lib.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <https://www.gnu.org/licenses/>.

/**
 * Used to save and restore image correctly
 *
 * @copyright 2010-2011 Hon Wai, Lau
 * @author Hon Wai, Lau <lau65536@gmail.com>
 * @license https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @package qtype_formulas
 */
function qtype_formulas_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options=[]) {
    global $CFG;
    require_once($CFG->libdir . '/questionlib.php');
    question_pluginfile($course, $context, 'qtype_formulas', $filearea, $args, $forcedownload, $options);
}