heap_fetch

From 7.1.3 -> 7.2, heap_fetch changed from:

extern void heap_fetch(Relation relation, Snapshot snapshot, \
HeapTuple tup, Buffer *userbuf);

to

extern void heap_fetch(Relation relation, Snapshot snapshot, \
HeapTuple tup, Buffer *userbuf, IndexScanDesc iscan);

Can any of the core people give me a quick 101 on what the IndexScanDesc
var is now used for / how to reference it / where to learn more about it
in the code?

Thanks all.

- Brandon

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c: 646-456-5455 h: 201-798-4983
b. palmer, bpalmer@crimelabs.net pgp:crimelabs.net/bpalmer.pgp5