1<?php
2
3namespace dokuwiki\plugin\config\core\Setting;
4
5/**
6 * Class setting_numericopt
7 */
8class SettingNumericopt extends SettingNumeric {
9    // just allow an empty config
10    protected $pattern = '/^(|[-]?[0-9]+(?:[-+*][0-9]+)*)$/';
11
12    /**
13     * @inheritdoc
14     * Empty string is valid for numericopt
15     */
16    public function update($input) {
17        if($input === '') {
18            if($input == $this->local) return false;
19            $this->local = $input;
20            return true;
21        }
22
23        return parent::update($input);
24    }
25}
26