Fixed bug where hasUndo() would return wrong answer

changelog.txt

@@ -2,6 +2,7 @@ Version 3.4.3 (2011-??-??)
 	Fixed bug where table size inputs were to small for values with size units.
 	Fixed bug where table cell/row size input values were not validated.
 	Fixed bug where menu item line-height would be set to wrong value by external styles.
+	Fixed bug where hasUndo() would return wrong answer.
 Version 3.4.2 (2011-04-07)
 	Added new 'paste_text_sticky_default' option to paste plugin, enables you to set the default state for paste as plain text.
 	Added new autoresize_bottom_margin option to autoresize plugin that enables you to add an extra margin at the bottom. Patch contributed by Andrew Ozz.

jscripts/tiny_mce/classes/Editor.js

@@ -3172,8 +3172,7 @@
 
 							if (!t.undoManager.typing) {
 								t.undoManager.beforeChange();
-								t.undoManager.typing = true;
-								t.undoManager.add();
+								addUndo();
 							}
 
 							// Select next word when ctrl key is used in combo with delete
@@ -3222,8 +3221,7 @@
 					// If key isn't shift,ctrl,alt,capslock,metakey
 					if ((keyCode < 16 || keyCode > 20) && keyCode != 224 && keyCode != 91 && !t.undoManager.typing) {
 						t.undoManager.beforeChange();
-						t.undoManager.add();
-						t.undoManager.typing = true;
+						addUndo();
 					}
 				});
 
@@ -3232,7 +3230,7 @@
 						addUndo();
 				});
 			}
-			
+
 			// Bug fix for FireFox keeping styles from end of selection instead of start.
 			if (tinymce.isGecko) {
 				function getAttributeApplyFunction() {

jscripts/tiny_mce/themes/advanced/editor_template_src.js

@@ -936,10 +936,10 @@
 		},
 
 		_updateUndoStatus : function(ed) {
-			var cm = ed.controlManager;
+			var cm = ed.controlManager, um = ed.undoManager;
 
-			cm.setDisabled('undo', !ed.undoManager.hasUndo() && !ed.typing);
-			cm.setDisabled('redo', !ed.undoManager.hasRedo());
+			cm.setDisabled('undo', !um.hasUndo() && !um.typing);
+			cm.setDisabled('redo', !um.hasRedo());
 		},
 
 		_nodeChanged : function(ed, cm, n, co, ob) {