--- /dev/null
+;;; all.el --- Edit all lines matching a given regexp.
+
+;; Copyright (C) 1985, 1986, 1987, 1992, 1994, 2011 Free Software Foundation, Inc.
+;; Copyright (C) 1994 Per Abrahamsen
+
+;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
+;; Version: $Id: all.el,v 5.2 1997/03/04 10:29:42 abraham Exp $
+;; Keywords: matching
+
+;; LCD Archive Entry:
+;; all|Per Abrahamsen|abraham@dina.kvl.dk|
+;; Edit all lines matching a given regexp|
+;; $Date: 1997/03/04 10:29:42 $|$Revision: 5.2 $|~/misc/all.Z|
+
+;; This program 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.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program; if not, write to the Free Software
+;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+;;; Commentary:
+
+;; Just like occur, except that changes in the *All* buffer is
+;; propagated to the original buffer.
+
+;; I also added highlighting of the matches.
+
+;; You can no longer use mouse-2 to find a match in the original file,
+;; since the default definition of mouse to is useful.
+;; However, `C-c C-c' still works.
+
+;; Line numbers are not listed in the *All* buffer.
+
+;; Ok, it is _not_ just like occur.
+
+;; Some limitations:
+
+;; - Undo in the *All* buffer is an ordinary change in the original.
+;; - Changes to the original buffer is not reflected in the *All* buffer.
+;; - A single change in the *All* buffer must be limited to a single match.
+
+;; Requires GNU Emacs 19.23 or later.
+
+;;; Code:
+
+(defvar all-mode-map ())
+
+(if all-mode-map
+ ()
+ (setq all-mode-map (make-sparse-keymap))
+ (define-key all-mode-map "\C-c\C-c" 'all-mode-goto))
+
+(defvar all-buffer nil)
+
+(defun all-mode ()
+ "Major mode for output from \\[all].
+
+All changes made in this buffer will be propagated to the buffer where
+you ran \\[all].
+
+Press \\[all-mode-goto] to go to the same spot in the original buffer."
+ (kill-all-local-variables)
+ (use-local-map all-mode-map)
+ (setq major-mode 'all-mode)
+ (setq mode-name "All")
+ (make-local-variable 'all-buffer)
+ (run-hooks 'all-mode-hook))
+
+(defun all-mode-find (pos)
+ ;; Find position in original buffer corresponding to POS.
+ (let ((overlay (all-mode-find-overlay pos)))
+ (if overlay
+ (+ (marker-position (overlay-get overlay 'marker))
+ (- pos (overlay-start overlay))))))
+
+(defun all-mode-find-overlay (pos)
+ ;; Find the overlay containing POS.
+ (let ((overlays (overlays-at pos)))
+ (while (and overlays (null (overlay-get (car overlays) 'marker)))
+ (setq overlays (cdr overlays)))
+ (car-safe overlays)))
+
+(defun all-mode-goto ()
+ "Move point to the corresponding position in the original buffer."
+ (interactive)
+ (let ((pos (all-mode-find (point))))
+ (if pos
+ (pop-to-buffer all-buffer)
+ (error "This text is not from the original buffer"))
+ (goto-char pos)))
+
+(defvar all-initialization-p nil)
+
+(defun all-before-change-function (from to)
+ ;; Check that change is legal
+ (and all-buffer
+ (not all-initialization-p)
+ (let ((start (all-mode-find-overlay from))
+ (end (all-mode-find-overlay to)))
+ (not (and start (eq start end))))
+ (error "Changes should be limited to a single text piece")))
+
+(add-hook 'before-change-functions 'all-before-change-function)
+
+(defun all-after-change-function (from to length)
+ ;; Propagate changes from *All* buffer.
+ (and all-buffer
+ (null all-initialization-p)
+ (let ((buffer (current-buffer))
+ (pos (all-mode-find from)))
+ (if pos
+ (progn
+ (set-buffer all-buffer)
+ (delete-region pos (+ pos length))
+ (save-excursion
+ (goto-char pos)
+ (insert-buffer-substring buffer from to))
+ (set-buffer buffer))))))
+
+(add-hook 'after-change-functions 'all-after-change-function)
+
+;;;###autoload
+(defun all (regexp &optional nlines)
+ "Show all lines in the current buffer containing a match for REGEXP.
+
+If a match spreads across multiple lines, all those lines are shown.
+
+Each line is displayed with NLINES lines before and after, or -NLINES
+before if NLINES is negative.
+NLINES defaults to `list-matching-lines-default-context-lines'.
+Interactively it is the prefix arg.
+
+The lines are shown in a buffer named `*All*'.
+Any changes made in that buffer will be propagated to this buffer."
+ (interactive (list (let* ((default (car regexp-history))
+ (input
+ (read-from-minibuffer
+ (if default
+ (format
+ "Edit lines matching regexp (default `%s'): " default)
+ "Edit lines matching regexp: ")
+ nil nil nil
+ 'regexp-history)))
+ (if (> (length input) 0) input
+ (setcar regexp-history default)))
+ current-prefix-arg))
+ (setq nlines (if nlines (prefix-numeric-value nlines)
+ list-matching-lines-default-context-lines))
+ (setq all-initialization-p t)
+ (let ((first t)
+ (buffer (current-buffer))
+ (prevend nil)
+ (prevstart nil)
+ (prevpos (point-min)))
+ (with-output-to-temp-buffer "*All*"
+ (save-excursion
+ (set-buffer standard-output)
+ (all-mode)
+ (setq all-buffer buffer)
+ (insert "Lines matching ")
+ (prin1 regexp)
+ (insert " in buffer " (buffer-name buffer) ?. ?\n)
+ (insert "--------\n"))
+ (if (eq buffer standard-output)
+ (goto-char (point-max)))
+ (save-excursion
+ (beginning-of-buffer)
+ ;; Find next match, but give up if prev match was at end of buffer.
+ (while (and (not (= prevpos (point-max)))
+ (re-search-forward regexp nil t))
+ (goto-char (match-beginning 0))
+ (beginning-of-line)
+ (setq prevpos (point))
+ (goto-char (match-end 0))
+ (let* ((start (save-excursion
+ (goto-char (match-beginning 0))
+ (forward-line (if (< nlines 0) nlines (- nlines)))
+ (point)))
+ (end (save-excursion
+ (goto-char (match-end 0))
+ (if (> nlines 0)
+ (forward-line (1+ nlines))
+ (forward-line 1))
+ (point)))
+ marker)
+ (cond ((null prevend)
+ (setq prevstart start
+ prevend end))
+ ((> start prevend)
+ (all-insert)
+ (setq prevstart start
+ prevend end))
+ (t
+ (setq prevend end)))))
+ (if prevend
+ (all-insert)))))
+ (setq all-initialization-p nil))
+
+(defun all-insert ()
+ ;; Insert match.
+ (save-excursion
+ (setq marker (make-marker))
+ (set-marker marker prevstart)
+ (set-buffer standard-output)
+ (let ((from (point))
+ to)
+ (insert-buffer-substring buffer prevstart prevend)
+ (setq to (point))
+ (overlay-put (make-overlay from to) 'marker marker)
+ (goto-char from)
+ (while (re-search-forward regexp to t)
+ (overlay-put (make-overlay (match-beginning 0) (match-end 0))
+ 'face 'highlight))
+ (goto-char to)
+ (if (> nlines 0)
+ (insert "--------\n")))))
+
+(provide 'all)
+
+;;; all.el ends here