protected function onFormatText(string &$text): void
    {
        $lines = preg_split("/\r\n|\n|\r/", $text);
        $result = [];

        $lastEmptyLinesCount = 0;
        $hasFoundNonEmptyLines = false;

        foreach ($lines as $line) {
            if (($this->textFormatOptions & TextFormatOptions::TRIM) !== 0) {
                $line = trim($line);
            }
            if (($this->textFormatOptions & TextFormatOptions::COMPACT) !== 0) {
                $line = preg_replace('/\s+/', ' ', $line);
            }

            if ($line === '') {
                if (($this->textFormatOptions & TextFormatOptions::COMPACT_LINES) !== 0 && $lastEmptyLinesCount > 0) {
                    continue;
                }
                if (($this->textFormatOptions & TextFormatOptions::TRIM_LINES) !== 0 && !$hasFoundNonEmptyLines) {
                    continue;
                }

                $lastEmptyLinesCount++;
            } else {
                $lastEmptyLinesCount = 0;
                $hasFoundNonEmptyLines = true;
            }

            $result[] = $line;
        }

        if (($this->textFormatOptions & TextFormatOptions::TRIM_LINES) !== 0 && $lastEmptyLinesCount > 0) {
            // Trim the last empty lines (we did not know until now that those were at the end).
            array_splice($result, -$lastEmptyLinesCount);
        }

        $text = implode("\r\n", $result);
    }