The non-field processor behaviour is is convert the corresponding
queries into a search for the unprefixed terms. This yields pretty
surprising results so I decided to generate a query that would match
the terms (i.e. none with that prefix) generated for an empty header.
---
lib/regexp-fields.cc
David Bremner writes:
> +if (str.size () == 0)
> + return Xapian::Query(Xapian::Query::OP_AND_NOT,
> + Xapian::Query::MatchAll,
> + Xapian::Query (Xapian::Query::OP_WILDCARD,
> term_prefix));
> +
Full disclosure, this is a pretty expensi
