rmrevin\yii\minify\HtmlCompressor::checkInsidePre PHP Method

    private function checkInsidePre($line)
    {
        $inside_pre = true;
        if (strpos($line, '</pre') !== false && strripos($line, '</pre') >= strripos($line, '<pre')) {
            $line = rtrim($line);
            $inside_pre = false;
        }
        return [$line, $inside_pre];
    }