diff --git a/lib/ace/document.js b/lib/ace/document.js
index 0aba7bd4..b11f604e 100644
--- a/lib/ace/document.js
+++ b/lib/ace/document.js
@@ -511,15 +511,17 @@ var Document = function(text, mode) {
         args.push.apply(args, lines);
         this.$lines.splice.apply(this.$lines, args);
 
+        var delta = {
+            action: "insertText",
+            range: new Range(row, 0, row + lines.length, 0),
+            text: lines.join(nl) + nl
+        };
         if (!fromUndo && this.$undoManager) {
             var nl = this.$getNewLineCharacter();
-            this.$deltas.push({
-                action: "insertText",
-                range: new Range(row, 0, row + lines.length, 0),
-                text: lines.join(nl) + nl
-            });
+            this.$deltas.push(delta);
             this.$informUndoManager.schedule();
         }
+        this._dispatchEvent("changeDelta", { data: delta });
     },
 
     this.$insert = function(position, text, fromUndo) {
@@ -571,14 +573,16 @@ var Document = function(text, mode) {
             };
         }
 
+        var delta = {
+            action: "insertText",
+            range: Range.fromPoints(position, end),
+            text: text
+        };
         if (!fromUndo && this.$undoManager) {
-            this.$deltas.push({
-                action: "insertText",
-                range: Range.fromPoints(position, end),
-                text: text
-            });
+            this.$deltas.push(delta);
             this.$informUndoManager.schedule();
         }
+        this._dispatchEvent("changeDelta", { data: delta });
 
         return end;
     };
@@ -623,13 +627,13 @@ var Document = function(text, mode) {
         if (range.isEmpty())
             return;
 
+        var delta = {
+            action: "removeText",
+            range: range.clone(),
+            text: this.getTextRange(range)
+        };
         if (!fromUndo && this.$undoManager) {
-            var nl = this.$getNewLineCharacter();
-            this.$deltas.push({
-                action: "removeText",
-                range: range.clone(),
-                text: this.getTextRange(range)
-            });
+            this.$deltas.push(delta);
             this.$informUndoManager.schedule();
         }
 
@@ -645,6 +649,8 @@ var Document = function(text, mode) {
             this.$lines.splice(firstRow, lastRow - firstRow + 1, row);
         else
             this.$lines.splice(firstRow, lastRow - firstRow + 1, "");
+
+        this._dispatchEvent("changeDelta", { data: delta });
         return range.start;
     };
     
@@ -729,9 +735,9 @@ var Document = function(text, mode) {
                 deleteRange.start.column = j;
                 deleteRange.end.column = j + 1;
             } else {
-	            deleteRange.start.column = 0;
-	            deleteRange.end.column = j;
-	        }
+                deleteRange.start.column = 0;
+                deleteRange.end.column = j;
+            }
             if (i == range.start.row)
                 range.start.column -= deleteRange.end.column - deleteRange.start.column;
             if (i == range.end.row)