;;; ediff-merg.el --- merging utilities
-;; Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+;; 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-;; Author: Michael Kifer <kifer@cs.sunysb.edu>
+;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
;;; Code:
-(provide 'ediff-merg)
;; compiler pacifier
(defvar ediff-window-A)
(defvar ediff-window-config-saved)
(eval-when-compile
- (let ((load-path (cons (expand-file-name ".") load-path)))
- (or (featurep 'ediff-init)
- (load "ediff-init.el" nil nil 'nosuffix))
- (or (featurep 'ediff-util)
- (load "ediff-util.el" nil nil 'nosuffix))
- ))
+ (require 'ediff-util))
;; end pacifier
(require 'ediff-init)
(defcustom ediff-quit-merge-hook 'ediff-maybe-save-and-delete-merge
- "*Hooks to run before quitting a merge job.
+ "Hooks to run before quitting a merge job.
The most common use is to save and delete the merge buffer."
:type 'hook
:group 'ediff-merge)
(defcustom ediff-default-variant 'combined
- "*The variant to be used as a default for buffer C in merging.
+ "The variant to be used as a default for buffer C in merging.
Valid values are the symbols `default-A', `default-B', and `combined'."
:type '(radio (const default-A) (const default-B) (const combined))
:group 'ediff-merge)
-(defcustom ediff-combination-pattern
+(defcustom ediff-combination-pattern
'("<<<<<<< variant A" A ">>>>>>> variant B" B "####### Ancestor" Ancestor "======= end")
- "*Pattern to be used for combining difference regions in buffers A and B.
-The value must be a list of the form
-(STRING1 bufspec1 STRING2 bufspec2 STRING3 bufspec3 STRING4)
+ "Pattern to be used for combining difference regions in buffers A and B.
+The value must be a list of the form
+\(STRING1 bufspec1 STRING2 bufspec2 STRING3 bufspec3 STRING4)
where bufspec is the symbol A, B, or Ancestor. For instance, if the value is
'(STRING1 A STRING2 Ancestor STRING3 B STRING4) then the
combined text will look like this:
:group 'ediff-merge)
(defcustom ediff-show-clashes-only nil
- "*If t, show only those diff regions where both buffers disagree with the ancestor.
+ "If t, show only those diff regions where both buffers disagree with the ancestor.
This means that regions that have status prefer-A or prefer-B will be
-skiped over. Nil means show all regions."
+skipped over. A value of nil means show all regions."
:type 'boolean
:group 'ediff-merge
)
(make-variable-buffer-local 'ediff-show-clashes-only)
(defcustom ediff-skip-merge-regions-that-differ-from-default nil
- "*If t, show only the regions that have not been changed by the user.
+ "If t, show only the regions that have not been changed by the user.
A region is considered to have been changed if it is different from the current
default (`default-A', `default-B', `combined') and it hasn't been marked as
`prefer-A' or `prefer-B'.
-A region is considered to have been changed also when it is marked as
+A region is considered to have been changed also when it is marked as
as `prefer-A', but is different from the corresponding difference region in
Buffer A or if it is marked as `prefer-B' and is different from the region in
Buffer B."
)
(make-variable-buffer-local 'ediff-skip-merge-regions-that-differ-from-default)
+;; check if there is no clash between the ancestor and one of the variants.
+;; if it is not a merge job then return true
+(defsubst ediff-merge-region-is-non-clash (n)
+ (if (ediff-merge-job)
+ (string-match "prefer" (or (ediff-get-state-of-merge n) ""))
+ t))
+
;; If ediff-show-clashes-only, check if there is no clash between the ancestor
;; and one of the variants.
-(defsubst ediff-merge-region-is-non-clash (n)
+(defsubst ediff-merge-region-is-non-clash-to-skip (n)
(and ediff-show-clashes-only
- (string-match "prefer" (or (ediff-get-state-of-merge n) ""))))
+ (ediff-merge-region-is-non-clash n)))
;; If ediff-skip-changed-regions, check if the merge region differs from
;; the current default. If a region is different from the default, it means
;; that the user has made determination as to how to merge for this particular
-;; region.
+;; region.
(defsubst ediff-skip-merge-region-if-changed-from-default-p (n)
(and ediff-skip-merge-regions-that-differ-from-default
(ediff-merge-changed-from-default-p n 'prefers-too)))
(combo-region "")
(err-msg
"ediff-combination-pattern: Invalid format. Please consult the documentation")
- diff-region region-delim region-spec)
+ region-delim region-spec)
(if (< (length pattern-list) 5)
(error err-msg))
(or (and (stringp region-delim) (memq region-spec '(A B Ancestor)))
(error err-msg))
- (condition-case err
+ (condition-case nil
(setq combo-region
(concat combo-region
region-delim "\n"
- (ediff-get-region-contents
+ (ediff-get-region-contents
n region-spec ediff-control-buffer)))
(error ""))
(setq pattern-list (cdr (cdr pattern-list)))
(while (< n ediff-number-of-differences)
(ediff-set-state-of-diff-in-all-buffers n ctl-buf)
(setq n (1+ n)))))
-
+
(defun ediff-set-state-of-diff-in-all-buffers (n ctl-buf)
(let ((regA (ediff-get-region-contents n 'A ctl-buf))
(regB (ediff-get-region-contents n 'B ctl-buf))
(ediff-set-state-of-diff n 'B nil)
(ediff-set-state-of-diff n 'C nil)))
))
-
+
(defun ediff-set-merge-mode ()
(normal-mode t)
(remove-hook 'local-write-file-hooks 'ediff-set-merge-mode))
-
+
;; Go over all diffs starting with DIFF-NUM and copy regions into buffer C
;; according to the state of the difference.
;; Since ediff-copy-diff refuses to copy identical diff regions, there is
(if remerging "Re-merging" "Merging")
n
ediff-number-of-differences))
-
+
(setq state-of-merge (ediff-get-state-of-merge n))
(if remerging
- (let ((reg-A (ediff-get-region-contents n 'A ediff-control-buffer))
- (reg-B (ediff-get-region-contents n 'B ediff-control-buffer))
- (reg-C (ediff-get-region-contents n 'C ediff-control-buffer)))
-
+ ;;(let ((reg-A (ediff-get-region-contents n 'A ediff-control-buffer))
+ ;; (reg-B (ediff-get-region-contents n 'B ediff-control-buffer))
+ ;; (reg-C (ediff-get-region-contents n 'C ediff-control-buffer)))
+ (let ()
+
;; if region was edited since it was first set by default
(if (or (ediff-merge-changed-from-default-p n)
;; was preferred
(string-match "prefer" state-of-merge))
;; then ignore
(setq do-not-copy t))
-
+
;; change state of merge for this diff, if necessary
(if (and (string-match "\\(default\\|combined\\)" state-of-merge)
(not do-not-copy))
(ediff-set-state-of-merge
n (format "%S" ediff-default-variant)))
))
-
+
;; state-of-merge may have changed via ediff-set-state-of-merge, so
;; check it once again
(setq state-of-merge (ediff-get-state-of-merge n))
-
+
(or do-not-copy
(if (string= state-of-merge "combined")
;; use n+1 because ediff-combine-diffs works via user numbering
;; of diffs, which is 1+ to what ediff uses internally
(ediff-combine-diffs (1+ n) 'batch)
- (ediff-copy-diff
+ (ediff-copy-diff
n (if (string-match "-A" state-of-merge) 'A 'B) 'C 'batch)))
(setq n (1+ n)))
(message "Merging buffers A & B into C ... Done")
))
-
+
(defun ediff-re-merge ()
"Remerge unmodified diff regions using a new default. Start with the current region."
default-variant-alist)))
(setq ediff-default-variant
(intern
- (completing-read
+ (completing-read
(format "Current merge default is `%S'. New default: "
ediff-default-variant)
actual-alist nil 'must-match)))
(ediff-do-merge ediff-current-difference 'remerge)
(ediff-recenter)
))
-
+
(defun ediff-shrink-window-C (arg)
"Shrink window C to just one line.
With a prefix argument, returns window C to its normal size.
`ediff-combination-pattern'."
(interactive "P")
(setq n (if (numberp n) (1- n) ediff-current-difference))
-
- (let (regA regB reg-combined)
+
+ (let (reg-combined)
;;(setq regA (ediff-get-region-contents n 'A ediff-control-buffer)
;; regB (ediff-get-region-contents n 'B ediff-control-buffer))
;;(setq reg-combined (ediff-make-combined-diff regA regB))
(setq reg-combined (ediff-get-combined-region n))
-
+
(ediff-copy-diff n nil 'C batch-invocation reg-combined))
(or batch-invocation (ediff-jump-to-difference (1+ n))))
-
+
;; Checks if the region in buff C looks like a combination of the regions
;; in buffers A and B. Return a list (reg-a-beg reg-a-end reg-b-beg reg-b-end)
(mrgreg-end (ediff-get-diff-posn 'C 'end region-num))
(pattern-list ediff-combination-pattern)
delim reg-beg reg-end delim-regs-list)
-
+
(if combined
(ediff-with-current-buffer ediff-buffer-C
(while pattern-list
(reverse delim-regs-list)
)))
-
+
+(defvar state-of-merge) ; dynamic var
;; Check if the non-preferred merge has been modified since originally set.
;; This affects only the regions that are marked as default-A/B or combined.
(reg-C (ediff-get-region-contents diff-num 'C ediff-control-buffer)))
(setq state-of-merge (ediff-get-state-of-merge diff-num))
-
+
;; if region was edited since it was first set by default
(or (and (string= state-of-merge "default-A")
(not (string= reg-A reg-C)))
(string= state-of-merge "prefer-B")
(not (string= reg-B reg-C)))
)))
-
-;;; Local Variables:
-;;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
-;;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1)
-;;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
-;;; End:
-;; ediff-merg.el ends here
+(provide 'ediff-merg)
+
+
+;; Local Variables:
+;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
+;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1)
+;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
+;; End:
+
+;; arch-tag: 9b798cf9-02ba-487f-a62e-b63aa823dbfb
+;;; ediff-merg.el ends here