-B)
1184 file-ancestor
1185 startup-hooks
1186 'ediff-merge-files-with-ancestor
1187 merge-buffer-file))
1189 ;;;###autoload
1190 (defalias 'ediff-merge-with-ancestor 'ediff-merge-files-with-ancestor)
1192 ;;;###autoload
1193 (defun ediff-merge-buffers (buffer-A buffer-B
1194 &optional
1195 ;; MERGE-BUFFER-FILE is the file to be
1196 ;; associated with the merge buffer
1197 startup-hooks job-name merge-buffer-file)
1198 "Merge buffers without ancestor."
1199 (interactive
1200 (let (bf)
1201 (list (setq bf (read-buffer "Buffer A to merge: "
1202 (ediff-other-buffer "") t))
1203 (read-buffer "Buffer B to merge: "
1204 (progn
1205 ;; realign buffers so that two visible bufs will be
1206 ;; at the top
1207 (save-window-excursion (other-window 1))
1208 (ediff-other-buffer bf))
1209 t))))
1211 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1212 (or job-name (setq job-name 'ediff-merge-buffers))
1213 (ediff-buffers-internal
1214 buffer-A buffer-B nil startup-hooks job-name merge-buffer-file))
1216 ;;;###autoload
1217 (defun ediff-merge-buffers-with-ancestor (buffer-A buffer-B buffer-ancestor
1218 &optional
1219 startup-hooks
1220 job-name
1221 ;; MERGE-BUFFER-FILE is the
1222 ;; file to be associated
1223 ;; with the merge buffer
1224 merge-buffer-file)
1225 "Merge buffers with ancestor."
1226 (interactive
1227 (let (bf bff)
1228 (list (setq bf (read-buffer "Buffer A to merge: "
1229 (ediff-other-buffer "") t))
1230 (setq bff (read-buffer "Buffer B to merge: "
1231 (progn
1232 ;; realign buffers so that two visible
1233 ;; bufs will be at the top
1234 (save-window-excursion (other-window 1))
1235 (ediff-other-buffer bf))
1237 (read-buffer "Ancestor buffer: "
1238 (progn
1239 ;; realign buffers so that three visible
1240 ;; bufs will be at the top
1241 (save-window-excursion (other-window 1))
1242 (ediff-other-buffer (list bf bff)))
1246 (setq startup-hooks (cons 'ediff-merge-on-startup startup-hooks))
1247 (or job-name (setq job-name 'ediff-merge-buffers-with-ancestor))
1248 (ediff-buffers-internal
1249 buffer-A buffer-B buffer-ancestor startup-hooks job-name merge-buffer-file))
1252 ;;;###autoload
1253 (defun ediff-merge-revisions (&optional file startup-hooks merge-buffer-file)
1254 ;; MERGE-BUFFER-FILE is the file to be associated with the merge buffer
1255 "Run Ediff by merging two revisions of a file.
1256 The file is the optional FILE argument or the file visited by the current
1257 buffer."
1258 (interactive)
1259 (if (stringp file) (find-file file))
1260 (let (rev1 rev2)
1261 (setq rev1
1262 (read-string
1263 (format
1264 "Version 1 to merge (default %s's working version): "
1265 (if (stringp file)
1266 (file-name-nondirectory file) "current buffer")))
1267 rev2
1268 (read-string
1269 (format
1270 "Version 2 to merge (default %s): "
1271 (if (stringp file)
1272 (file-name-nondirectory file) "current buffer"))))
1273 (ediff-load-version-control)
1274 ;; ancestor-revision=nil
1275 (funcall
1276 (intern (format "ediff-%S-merge-internal" ediff-version-control-package))
1277 rev1 rev2 nil startup-hooks merge-buffer-file)))
1280 ;;;###autoload
1281 (defun ediff-merge-revisions-with-ancestor (&optional
1282 file startup-hooks
1283 ;; MERGE-BUFFER-FILE is the file to
1284 ;; be associated with the merge
1285 ;; buffer
1286 merge-buffer-file)
1287 "Run Ediff by merging two revisions of a file with a common ancestor.
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 ancestor-rev)
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 ancestor-rev
1306 (read-string
1307 (format
1308 "Ancestor version (default %s's base revision): "
1309 (if (stringp file)
1310 (file-name-nondirectory file) "current buffer"))))
1311 (ediff-load-version-control)
1312 (funcall
1313 (intern (format "ediff-%S-merge-internal" ediff-version-control-package))
1314 rev1 rev2 ancestor-rev startup-hooks merge-buffer-file)))
1316 ;; MK: Check. This function doesn't seem to be used any more by pcvs or pcl-cvs
1317 ;;;###autoload
1318 (defun run-ediff-from-cvs-buffer (pos)
1319 "Run Ediff-merge on appropriate revisions of the selected file.
1320 First run after `M-x cvs-update'. Then place the cursor on a line describing a
1321 file and then run `run-ediff-from-cvs-buffer'."
1322 (interactive "d")
1323 (ediff-load-version-control)
1324 (let ((tin (tin-locate cvs-cookie-handle pos)))
1325 (if tin
1326 (cvs-run-ediff-on-file-descriptor tin)
1327 (error "There is no file to merge"))))
1330 ;;; Apply patch
1332 ;;;###autoload
1333 (defun ediff-patch-file (&optional arg patch-buf)
1334 "Run Ediff by patching SOURCE-FILENAME.
1335 If optional PATCH-BUF is given, use the patch in that buffer
1336 and don't ask the user.
1337 If prefix argument, then: if even argument, assume that the patch is in a
1338 buffer. If odd -- assume it is in a file."
1339 (interactive "P")
1340 (let (source-dir source-file)
1341 (require 'ediff-ptch)
1342 (setq patch-buf
1343 (ediff-get-patch-buffer
1344 (if arg (prefix-numeric-value arg)) patch-buf))
1345 (setq source-dir (cond (ediff-use-last-dir ediff-last-dir-patch)
1346 ((and (not ediff-patch-default-directory)
1347 (buffer-file-name patch-buf))
1348 (file-name-directory
1349 (expand-file-name
1350 (buffer-file-name patch-buf))))
1351 (t default-directory)))
1352 (setq source-file
1353 (read-file-name
1354 "File to patch (directory, if multifile patch): "
1355 ;; use an explicit initial file
1356 source-dir nil nil (ediff-get-default-file-name)))
1357 (ediff-dispatch-file-patching-job patch-buf source-file)))
1359 ;;;###autoload
1360 (defun ediff-patch-buffer (&optional arg patch-buf)
1361 "Run Ediff by patching the buffer specified at prompt.
1362 Without the optional prefix ARG, asks if the patch is in some buffer and
1363 prompts for the buffer or a file, depending on the answer.
1364 With ARG=1, assumes the patch is in a file and prompts for the file.
1365 With ARG=2, assumes the patch is in a buffer and prompts for the buffer.
1366 PATCH-BUF is an optional argument, which specifies the buffer that contains the
1367 patch. If not given, the user is prompted according to the prefix argument."
1368 (interactive "P")
1369 (require 'ediff-ptch)
1370 (setq patch-buf
1371 (ediff-get-patch-buffer
1372 (if arg (prefix-numeric-value arg)) patch-buf))
1373 (ediff-patch-buffer-internal
1374 patch-buf
1375 (read-buffer
1376 "Which buffer to patch? "
1377 (ediff-other-buffer patch-buf))))
1380 ;;;###autoload
1381 (defalias 'epatch 'ediff-patch-file)
1382 ;;;###autoload
1383 (defalias 'epatch-buffer 'ediff-patch-buffer)
1388 ;;; Versions Control functions
1390 ;;;###autoload
1391 (defun ediff-revision (&optional file startup-hooks)
1392 "Run Ediff by comparing versions of a file.
1393 The file is an optional FILE argument or the file entered at the prompt.
1394 Default: the file visited by the current buffer.
1395 Uses `vc.el' or `rcs.el' depending on `ediff-version-control-package'."
1396 ;; if buffer is non-nil, use that buffer instead of the current buffer
1397 (interactive "P")
1398 (if (not (stringp file))
1399 (setq file
1400 (ediff-read-file-name "Compare revisions for file"
1401 (if ediff-use-last-dir
1402 ediff-last-dir-A
1403 default-directory)
1404 (ediff-get-default-file-name)
1405 'no-dirs)))
1406 (find-file file)
1407 (if (and (buffer-modified-p)
1408 (y-or-n-p (message "Buffer %s is modified. Save buffer? "
1409 (buffer-name))))
1410 (save-buffer (current-buffer)))
1411 (let (rev1 rev2)
1412 (setq rev1
1413 (read-string
1414 (format "Revision 1 to compare (default %s's latest revision): "
1415 (file-name-nondirectory file)))
1416 rev2
1417 (read-string
1418 (format "Revision 2 to compare (default %s's current state): "
1419 (file-name-nondirectory file))))
1420 (ediff-load-version-control)
1421 (funcall
1422 (intern (format "ediff-%S-internal" ediff-version-control-package))
1423 rev1 rev2 startup-hooks)
1427 ;;;###autoload
1428 (defalias 'erevision 'ediff-revision)
1431 ;; Test if version control package is loaded and load if not
1432 ;; Is SILENT is non-nil, don't report error if package is not found.
1433 (defun ediff-load-version-control (&optional silent)
1434 (require 'ediff-vers)
1435 (or (featurep ediff-version-control-package)
1436 (if (locate-library (symbol-name ediff-version-control-package))
1437 (progn
1438 (message "") ; kill the message from `locate-library'
1439 (require ediff-version-control-package))
1440 (or silent
1441 (error "Version control package %S.el not found. Use vc.el instead"
1442 ediff-version-control-package)))))
1445 ;;;###autoload
1446 (defun ediff-version ()
1447 "Return string describing the version of Ediff.
1448 When called interactively, displays the version."
1449 (interactive)
1450 (if (interactive-p)
1451 (message (ediff-version))
1452 (format "Ediff %s of %s" ediff-version ediff-date)))
1455 ;;;###autoload
1456 (defun ediff-documentation (&optional node)
1457 "Display Ediff's manual.
1458 With optional NODE, goes to that node."
1459 (interactive)
1460 (let ((ctl-window ediff-control-window)
1461 (ctl-buf ediff-control-buffer))
1463 (ediff-skip-unsuitable-frames)
1464 (condition-case nil
1465 (progn
1466 (pop-to-buffer (get-buffer-create "*info*"))
1467 (info (if ediff-xemacs-p "ediff.info" "ediff"))
1468 (if node
1469 (Info-goto-node node)
1470 (message "Type `i' to search for a specific topic"))
1471 (raise-frame (selected-frame)))
1472 (error (beep 1)
1473 (with-output-to-temp-buffer ediff-msg-buffer
1474 (ediff-with-current-buffer standard-output
1475 (fundamental-mode))
1476 (princ ediff-BAD-INFO))
1477 (if (window-live-p ctl-window)
1478 (progn
1479 (select-window ctl-window)
1480 (set-window-buffer ctl-window ctl-buf)))))))
1483 (dolist (mess '("^Errors in diff output. Diff output is in "
1484 "^Hmm... I don't see an Ediff command around here...$"
1485 "^Undocumented command! Type `G' in Ediff Control Panel to drop a note to the Ediff maintainer$"
1486 ": This command runs in Ediff Control Buffer only!$"
1487 ": Invalid op in ediff-check-version$"
1488 "^ediff-shrink-window-C can be used only for merging jobs$"
1489 "^Lost difference info on these directories$"
1490 "^This command is inapplicable in the present context$"
1491 "^This session group has no parent$"
1492 "^Can't hide active session, $"
1493 "^Ediff: something wrong--no multiple diffs buffer$"
1494 "^Can't make context diff for Session $"
1495 "^The patch buffer wasn't found$"
1496 "^Aborted$"
1497 "^This Ediff session is not part of a session group$"
1498 "^No active Ediff sessions or corrupted session registry$"
1499 "^No session info in this line$"
1500 "^`.*' is not an ordinary file$"
1501 "^Patch appears to have failed$"
1502 "^Recomputation of differences cancelled$"
1503 "^No fine differences in this mode$"
1504 "^Lost connection to ancestor buffer...sorry$"
1505 "^Not merging with ancestor$"
1506 "^Don't know how to toggle read-only in buffer "
1507 "Emacs is not running as a window application$"
1508 "^This command makes sense only when merging with an ancestor$"
1509 "^At end of the difference list$"
1510 "^At beginning of the difference list$"
1511 "^Nothing saved for diff .* in buffer "
1512 "^Buffer is out of sync for file "
1513 "^Buffer out of sync for file "
1514 "^Output from `diff' not found$"
1515 "^You forgot to specify a region in buffer "
1516 "^All right. Make up your mind and come back...$"
1517 "^Current buffer is not visiting any file$"
1518 "^Failed to retrieve revision: $"
1519 "^Can't determine display width.$"
1520 "^File `.*' does not exist or is not readable$"
1521 "^File `.*' is a directory$"
1522 "^Buffer .* doesn't exist$"
1523 "^Directories . and . are the same: "
1524 "^Directory merge aborted$"
1525 "^Merge of directory revisions aborted$"
1526 "^Buffer .* doesn't exist$"
1527 "^There is no file to merge$"
1528 "^Version control package .*.el not found. Use vc.el instead$"))
1529 (add-to-list 'debug-ignored-errors mess))
1532 (require 'ediff-util)
1534 (run-hooks 'ediff-load-hook)
1536 (provide 'ediff)
1539 ;;; Local Variables:
1540 ;;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
1541 ;;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1)
1542 ;;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
1543 ;;; End:
1545 ;;; arch-tag: 97c71396-db02-4f41-8b48-6a51c3348fcc
1546 ;;; ediff.el ends here