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50a07e1856
* viper-init.el (viper-cond-compile-for-xemacs-or-emacs): new macro that replaces viper-emacs-p and viper-xemacs-p in many cases. Used to reduce the number of warnings. * viper-cmd.el: use viper-cond-compile-for-xemacs-or-emacs. (viper-standard-value): moved here from viper.el. (viper-set-unread-command-events): moved to viper-util.el (viper-check-minibuffer-overlay): make sure viper-minibuffer-overlay is moved to cover the entire input field. * viper-util.el: use viper-cond-compile-for-xemacs-or-emacs. (viper-read-key-sequence, viper-set-unread-command-events, viper-char-symbol-sequence-p, viper-char-array-p): moved here. * viper-ex.el: use viper-cond-compile-for-xemacs-or-emacs. * viper-keym.el: use viper-cond-compile-for-xemacs-or-emacs. * viper-mous.el: use viper-cond-compile-for-xemacs-or-emacs. * viper-macs.el (viper-char-array-p, viper-char-symbol-sequence-p, viper-event-vector-p): moved to viper-util.el * viper.el (viper-standard-value): moved to viper-cmd.el. Use viper-cond-compile-for-xemacs-or-emacs. * ediff-help.el: use ediff-cond-compile-for-xemacs-or-emacs. * ediff-hook.el: use ediff-cond-compile-for-xemacs-or-emacs. * ediff-init.el (ediff-cond-compile-for-xemacs-or-emacs): new macro designed to be used in many places where ediff-emacs-p or ediff-xemacs-p was previously used. Reduces the number of warnings. Use ediff-cond-compile-for-xemacs-or-emacs in many places in lieue of ediff-xemacs-p. (ediff-make-current-diff-overlay, ediff-highlight-diff-in-one-buffer, ediff-convert-fine-diffs-to-overlays, ediff-empty-diff-region-p, ediff-whitespace-diff-region-p, ediff-get-region-contents): moved to ediff-util.el. (ediff-event-key): moved here. * ediff-merge.el: got rid of unreferenced variables. * ediff-mult.el: use ediff-cond-compile-for-xemacs-or-emacs. * ediff-util.el: use ediff-cond-compile-for-xemacs-or-emacs. (ediff-cleanup-mess): improved the way windows are set up after quitting ediff. (ediff-janitor): use ediff-dispose-of-variant-according-to-user. (ediff-dispose-of-variant-according-to-user): new function designed to be smarter and also understands indirect buffers. (ediff-highlight-diff-in-one-buffer, ediff-unhighlight-diff-in-one-buffer, ediff-unhighlight-diffs-totally-in-one-buffer, ediff-highlight-diff, ediff-highlight-diff, ediff-unhighlight-diff, ediff-unhighlight-diffs-totally, ediff-empty-diff-region-p, ediff-whitespace-diff-region-p, ediff-get-region-contents, ediff-make-current-diff-overlay): moved here. (ediff-format-bindings-of): new function by Hannu Koivisto <azure@iki.fi>. (ediff-setup): make sure the merge buffer is always widened and modifiable. (ediff-write-merge-buffer-and-maybe-kill): refuse to write the result of a merge into a file visited by another buffer. (ediff-arrange-autosave-in-merge-jobs): check if the merge file is visited by another buffer and ask to save/delete that buffer. (ediff-verify-file-merge-buffer): new function to do the above. * ediff-vers.el: load ediff-init.el at compile time. * ediff-wind.el: use ediff-cond-compile-for-xemacs-or-emacs. * ediff.el (ediff-windows, ediff-regions-wordwise, ediff-regions-linewise): use indirect buffers to improve robustness and make it possible to compare regions of the same buffer (even overlapping regions). (ediff-clone-buffer-for-region-comparison, ediff-clone-buffer-for-window-comparison): new functions. (ediff-files-internal): refuse to compare identical files. (ediff-regions-internal): get rid of the warning about comparing regions of the same buffer. * ediff-diff.el (ediff-convert-fine-diffs-to-overlays): moved here. Plus the following fixes courtesy of Dave Love: Doc fixes. (ediff-word-1): Use word class and move - to the front per regexp documentation. (ediff-wordify): Bind forward-word-function outside loop. (ediff-copy-to-buffer): Use insert-buffer-substring rather than consing buffer contents. (ediff-goto-word): Move syntax table setting outside loop.
392 lines
14 KiB
EmacsLisp
392 lines
14 KiB
EmacsLisp
;;; ediff-merg.el --- merging utilities
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;; Copyright (C) 1994, 95, 96, 97, 98, 99, 2000, 01, 02 Free Software Foundation, Inc.
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;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;;; Code:
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(provide 'ediff-merg)
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;; compiler pacifier
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(defvar ediff-window-A)
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(defvar ediff-window-B)
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(defvar ediff-window-C)
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(defvar ediff-merge-window-share)
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(defvar ediff-window-config-saved)
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(eval-when-compile
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(let ((load-path (cons (expand-file-name ".") load-path)))
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(or (featurep 'ediff-init)
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(load "ediff-init.el" nil nil 'nosuffix))
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(or (featurep 'ediff-util)
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(load "ediff-util.el" nil nil 'nosuffix))
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))
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;; end pacifier
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(require 'ediff-init)
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(defcustom ediff-quit-merge-hook 'ediff-maybe-save-and-delete-merge
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"*Hooks to run before quitting a merge job.
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The most common use is to save and delete the merge buffer."
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:type 'hook
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:group 'ediff-merge)
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(defcustom ediff-default-variant 'combined
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"*The variant to be used as a default for buffer C in merging.
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Valid values are the symbols `default-A', `default-B', and `combined'."
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:type '(radio (const default-A) (const default-B) (const combined))
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:group 'ediff-merge)
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(defcustom ediff-combination-pattern
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'("<<<<<<< variant A" A ">>>>>>> variant B" B "####### Ancestor" Ancestor "======= end")
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"*Pattern to be used for combining difference regions in buffers A and B.
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The value must be a list of the form
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(STRING1 bufspec1 STRING2 bufspec2 STRING3 bufspec3 STRING4)
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where bufspec is the symbol A, B, or Ancestor. For instance, if the value is
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'(STRING1 A STRING2 Ancestor STRING3 B STRING4) then the
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combined text will look like this:
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STRING1
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diff region from variant A
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STRING2
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diff region from the ancestor
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STRING3
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diff region from variant B
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STRING4
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"
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:type '(choice (list string symbol string symbol string)
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(list string symbol string symbol string symbol string))
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:group 'ediff-merge)
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(defcustom ediff-show-clashes-only nil
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"*If t, show only those diff regions where both buffers disagree with the ancestor.
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This means that regions that have status prefer-A or prefer-B will be
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skipped over. nil means show all regions."
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:type 'boolean
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:group 'ediff-merge
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)
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(make-variable-buffer-local 'ediff-show-clashes-only)
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(defcustom ediff-skip-merge-regions-that-differ-from-default nil
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"*If t, show only the regions that have not been changed by the user.
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A region is considered to have been changed if it is different from the current
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default (`default-A', `default-B', `combined') and it hasn't been marked as
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`prefer-A' or `prefer-B'.
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A region is considered to have been changed also when it is marked as
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as `prefer-A', but is different from the corresponding difference region in
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Buffer A or if it is marked as `prefer-B' and is different from the region in
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Buffer B."
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:type 'boolean
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:group 'ediff-merge
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)
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(make-variable-buffer-local 'ediff-skip-merge-regions-that-differ-from-default)
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;; If ediff-show-clashes-only, check if there is no clash between the ancestor
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;; and one of the variants.
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(defsubst ediff-merge-region-is-non-clash (n)
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(and ediff-show-clashes-only
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(string-match "prefer" (or (ediff-get-state-of-merge n) ""))))
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;; If ediff-skip-changed-regions, check if the merge region differs from
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;; the current default. If a region is different from the default, it means
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;; that the user has made determination as to how to merge for this particular
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;; region.
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(defsubst ediff-skip-merge-region-if-changed-from-default-p (n)
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(and ediff-skip-merge-regions-that-differ-from-default
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(ediff-merge-changed-from-default-p n 'prefers-too)))
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(defun ediff-get-combined-region (n)
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(let ((pattern-list ediff-combination-pattern)
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(combo-region "")
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(err-msg
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"ediff-combination-pattern: Invalid format. Please consult the documentation")
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region-delim region-spec)
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(if (< (length pattern-list) 5)
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(error err-msg))
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(while (> (length pattern-list) 2)
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(setq region-delim (nth 0 pattern-list)
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region-spec (nth 1 pattern-list))
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(or (and (stringp region-delim) (memq region-spec '(A B Ancestor)))
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(error err-msg))
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(condition-case nil
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(setq combo-region
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(concat combo-region
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region-delim "\n"
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(ediff-get-region-contents
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n region-spec ediff-control-buffer)))
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(error ""))
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(setq pattern-list (cdr (cdr pattern-list)))
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)
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(setq region-delim (nth 0 pattern-list))
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(or (stringp region-delim)
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(error err-msg))
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(setq combo-region (concat combo-region region-delim "\n"))
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))
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;;(defsubst ediff-make-combined-diff (regA regB)
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;; (concat (nth 0 ediff-combination-pattern) "\n"
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;; regA
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;; (nth 1 ediff-combination-pattern) "\n"
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;; regB
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;; (nth 2 ediff-combination-pattern) "\n"))
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(defsubst ediff-set-state-of-all-diffs-in-all-buffers (ctl-buf)
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(let ((n 0))
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(while (< n ediff-number-of-differences)
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(ediff-set-state-of-diff-in-all-buffers n ctl-buf)
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(setq n (1+ n)))))
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(defun ediff-set-state-of-diff-in-all-buffers (n ctl-buf)
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(let ((regA (ediff-get-region-contents n 'A ctl-buf))
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(regB (ediff-get-region-contents n 'B ctl-buf))
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(regC (ediff-get-region-contents n 'C ctl-buf)))
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(cond ((and (string= regA regB) (string= regA regC))
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(ediff-set-state-of-diff n 'A "=diff(B)")
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(ediff-set-state-of-diff n 'B "=diff(C)")
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(ediff-set-state-of-diff n 'C "=diff(A)"))
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((string= regA regB)
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(ediff-set-state-of-diff n 'A "=diff(B)")
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(ediff-set-state-of-diff n 'B "=diff(A)")
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(ediff-set-state-of-diff n 'C nil))
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((string= regA regC)
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(ediff-set-state-of-diff n 'A "=diff(C)")
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(ediff-set-state-of-diff n 'C "=diff(A)")
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(ediff-set-state-of-diff n 'B nil))
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((string= regB regC)
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(ediff-set-state-of-diff n 'C "=diff(B)")
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(ediff-set-state-of-diff n 'B "=diff(C)")
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(ediff-set-state-of-diff n 'A nil))
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((string= regC (ediff-get-combined-region n))
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(ediff-set-state-of-diff n 'A nil)
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(ediff-set-state-of-diff n 'B nil)
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(ediff-set-state-of-diff n 'C "=diff(A+B)"))
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(t (ediff-set-state-of-diff n 'A nil)
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(ediff-set-state-of-diff n 'B nil)
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(ediff-set-state-of-diff n 'C nil)))
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))
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(defun ediff-set-merge-mode ()
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(normal-mode t)
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(remove-hook 'local-write-file-hooks 'ediff-set-merge-mode))
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;; Go over all diffs starting with DIFF-NUM and copy regions into buffer C
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;; according to the state of the difference.
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;; Since ediff-copy-diff refuses to copy identical diff regions, there is
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;; no need to optimize ediff-do-merge any further.
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;;
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;; If re-merging, change state of merge in all diffs starting with
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;; DIFF-NUM, except those where the state is prefer-* or where it is
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;; `default-*' or `combined' but the buf C region appears to be modified
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;; since last set by default.
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(defun ediff-do-merge (diff-num &optional remerging)
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(if (< diff-num 0) (setq diff-num 0))
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(let ((n diff-num)
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;;(default-state-of-merge (format "%S" ediff-default-variant))
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do-not-copy state-of-merge)
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(while (< n ediff-number-of-differences)
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(setq do-not-copy nil) ; reset after each cycle
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(if (= (mod n 10) 0)
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(message "%s buffers A & B into C ... region %d of %d"
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(if remerging "Re-merging" "Merging")
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n
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ediff-number-of-differences))
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(setq state-of-merge (ediff-get-state-of-merge n))
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(if remerging
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;;(let ((reg-A (ediff-get-region-contents n 'A ediff-control-buffer))
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;; (reg-B (ediff-get-region-contents n 'B ediff-control-buffer))
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;; (reg-C (ediff-get-region-contents n 'C ediff-control-buffer)))
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(let ()
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;; if region was edited since it was first set by default
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(if (or (ediff-merge-changed-from-default-p n)
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;; was preferred
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(string-match "prefer" state-of-merge))
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;; then ignore
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(setq do-not-copy t))
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;; change state of merge for this diff, if necessary
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(if (and (string-match "\\(default\\|combined\\)" state-of-merge)
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(not do-not-copy))
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(ediff-set-state-of-merge
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n (format "%S" ediff-default-variant)))
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))
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;; state-of-merge may have changed via ediff-set-state-of-merge, so
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;; check it once again
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(setq state-of-merge (ediff-get-state-of-merge n))
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(or do-not-copy
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(if (string= state-of-merge "combined")
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;; use n+1 because ediff-combine-diffs works via user numbering
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;; of diffs, which is 1+ to what ediff uses internally
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(ediff-combine-diffs (1+ n) 'batch)
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(ediff-copy-diff
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n (if (string-match "-A" state-of-merge) 'A 'B) 'C 'batch)))
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(setq n (1+ n)))
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(message "Merging buffers A & B into C ... Done")
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))
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(defun ediff-re-merge ()
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"Remerge unmodified diff regions using a new default. Start with the current region."
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(interactive)
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(let* ((default-variant-alist
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(list '("default-A") '("default-B") '("combined")))
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(actual-alist
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(delete (list (symbol-name ediff-default-variant))
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default-variant-alist)))
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(setq ediff-default-variant
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(intern
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(completing-read
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(format "Current merge default is `%S'. New default: "
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ediff-default-variant)
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actual-alist nil 'must-match)))
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(ediff-do-merge ediff-current-difference 'remerge)
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(ediff-recenter)
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))
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(defun ediff-shrink-window-C (arg)
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"Shrink window C to just one line.
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With a prefix argument, returns window C to its normal size.
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Used only for merging jobs."
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(interactive "P")
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(if (not ediff-merge-job)
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(error "ediff-shrink-window-C can be used only for merging jobs"))
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(cond ((eq arg '-) (setq arg -1))
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((not (numberp arg)) (setq arg nil)))
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(cond ((null arg)
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(let ((ediff-merge-window-share
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(if (< (window-height ediff-window-C) 3)
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ediff-merge-window-share 0)))
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(setq ediff-window-config-saved "") ; force redisplay
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(ediff-recenter 'no-rehighlight)))
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((and (< arg 0) (> (window-height ediff-window-C) 2))
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(setq ediff-merge-window-share (* ediff-merge-window-share 0.9))
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(setq ediff-window-config-saved "") ; force redisplay
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(ediff-recenter 'no-rehighlight))
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((and (> arg 0) (> (window-height ediff-window-A) 2))
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(setq ediff-merge-window-share (* ediff-merge-window-share 1.1))
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(setq ediff-window-config-saved "") ; force redisplay
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(ediff-recenter 'no-rehighlight))))
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;; N here is the user's region number. It is 1+ what Ediff uses internally.
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(defun ediff-combine-diffs (n &optional batch-invocation)
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"Combine Nth diff regions of buffers A and B and place the combination in C.
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N is a prefix argument. If nil, combine the current difference regions.
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Combining is done according to the specifications in variable
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`ediff-combination-pattern'."
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(interactive "P")
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(setq n (if (numberp n) (1- n) ediff-current-difference))
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(let (reg-combined)
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;;(setq regA (ediff-get-region-contents n 'A ediff-control-buffer)
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;; regB (ediff-get-region-contents n 'B ediff-control-buffer))
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;;(setq reg-combined (ediff-make-combined-diff regA regB))
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(setq reg-combined (ediff-get-combined-region n))
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(ediff-copy-diff n nil 'C batch-invocation reg-combined))
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(or batch-invocation (ediff-jump-to-difference (1+ n))))
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;; Checks if the region in buff C looks like a combination of the regions
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;; in buffers A and B. Return a list (reg-a-beg reg-a-end reg-b-beg reg-b-end)
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;; These refer to where the delimiters for region A, B, Ancestor start and end
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;; in buffer C
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(defun ediff-looks-like-combined-merge (region-num)
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(if ediff-merge-job
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(let ((combined (string-match (regexp-quote "(A+B)")
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(or (ediff-get-state-of-diff region-num 'C)
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"")))
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(mrgreg-beg (ediff-get-diff-posn 'C 'beg region-num))
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(mrgreg-end (ediff-get-diff-posn 'C 'end region-num))
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(pattern-list ediff-combination-pattern)
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delim reg-beg reg-end delim-regs-list)
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(if combined
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(ediff-with-current-buffer ediff-buffer-C
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(while pattern-list
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(goto-char mrgreg-beg)
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(setq delim (nth 0 pattern-list))
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(search-forward delim mrgreg-end 'noerror)
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(setq reg-beg (match-beginning 0))
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(setq reg-end (match-end 0))
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(if (and reg-beg reg-end)
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(setq delim-regs-list
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;; in reverse
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(cons reg-end (cons reg-beg delim-regs-list))))
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(if (> (length pattern-list) 1)
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(setq pattern-list (cdr (cdr pattern-list)))
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(setq pattern-list nil))
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)))
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(reverse delim-regs-list)
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)))
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(eval-when-compile (defvar state-of-merge)) ; dynamic var
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;; Check if the non-preferred merge has been modified since originally set.
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;; This affects only the regions that are marked as default-A/B or combined.
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;; If PREFERS-TOO is non-nil, then look at the regions marked as prefers-A/B as
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;; well.
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(defun ediff-merge-changed-from-default-p (diff-num &optional prefers-too)
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(let ((reg-A (ediff-get-region-contents diff-num 'A ediff-control-buffer))
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(reg-B (ediff-get-region-contents diff-num 'B ediff-control-buffer))
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(reg-C (ediff-get-region-contents diff-num 'C ediff-control-buffer)))
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(setq state-of-merge (ediff-get-state-of-merge diff-num))
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;; if region was edited since it was first set by default
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(or (and (string= state-of-merge "default-A")
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(not (string= reg-A reg-C)))
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(and (string= state-of-merge "default-B")
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(not (string= reg-B reg-C)))
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(and (string= state-of-merge "combined")
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;;(not (string= (ediff-make-combined-diff reg-A reg-B) reg-C)))
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(not (string= (ediff-get-combined-region diff-num) reg-C)))
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(and prefers-too
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(string= state-of-merge "prefer-A")
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(not (string= reg-A reg-C)))
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(and prefers-too
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(string= state-of-merge "prefer-B")
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(not (string= reg-B reg-C)))
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)))
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;;; Local Variables:
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;;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
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;;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1)
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;;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
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;;; End:
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;;; ediff-merg.el ends here
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