public unsafe void Write(StringSpan word, ref StringSpan buffer)
{
var len = word.Length;
var buf = buffer.Pointer;
if (_nonFirst)
{
*buf++ = '_';
++len;
}
else
{
_nonFirst = true;
}
var p = word.Pointer;
* buf++ = char.ToLower(*p);
var size = sizeof(char) * (word.Length - 1);
Buffer.MemoryCopy(p + 1, buf, size, size);
buffer = buffer.Slice(len);
}
