bufferHelper("\n\r", "\n", "\r");
    bufferHelper("\r", "\r");
    bufferHelper("\n\n", "\n", "\n");
    bufferHelper("\r\n\r\n", "\r\n", "\r\n");
    bufferHelper("\r\r", "\r", "\r");
    bufferHelper("\ra\r\n\n\r\r", "\r", "a\r\n", "\n", "\r", "\r");
    bufferHelper("no newlines at all", "no newlines at all");
    bufferHelper("two lines\nbut no newline at end", "two lines\n", "but no newline at end");
    bufferHelper(

    bufferHelper("\n\r", "\n", "\r");
    bufferHelper("\r", "\r");
    bufferHelper("\n\n", "\n", "\n");
    bufferHelper("\r\n\r\n", "\r\n", "\r\n");
    bufferHelper("\r\r", "\r", "\r");
    bufferHelper("\ra\r\n\n\r\r", "\r", "a\r\n", "\n", "\r", "\r");
    bufferHelper("no newlines at all", "no newlines at all");
    bufferHelper("two lines\nbut no newline at end", "two lines\n", "but no newline at end");
    bufferHelper(

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