18     protected $ns;  variable in helper_plugin_searchns
25         $this->ns = $this->getNsFromConfig();
35         if (!is_null($this->ns)) {
36             return $this->ns;
39         $ns = [];
42         if (empty($config)) return $ns;
49                 return $ns;
51             $ns[trim($n[1])] = rtrim(trim($n[0], ':'));
55             $ns = array_merge([$this->getLang('all label') => ''], $ns);
57             $ns[$this->getLang('all label')] = '';
60         return $ns;
66      * @param string $ns
69     public function filterByACL($ns)  argument
71         if ($ns === '') return true; // all is always allowed
72         return auth_quickaclcheck($ns . ':*') >= AUTH_READ;
90         $ns = $INPUT->str('ns');
93         $query = urldecode($query) . ($ns ? " @$ns" : '');
104             } elseif (!$ns) {
146         foreach ($namespaces as $label => $ns) {
147             $res[$ns] = array_filter(
149                 static fn($page) => strpos($page, $ns . ':') === 0,
153             if (!empty($res[$ns])) {
155                 $res[$ns] = array_merge([$label => self::SEARCHNS_HEADING], $res[$ns]);
157                 $results = array_diff_key($results, $res[$ns]);
163         foreach ($original as $ns) {
164             if (!empty($res[$ns])) {
165                 $all = array_merge($all, $res[$ns]);