Reverted/fixed some incorrect changes.

extensions/smarty/ViewRenderer.php

@@ -268,6 +268,6 @@ class ViewRenderer extends BaseViewRenderer
     public function aliasHandler($type, $name, &$content, &$modified, Smarty $smarty)
     {
         $file = Yii::getAlias($name);
-        return $file !== false && is_file($file) ? $file : false;
+        return is_file($file) ? $file : false;
     }
 }

framework/base/ArrayableTrait.php

@@ -63,14 +63,15 @@ trait ArrayableTrait
      * information. For example, depending on the privilege of the current application user,
      * you may return different sets of visible fields or filter out some fields.
      *
-     * The default implementation of this method returns the public object member variables.
+     * The default implementation of this method returns the public object member variables indexed by themselves.
      *
      * @return array the list of field names or field definitions.
      * @see toArray()
      */
     public function fields()
     {
-        return array_keys(Yii::getObjectVars($this));
+        $fields = array_keys(Yii::getObjectVars($this));
+        return array_combine($fields, $fields);
     }
 
     /**

framework/console/controllers/HelpController.php

@@ -329,12 +329,12 @@ class HelpController extends Controller
                 // show as integer to avoid confusion
                 $defaultValue = (int) $defaultValue;
             }
-            if ($type === 'boolean') {
+            if (strncmp($type, 'bool', 4) === 0) {
                 $type = 'boolean, 0 or 1';
             }
             $doc = "$type (defaults to " . var_export($defaultValue, true) . ")";
         } elseif (trim($type) !== '') {
-            if ($type === 'boolean') {
+            if (strncmp($type, 'bool', 4) === 0) {
                 $type = 'boolean, 0 or 1';
             }
             $doc = $type;