friendica_2021.01_tupambae_.../mod/filerm.php

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<?php
function filerm_content(&$a) {
if(! local_user()) {
killme();
}
$term = unxmlify(trim($_GET['term']));
$item_id = (($a->argc > 1) ? intval($a->argv[1]) : 0);
logger('filerm: tag ' . $term . ' item ' . $item_id);
if($item_id && strlen($term))
file_tag_unsave_file(local_user(),$item_id,$term);
if(x($_SESSION,'return_url'))
goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
killme();
}