diff --git a/lib/ace/editor.js b/lib/ace/editor.js
index ef9b0e8a..a32ff85e 100644
--- a/lib/ace/editor.js
+++ b/lib/ace/editor.js
@@ -412,6 +412,11 @@ var Editor =function(renderer, session) {
         var mode = session.getMode();
 
         var cursor = this.getCursorPosition();
+        var transform = mode.transformInput(session.getState(cursor.row), this, session, text);
+        
+        if (transform)
+            text = transform.text;
+        
         text = text.replace("\t", this.session.getTabString());
 
         // remove selected text
@@ -427,12 +432,19 @@ var Editor =function(renderer, session) {
 
         this.clearSelection();
 
+        var start         = cursor.column;
         var lineState     = session.getState(cursor.row);
         var shouldOutdent = mode.checkOutdent(lineState, session.getLine(cursor.row), text);
         var line          = session.getLine(cursor.row);
         var lineIndent    = mode.getNextLineIndent(lineState, line.slice(0, cursor.column), session.getTabString());
         var end           = session.insert(cursor, text);
-
+        
+        if (transform && transform.selection) {
+            this.selection.setSelectionRange(
+                new Range(cursor.row, start + transform.selection[0],
+                          cursor.row, start + transform.selection[1]));
+        }
+        
         var lineState = session.getState(cursor.row);
 
         // TODO disabled multiline auto indent
@@ -600,8 +612,13 @@ var Editor =function(renderer, session) {
 
         if (this.selection.isEmpty())
             this.selection.selectLeft();
+        
+        var session = this.session;
+        var selection = this.getSelectionRange();
+        var state = session.getState(selection.start.row);
+        var range = session.getMode().transformRemove(state, this, session, selection);
 
-        this.session.remove(this.getSelectionRange());
+        this.session.remove(range);
         this.clearSelection();
     };
 
diff --git a/lib/ace/mode/text.js b/lib/ace/mode/text.js
index d0a3e495..70a3739c 100644
--- a/lib/ace/mode/text.js
+++ b/lib/ace/mode/text.js
@@ -150,7 +150,7 @@ var Mode = function() {
             this.$modes[this.$embeds[i]] = new mapping[this.$embeds[i]]();
         }
         
-        var delegations = ['toggleCommentLines', 'getNextLineIndent', 'checkOutdent', 'autoOutdent'];
+        var delegations = ['toggleCommentLines', 'getNextLineIndent', 'checkOutdent', 'autoOutdent', 'transformInput', 'transformRemove'];
 
         for (var i = 0; i < delegations.length; i++) {
             (function(scope) {
@@ -178,6 +178,14 @@ var Mode = function() {
         
         return defaultHandler ? defaultHandler.apply(this, args) : undefined;
     };
+    
+    this.transformInput = function(state, editor, session, text) {
+        return false;
+    };
+    
+    this.transformRemove = function(state, editor, session, range) {
+        return range;
+    };
 
 }).call(Mode.prototype);