X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/2cdd4f8845ab5519a15f3c603d9ab48f7e1a91bd..8677dea3af74e8253bb85a00beb9dd4975946d63:/lisp/image-file.el

diff --git a/lisp/image-file.el b/lisp/image-file.el
index 11676021af..3084c4a1c2 100644
--- a/lisp/image-file.el
+++ b/lisp/image-file.el
@@ -1,16 +1,17 @@
 ;;; image-file.el --- support for visiting image files
 ;;
-;; Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+;; Copyright (C) 2000, 2001, 2002, 2003, 2004,
+;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 ;;
 ;; Author: Miles Bader <miles@gnu.org>
 ;; Keywords: multimedia
 
 ;; 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
@@ -18,9 +19,7 @@
 ;; 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:
 
@@ -38,7 +37,7 @@
 
 ;;;###autoload
 (defcustom image-file-name-extensions
-  '("png" "jpeg" "jpg" "gif" "tiff" "tif" "xbm" "xpm" "pbm" "pgm" "ppm" "pnm")
+  '("png" "jpeg" "jpg" "gif" "tiff" "tif" "xbm" "xpm" "pbm" "pgm" "ppm" "pnm" "svg")
   "*A list of image-file filename extensions.
 Filenames having one of these extensions are considered image files,
 in addition to those matching `image-file-name-regexps'.
@@ -118,6 +117,8 @@ the command `insert-file-contents'."
 	      (create-image data nil t))
 	     (props
 	      `(display ,image
+			yank-handler
+			(image-file-yank-handler nil t)
 			intangible ,image
 			rear-nonsticky (display intangible)
 			;; This a cheap attempt to make the whole buffer
@@ -135,6 +136,25 @@ the command `insert-file-contents'."
 	  (setq truncate-lines t))))
     rval))
 
+;; We use a yank-handler to make yanked images unique, so that
+;; yanking two copies of the same image next to each other are
+;; recognized as two different images.
+(defun image-file-yank-handler (string)
+  "Yank handler for inserting an image into a buffer."
+  (let ((len (length string))
+	(image (get-text-property 0 'display string)))
+    (remove-text-properties 0 len yank-excluded-properties string)
+    (if (consp image)
+	(add-text-properties 0
+			     (or (next-single-property-change 0 'image-counter string)
+				 (length string))
+			     `(display
+			       ,(cons (car image) (cdr image))
+			       yank-handler
+			       ,(cons 'image-file-yank-handler '(nil t)))
+			     string))
+    (insert string)))
+
 (put 'image-file-handler 'safe-magic t)
 (defun image-file-handler (operation &rest args)
   "Filename handler for inserting image files.
@@ -182,5 +202,5 @@ Image files are those whose name has an extension in
 
 (provide 'image-file)
 
-;;; arch-tag: 04cafe36-f7ba-4c80-9f47-4cb656520ce1
+;; arch-tag: 04cafe36-f7ba-4c80-9f47-4cb656520ce1
 ;;; image-file.el ends here