first commit

administrator/modules/mod_custom/mod_custom.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * @package     Joomla.Administrator
+ * @subpackage  mod_custom
+ *
+ * @copyright   (C) 2009 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+\defined('_JEXEC') or die;
+
+use Joomla\CMS\Helper\ModuleHelper;
+use Joomla\CMS\HTML\HTMLHelper;
+use Joomla\CMS\Plugin\PluginHelper;
+
+if ($params->def('prepare_content', 1)) {
+    PluginHelper::importPlugin('content');
+    $module->content = HTMLHelper::_('content.prepare', $module->content, '', 'mod_custom.content');
+}
+
+// Replace 'images/' to '../images/' when using an image from /images in backend.
+$module->content = preg_replace('*src\=\"(?!administrator\/)images/*', 'src="../images/', $module->content);
+
+require ModuleHelper::getLayoutPath('mod_custom', $params->get('layout', 'default'));