[elpa] externals/all ba2295e 1/4: Give every package its own directory in packages/

[Stefan Monnier]

branch: externals/all
commit ba2295e5a5003ba78ed03ae043208313de70e52d
Author: Chong Yidong <cyd@stupidchicken.com>
Commit: Chong Yidong <cyd@stupidchicken.com>

    Give every package its own directory in packages/
    including single-file packages.
---
 all.el | 205 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 205 insertions(+)

diff --git a/all.el b/all.el
new file mode 100644
index 0000000..1a706f6
--- /dev/null
+++ b/all.el
@@ -0,0 +1,205 @@
+;;; all.el --- Edit all lines matching a given regexp
+
+;; Copyright (C) 1985-1987, 1992, 1994, 2011 Free Software Foundation, Inc.
+;; Copyright (C) 1994 Per Abrahamsen
+
+;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
+;; Version: 1.0
+;; 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 are
+;; propagated to the original buffer.
+
+;; You can no longer use mouse-2 to find a match in the original file,
+;; since the default definition of mouse is too 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 are not reflected in the *All* buffer.
+;; - A single change in the *All* buffer must be limited to a single match.
+
+;;; Code: 
+
+(defvar all-mode-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map "\C-c\C-c" 'all-mode-goto)
+    map))
+
+(defvar all-buffer nil)
+(make-variable-buffer-local 'all-buffer)
+
+(define-derived-mode all-mode fundamental-mode "All"
+  "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."
+  (add-hook 'before-change-functions 'all-before-change-function nil 'local)
+  (add-hook 'after-change-functions 'all-after-change-function nil 'local))
+
+(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 'all-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) 'all-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")))
+
+(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
+            (with-current-buffer all-buffer
+              (save-excursion
+                (goto-char pos)
+                 (delete-region pos (+ pos length))
+                (insert-buffer-substring buffer from to)))))))
+
+;;;###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)))
+           (read-string
+            (if default
+                (format 
+                 "Edit lines matching regexp (default `%s'): " default)
+              "Edit lines matching regexp: ")
+            nil 'regexp-history default))
+         current-prefix-arg))
+  (setq nlines (if nlines (prefix-numeric-value nlines)
+                list-matching-lines-default-context-lines))
+  (let ((all-initialization-p t)
+        (buffer (current-buffer))
+       (prevend nil)
+       (prevstart nil)
+       (prevpos (point-min)))
+    (with-output-to-temp-buffer "*All*"
+      (with-current-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
+       (goto-char (point-min))
+       ;; 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))))
+           (cond ((null prevend)
+                  (setq prevstart start
+                       prevend end))
+                 ((> start prevend)
+                  (all-insert prevstart prevend regexp nlines)
+                  (setq prevstart start
+                        prevend end))
+                 (t
+                  (setq prevend end)))))
+       (if prevend
+           (all-insert prevstart prevend regexp nlines))))))
+
+(defun all-insert (start end regexp nlines)
+  ;; Insert match.
+  (let ((marker (copy-marker start))
+        (buffer (current-buffer)))
+    (with-current-buffer standard-output
+      (let ((from (point))
+            to)
+        (insert-buffer-substring buffer start end)
+        (setq to (point))
+        (overlay-put (make-overlay from to) 'all-marker marker)
+        (goto-char from)
+        (while (re-search-forward regexp to t)
+          (put-text-property (match-beginning 0) (match-end 0)
+                             'face 'match))
+        (goto-char to)
+        (if (> nlines 0)
+            (insert "--------\n"))))))
+
+(provide 'all)
+
+;;; all.el ends here