void GetNumbers(List<int> numbers, int count)
{
   ...
}

private static IEnumerable<string> Split(string text)
{
    StringBuffer buffer = new StringBuffer();
    CharEnumerator enumerator = text.GetEnumerator();
    Func<char, bool> matches = c => c == enumerator.Current;
    while (enumerator.MoveNext())
    {
        if (matches('['))
        {
            yield return buffer.Discard();

            bool escaped = false;
            do
            {
                buffer.Append(enumerator.Current);
                if ((matches(']') || matches(' ')) && !escaped)
                {
                    yield return buffer.Discard();
                    break;
                }
                else if (matches('"'))
                {
                    escaped = !escaped;
                }
            }
            while (enumerator.MoveNext());
        }
        else
        {
            buffer.Append(enumerator.Current);
        }
    }

    if (!buffer.IsEmpty)
    {
        yield return buffer.Discard();
    }
}