protected function collapseCell($cell, $column)
    {
        //compress a complex cell
        if (is_array($cell)) {
            $cell = isset($cell['data']) ? $cell['data'] : '';
        }

        if (!$this->format->html) {
            $cell = strip_tags($cell);
        }

        // Escape chars that conflice with delimiters
        if (!empty($this->format->escape)) {
            $escapeables = array($this->format->left, $this->format->right);
            $escapeables = array_filter(array_unique($escapeables));
            foreach ($escapeables as $find) {
                $cell = str_replace($find, $this->format->escape . $find, $cell);
            }
        }

        return $this->format->left . $cell . $this->format->right;
    }