Add language to CKlink

custom.module

/* 
 * alter cklink to add language 
*/
function custom_ckeditor_link_autocomplete_alter(&$results, &$string){
  if ($string !== '') {
		$types = ckeditor_link_get_types();
		$results = array();
		foreach ($types as $type) {
			$func = $type['module'] .'_ckeditor_link_'. $type['type'] .'_autocomplete';
			if($type['type']=="node"){
				$func="ckeditor_link_ckeditor_link_node_autocomplete_custom";
			}			
			if (function_exists($func)) {
				$results += $func($string);
				if (count($results) > 10) {
					break;
				}
			}
		}
	}
}

function ckeditor_link_ckeditor_link_node_autocomplete_custom($string) {
	$matches = array();
	$node_types = array_keys(array_filter(variable_get('ckeditor_link_autocomplete_node_types', array('- any -' => '- any -'))));
	if (count($node_types)) {
  	//we assume i18n is enabled
		global $language;
		$db_or = db_or();
		$db_or->condition('n.language', 'und');
		$db_or->condition('n.language', $language->language);
		$query = db_select('node', 'n')
		->fields('n', array('nid', 'title','language'))
		->condition('n.title', '%'. db_like($string) .'%', 'LIKE')
		->condition($db_or)
		->orderBy('n.title')
		->orderBy('n.type')
		->range(0, 10)
		->addTag('node_access');
		if (!in_array('- any -', $node_types)) {
			$query->condition('n.type', $node_types, 'IN');
		}
		$result = $query->execute();
		foreach ($result as $node) {
			$matches['node/'. $node->nid] = "TAAL:".$node->language." ".drupal_get_path_alias("node/".$node->nid);
		}
	}
	return $matches;
}