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plugins/system/languagecode/index.html
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plugins/system/languagecode/index.html
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<!DOCTYPE html><title></title>
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; Joomla! Project
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; Copyright (C) 2005 - 2013 Open Source Matters. All rights reserved.
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; License GNU General Public License version 2 or later; see LICENSE.txt, see LICENSE.php
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; Note : All ini files need to be saved as UTF-8
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PLG_SYSTEM_LANGUAGECODE="System - Language Code"
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PLG_SYSTEM_LANGUAGECODE_FIELD_DESC="Changes the language code used for the <em>%s</em> language"
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PLG_SYSTEM_LANGUAGECODE_FIELDSET_DESC="Changes the language code for the generated HTML document. Example of use: One has installed the fr-FR language pack and wants the Search Engines to recognise the page as aimed at French-speaking Canada. Add the tag 'fr-CA' to the corresponding field for 'fr-FR' to resolve this."
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PLG_SYSTEM_LANGUAGECODE_FIELDSET_LABEL="Language codes"
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PLG_SYSTEM_LANGUAGECODE_XML_DESCRIPTION="Provides the ability to change the language code in the generated HTML document to improve SEO.<br />The fields will appear when the plugin is enabled and saved.<br />More information at <a href="_QQ_"http://www.w3.org/TR/xhtml1/#docconf"_QQ_">W3.org</a> "
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; Joomla! Project
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; Copyright (C) 2005 - 2013 Open Source Matters. All rights reserved.
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; License GNU General Public License version 2 or later; see LICENSE.txt, see LICENSE.php
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; Note : All ini files need to be saved as UTF-8
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PLG_SYSTEM_LANGUAGECODE="System - Language Code"
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PLG_SYSTEM_LANGUAGECODE_XML_DESCRIPTION="Provides ability to change the language code in the generated HTML document to improve SEO"
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plugins/system/languagecode/language/en-GB/index.html
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plugins/system/languagecode/language/en-GB/index.html
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<!DOCTYPE html><title></title>
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1
plugins/system/languagecode/language/index.html
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plugins/system/languagecode/language/index.html
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<!DOCTYPE html><title></title>
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149
plugins/system/languagecode/languagecode.php
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plugins/system/languagecode/languagecode.php
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<?php
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/**
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* @package Joomla.Plugin
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* @subpackage System.languagecode
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE.txt
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*/
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defined('_JEXEC') or die;
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/**
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* Language Code plugin class.
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*
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* @package Joomla.Plugin
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* @subpackage Content.languagecode
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* @since 2.5
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*/
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class PlgSystemLanguagecode extends JPlugin
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{
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/**
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* Plugin that change the language code used in the <html /> tag
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*
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* @since 2.5
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*/
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public function onAfterRender()
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{
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// Use this plugin only in site application
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if (JFactory::getApplication()->isSite())
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{
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// Get the response body
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$body = JResponse::getBody();
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// Get the current language code
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$code = JFactory::getDocument()->getLanguage();
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// Get the new code
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$new_code = $this->params->get($code);
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// Replace the old code by the new code in the <html /> tag
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if ($new_code)
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{
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// Replace the new code in the HTML document
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$patterns = array(
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chr(1) . '(<html.*\s+xml:lang=")(' . $code . ')(".*>)' . chr(1) . 'i',
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chr(1) . '(<html.*\s+lang=")(' . $code . ')(".*>)' . chr(1) . 'i',
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);
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$replace = array(
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'${1}' . strtolower($new_code) . '${3}',
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'${1}' . strtolower($new_code) . '${3}'
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);
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}
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else
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{
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$patterns = array();
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$replace = array();
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}
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// Replace codes in <link hreflang="" /> attributes
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preg_match_all(chr(1) . '(<link.*\s+hreflang=")([0-9a-z\-]*)(".*\s+rel="alternate".*/>)' . chr(1) . 'i', $body, $matches);
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foreach ($matches[2] as $match)
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{
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$new_code = $this->params->get(strtolower($match));
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if ($new_code)
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{
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$patterns[] = chr(1) . '(<link.*\s+hreflang=")(' . $match . ')(".*\s+rel="alternate".*/>)' . chr(1) . 'i';
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$replace[] = '${1}' . $new_code . '${3}';
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}
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}
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preg_match_all(chr(1) . '(<link.*\s+rel="alternate".*\s+hreflang=")([0-9A-Za-z\-]*)(".*/>)' . chr(1) . 'i', $body, $matches);
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foreach ($matches[2] as $match)
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{
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$new_code = $this->params->get(strtolower($match));
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if ($new_code)
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{
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$patterns[] = chr(1) . '(<link.*\s+rel="alternate".*\s+hreflang=")(' . $match . ')(".*/>)' . chr(1) . 'i';
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$replace[] = '${1}' . $new_code . '${3}';
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}
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}
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JResponse::setBody(preg_replace($patterns, $replace, $body));
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}
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}
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/**
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* @param JForm $form The form to be altered.
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* @param array $data The associated data for the form.
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*
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* @return boolean
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* @since 2.5
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*/
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public function onContentPrepareForm($form, $data)
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{
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// Ensure that data is an object
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$data = (object) $data;
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// Check we have a form
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if (!($form instanceof JForm))
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{
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$this->_subject->setError('JERROR_NOT_A_FORM');
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return false;
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}
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// Check we are manipulating a valid form.
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$app = JFactory::getApplication();
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if ($form->getName() != 'com_plugins.plugin'
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|| isset($data->name) && $data->name != 'plg_system_languagecode'
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|| empty($data) && !$app->getUserState('plg_system_language_code.edit')
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)
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{
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return true;
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}
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// Mark the plugin as being edited
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$app->setUserState('plg_system_language_code.edit', $data->name == 'plg_system_languagecode');
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// Get site languages
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if ($languages = JLanguage::getKnownLanguages(JPATH_SITE))
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{
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// Inject fields into the form
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foreach ($languages as $tag => $language)
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{
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$form->load('
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<form>
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<fields name="params">
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<fieldset
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name="languagecode"
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label="PLG_SYSTEM_LANGUAGECODE_FIELDSET_LABEL"
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description="PLG_SYSTEM_LANGUAGECODE_FIELDSET_DESC"
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>
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<field
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name="'.strtolower($tag).'"
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type="text"
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description="' . htmlspecialchars(JText::sprintf('PLG_SYSTEM_LANGUAGECODE_FIELD_DESC', $language['name']), ENT_COMPAT, 'UTF-8') . '"
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translate_description="false"
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label="' . $tag . '"
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translate_label="false"
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size="7"
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filter="cmd"
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/>
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</fieldset>
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</fields>
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</form>
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');
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}
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}
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return true;
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}
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}
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22
plugins/system/languagecode/languagecode.xml
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22
plugins/system/languagecode/languagecode.xml
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<?xml version="1.0" encoding="utf-8"?>
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<extension version="3.1" type="plugin" group="system">
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<name>plg_system_languagecode</name>
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<author>Joomla! Project</author>
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<creationDate>November 2011</creationDate>
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<copyright>Copyright (C) 2005 - 2013 Open Source Matters. All rights reserved.</copyright>
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<license>GNU General Public License version 2 or later; see LICENSE.txt</license>
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<authorEmail>admin@joomla.org</authorEmail>
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<authorUrl>www.joomla.org</authorUrl>
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<version>3.0.0</version>
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<description>PLG_SYSTEM_LANGUAGECODE_XML_DESCRIPTION</description>
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<files>
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<filename plugin="languagecode">languagecode.php</filename>
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<filename>index.html</filename>
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<folder>language</folder>
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</files>
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<languages>
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<language tag="en-GB">language/en-GB/en-GB.plg_system_languagecode.ini</language>
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<language tag="en-GB">language/en-GB/en-GB.plg_system_languagecode.sys.ini</language>
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</languages>
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<config />
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</extension>
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