Index: typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js
===================================================================
--- typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js	(révision 6405)
+++ typo3/sysext/rtehtmlarea/htmlarea/htmlarea.js	(copie de travail)
@@ -64,6 +64,8 @@
  */
 HTMLArea.agt = navigator.userAgent.toLowerCase();
 HTMLArea.is_opera  = (HTMLArea.agt.indexOf("opera") != -1);
+// Some operations require bug fixes provided by Opera 10 (Presto 2.2)
+HTMLArea.is_opera9 = HTMLArea.is_opera && HTMLArea.agt.indexOf("Presto/2.1") != -1;
 HTMLArea.is_ie = (HTMLArea.agt.indexOf("msie") != -1) && !HTMLArea.is_opera;
 HTMLArea.is_safari = (HTMLArea.agt.indexOf("webkit") != -1);
 HTMLArea.is_gecko  = (navigator.product == "Gecko") || HTMLArea.is_opera;
Index: typo3/sysext/rtehtmlarea/htmlarea/plugins/UndoRedo/undo-redo.js
===================================================================
--- typo3/sysext/rtehtmlarea/htmlarea/plugins/UndoRedo/undo-redo.js	(révision 6405)
+++ typo3/sysext/rtehtmlarea/htmlarea/plugins/UndoRedo/undo-redo.js	(copie de travail)
@@ -168,7 +168,7 @@
 			// Insert a bookmark
 		if (this.editor.getMode() == "wysiwyg" && this.editor.isEditable()) {
 			var selection = this.editor._getSelection();
-			if ((HTMLArea.is_gecko && !HTMLArea.is_opera) || (HTMLArea.is_ie && selection.type.toLowerCase() != "control")) {
+			if ((HTMLArea.is_gecko && !HTMLArea.is_opera9) || (HTMLArea.is_ie && selection.type.toLowerCase() != "control")) {
 					// Catch error in FF when the selection contains no usable range
 				try {
 						// Work around IE8 bug: can't create a range correctly if the selection is empty and the focus is not on the editor window