;;; ediff-diff.el --- diff-related utilities
;; Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-;; 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+;; 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
;; 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 3, 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
-;; compiler pacifier
-(defvar ediff-default-variant)
-(defvar null-device)
-(defvar longlines-mode)
+(provide 'ediff-diff)
(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))
- ))
-;; end pacifier
+ (require 'ediff-util))
(require 'ediff-init)
:prefix "ediff-"
:group 'ediff)
-;; these two must be here to prevent ediff-test-utility from barking
(defcustom ediff-diff-program "diff"
- "*Program to use for generating the differential of the two files."
+ "Program to use for generating the differential of the two files."
:type 'string
:group 'ediff-diff)
(defcustom ediff-diff3-program "diff3"
- "*Program to be used for three-way comparison.
+ "Program to be used for three-way comparison.
Must produce output compatible with Unix's diff3 program."
:type 'string
:group 'ediff-diff)
;; The following functions must precede all defcustom-defined variables.
-;; The following functions needed for setting diff/diff3 options
-;; test if diff supports the --binary option
-(defsubst ediff-test-utility (diff-util option &optional files)
- (condition-case nil
- (eq 0 (apply 'call-process
- (append (list diff-util nil nil nil option) files)))
- (error (format "Cannot execute program %S." diff-util)))
- )
-
-(defun ediff-diff-mandatory-option (diff-util)
- (let ((file (if (boundp 'null-device) null-device "/dev/null")))
- (cond ((not (memq system-type '(ms-dos windows-nt windows-95)))
- "")
- ((and (string= diff-util ediff-diff-program)
- (ediff-test-utility
- ediff-diff-program "--binary" (list file file)))
- "--binary ")
- ((and (string= diff-util ediff-diff3-program)
- (ediff-test-utility
- ediff-diff3-program "--binary" (list file file file)))
- "--binary ")
- (t ""))))
-
-
-;; must be before ediff-reset-diff-options to avoid compiler errors
(fset 'ediff-set-actual-diff-options '(lambda () nil))
-;; make sure that mandatory options are added even if the user changes
-;; ediff-diff-options or ediff-diff3-options in the customization widget
-(defun ediff-reset-diff-options (symb val)
- (let* ((diff-program
- (if (eq symb 'ediff-diff-options)
- ediff-diff-program
- ediff-diff3-program))
- (mandatory-option (ediff-diff-mandatory-option diff-program)))
- (set symb (concat mandatory-option val))
- (ediff-set-actual-diff-options)
- ))
-
-
(defcustom ediff-shell
(cond ((eq system-type 'emx) "cmd") ; OS/2
((memq system-type '(ms-dos windows-nt windows-95))
shell-file-name) ; no standard name on MS-DOS
- ((memq system-type '(vax-vms axp-vms)) "*dcl*") ; VMS
(t "sh")) ; UNIX
- "*The shell used to run diff and patch.
+ "The shell used to run diff and patch.
If user's .profile or .cshrc files are set up correctly, any shell
will do. However, some people set $prompt or other things
incorrectly, which leads to undesirable output messages. These may
:group 'ediff-diff)
(defcustom ediff-cmp-program "cmp"
- "*Utility to use to determine if two files are identical.
+ "Utility to use to determine if two files are identical.
It must return code 0, if its arguments are identical files."
:type 'string
:group 'ediff-diff)
(defcustom ediff-cmp-options nil
- "*Options to pass to `ediff-cmp-program'.
+ "Options to pass to `ediff-cmp-program'.
If GNU diff is used as `ediff-cmp-program', then the most useful options
are `-I REGEXP', to ignore changes whose lines match the REGEXP."
:type '(repeat string)
:group 'ediff-diff)
-(defcustom ediff-diff-options ""
- "*Options to pass to `ediff-diff-program'.
+(defun ediff-set-diff-options (symbol value)
+ (set symbol value)
+ (ediff-set-actual-diff-options))
+
+(defcustom ediff-diff-options
+ (if (memq system-type '(ms-dos windows-nt windows-95)) "--binary" "")
+ "Options to pass to `ediff-diff-program'.
If Unix diff is used as `ediff-diff-program',
then a useful option is `-w', to ignore space.
Options `-c', `-u', and `-i' are not allowed. Case sensitivity can be
toggled interactively using \\[ediff-toggle-ignore-case].
+Do not remove the default options. If you need to change this variable, add new
+options after the default ones.
+
This variable is not for customizing the look of the differences produced by
-the command \\[ediff-show-diff-output]. Use the variable
+the command \\[ediff-show-diff-output]. Use the variable
`ediff-custom-diff-options' for that."
- :set 'ediff-reset-diff-options
+ :set 'ediff-set-diff-options
:type 'string
:group 'ediff-diff)
Use `setq-default' if setting it in .emacs")
(defcustom ediff-ignore-case-option "-i"
- "*Option that causes the diff program to ignore case of letters."
+ "Option that causes the diff program to ignore case of letters."
:type 'string
:group 'ediff-diff)
(defcustom ediff-ignore-case-option3 ""
- "*Option that causes the diff3 program to ignore case of letters.
+ "Option that causes the diff3 program to ignore case of letters.
GNU diff3 doesn't have such an option."
:type 'string
:group 'ediff-diff)
(ediff-defvar-local ediff-actual-diff-options ediff-diff-options "")
(defcustom ediff-custom-diff-program ediff-diff-program
- "*Program to use for generating custom diff output for saving it in a file.
+ "Program to use for generating custom diff output for saving it in a file.
This output is not used by Ediff internally."
:type 'string
:group 'ediff-diff)
(defcustom ediff-custom-diff-options "-c"
- "*Options to pass to `ediff-custom-diff-program'."
+ "Options to pass to `ediff-custom-diff-program'."
:type 'string
:group 'ediff-diff)
(defvar ediff-match-diff3-line "^====\\(.?\\)\C-m?$"
"Pattern to match lines produced by diff3 that describe differences.")
(defcustom ediff-diff3-options ""
- "*Options to pass to `ediff-diff3-program'."
- :set 'ediff-reset-diff-options
+ "Options to pass to `ediff-diff3-program'."
+ :set 'ediff-set-diff-options
:type 'string
:group 'ediff-diff)
(defcustom ediff-diff3-ok-lines-regexp
"^\\([1-3]:\\|====\\| \\|.*Warning *:\\|.*No newline\\|.*missing newline\\|^\C-m$\\)"
- "*Regexp that matches normal output lines from `ediff-diff3-program'.
+ "Regexp that matches normal output lines from `ediff-diff3-program'.
Lines that do not match are assumed to be error messages."
:type 'regexp
:group 'ediff-diff)
;; fixup diff-list
(if diff3-job
(cond ((not file-A)
- (mapcar (lambda (elt)
- (aset elt 0 nil)
- (aset elt 1 nil))
- (cdr diff-list)))
+ (mapc (lambda (elt)
+ (aset elt 0 nil)
+ (aset elt 1 nil))
+ (cdr diff-list)))
((not file-B)
- (mapcar (lambda (elt)
- (aset elt 2 nil)
- (aset elt 3 nil))
- (cdr diff-list)))
+ (mapc (lambda (elt)
+ (aset elt 2 nil)
+ (aset elt 3 nil))
+ (cdr diff-list)))
((not file-C)
- (mapcar (lambda (elt)
- (aset elt 4 nil)
- (aset elt 5 nil))
- (cdr diff-list)))
+ (mapc (lambda (elt)
+ (aset elt 4 nil)
+ (aset elt 5 nil))
+ (cdr diff-list)))
))
(ediff-convert-fine-diffs-to-overlays diff-list reg-num)
(get-buffer-create (ediff-unique-buffer-name
"*ediff-errors" "*"))))
(ediff-with-current-buffer ediff-error-buffer
+ (setq buffer-undo-list t)
(erase-buffer)
(insert (ediff-with-current-buffer diff-buff (buffer-string)))
(goto-char (point-min))
- (delete-matching-lines ok-regexp)
- (if (memq system-type '(vax-vms axp-vms))
- (delete-matching-lines "^$")))
+ (delete-matching-lines ok-regexp))
;; If diff reports errors, show them then quit.
(if (/= 0 (ediff-with-current-buffer ediff-error-buffer (buffer-size)))
(let ((ctl-buf ediff-control-buffer)
(ediff-make-fine-diffs n 'noforce)
(ediff-make-fine-diffs n 'skip)))
- ;; highlight iff fine diffs already exist
+ ;; highlight if fine diffs already exist
((eq ediff-auto-refine 'off)
(ediff-make-fine-diffs n 'skip))))
(let ((fine-diff-vector (ediff-get-fine-diff-vector n buf-type))
(face (if default
'default
- (face-name
- (ediff-get-symbol-from-alist
- buf-type ediff-fine-diff-face-alist))))
+ (ediff-get-symbol-from-alist
+ buf-type ediff-fine-diff-face-alist)
+ ))
(priority (if default
0
(1+ (or (ediff-overlay-get
)))
-(defsubst ediff-convert-fine-diffs-to-overlays (diff-list region-num)
+(defun ediff-convert-fine-diffs-to-overlays (diff-list region-num)
(ediff-set-fine-overlays-in-one-buffer 'A diff-list region-num)
(ediff-set-fine-overlays-in-one-buffer 'B diff-list region-num)
(if ediff-3way-job
;; args.
(defun ediff-exec-process (program buffer synch options &rest files)
(let ((data (match-data))
- (coding-system-for-read ediff-coding-system-for-read)
+ ;; If this is a buffer job, we are diffing temporary files
+ ;; produced by Emacs with ediff-coding-system-for-write, so
+ ;; use the same encoding to read the results.
+ (coding-system-for-read
+ (if (string-match "buffer" (symbol-name ediff-job-name))
+ ediff-coding-system-for-write
+ ediff-coding-system-for-read))
args)
(setq args (append (split-string options) files))
(setq args (delete "" (delq nil args))) ; delete nil and "" from arguments
(make-variable-buffer-local 'ediff-whitespace)
(defvar ediff-word-1
- (ediff-cond-compile-for-xemacs-or-emacs "a-zA-Z---_" "-[:word:]_")
+ (if (featurep 'xemacs) "a-zA-Z---_" "-[:word:]_")
"*Characters that constitute words of type 1.
More precisely, [ediff-word-1] is a regexp that matches type 1 words.
See `ediff-forward-word' for more details.")
(defun ediff-same-contents (d1 d2 &optional filter-re)
- "Returns t iff D1 and D2 have the same content.
+ "Return t if D1 and D2 have the same content.
D1 and D2 can either be both directories or both regular files.
Symlinks and the likes are not handled.
If FILTER-RE is non-nil, recursive checking in directories
(defun ediff-set-actual-diff-options ()
(if ediff-ignore-case
- (setq ediff-actual-diff-options
+ (setq ediff-actual-diff-options
(concat ediff-diff-options " " ediff-ignore-case-option)
ediff-actual-diff3-options
(concat ediff-diff3-options " " ediff-ignore-case-option3))
)
-(provide 'ediff-diff)
-
-;;; 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:
+;; 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: a86d448e-58d7-4572-a1d9-fdedfa22f648
+;; arch-tag: a86d448e-58d7-4572-a1d9-fdedfa22f648
;;; ediff-diff.el ends here