[Xapian-discuss] add_posting(): term position significance - line or offset?

[Henry]

> Summary: it could be implemented just by changing the search part of  
> the code, but for good performance we might need to fiddle with the  
> index structures, too.

Thanks for the detailed response, Richard (also to Olly).

In the event of the index structures changing, would this imply a  
backwards incompatibility with older databases?

Presumably this would be the case, but Flint appears to be quite flexible...

Regards
Henry