At 02:31 8/12/00 -0500, Tom Lane wrote:
>
>How about:
>
>Signature: 12-byte sequence "PGBCOPY\n\377\r\n\0" (detects newline
>replacements, dropped nulls, dropped high bits, parity changes);
>
>Integer layout field: int32 constant 0x01020304 in source's byte order.
>

How about a CRC? ;-P


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