core/misc/form.autosave.js           |    2 +-
 core/modules/ckeditor/js/ckeditor.js |   15 +++++++++++++++
 core/modules/editor/editor.module    |    1 +
 core/modules/editor/js/editor.js     |    6 ++++++
 4 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/core/misc/form.autosave.js b/core/misc/form.autosave.js
index 95b3e29..e53d121 100644
--- a/core/misc/form.autosave.js
+++ b/core/misc/form.autosave.js
@@ -17,7 +17,7 @@ Drupal.behaviors.formAutoSave = {
           // Attach garlic.
           .garlic({
             inputs: 'input[type!=file][type!=hidden][type!=submit][type!=button], textarea, select',
-            events: [ 'textInput', 'input', 'change', 'keypress', 'paste', 'focus' ],
+            events: [ 'editorSerializedAfterChange', 'textInput', 'input', 'change', 'keypress', 'paste', 'focus' ],
             expires: 86400 * 30,
             conflictManager: {
               enabled: false
diff --git a/core/modules/ckeditor/js/ckeditor.js b/core/modules/ckeditor/js/ckeditor.js
index b8318be..6d67c9f 100644
--- a/core/modules/ckeditor/js/ckeditor.js
+++ b/core/modules/ckeditor/js/ckeditor.js
@@ -29,6 +29,21 @@ Drupal.editors.ckeditor = {
       }
     }
     return !!editor;
+  },
+
+  onChange: function (element, callback) {
+    var editor = CKEDITOR.dom.element.get(element).getEditor();
+    if (editor) {
+      var changed = function () {
+        callback(editor.getData());
+      };
+      // @todo Make this more elegant once http://dev.ckeditor.com/ticket/9794
+      // is fixed.
+      editor.on('key', changed);
+      editor.on('paste', changed);
+      editor.on('afterCommandExec', changed);
+    }
+    return !!editor;
   }
 
 };
diff --git a/core/modules/editor/editor.module b/core/modules/editor/editor.module
index 6db6210..8603793 100644
--- a/core/modules/editor/editor.module
+++ b/core/modules/editor/editor.module
@@ -74,6 +74,7 @@ function editor_library_info() {
     'dependencies' => array(
       array('system', 'jquery'),
       array('system', 'drupal'),
+      array('system', 'drupal.debounce'),
       array('system', 'drupalSettings'),
       array('system', 'jquery.once'),
     ),
diff --git a/core/modules/editor/js/editor.js b/core/modules/editor/js/editor.js
index 32da290..160bd69 100644
--- a/core/modules/editor/js/editor.js
+++ b/core/modules/editor/js/editor.js
@@ -97,6 +97,12 @@ Drupal.behaviors.editor = {
 Drupal.editorAttach = function (field, format) {
   if (format.editor) {
     Drupal.editors[format.editor].attach(field, format);
+
+    // Serialize changes in the editor back to the textarea, at most every .5 s.
+    Drupal.editors[format.editor].onChange(field, Drupal.debounce(function () {
+      Drupal.editorDetach(field, format, 'serialize');
+      $(field).trigger('editorSerializedAfterChange');
+    }, 500));
   }
 };