\@ret;
}
+# always returns a scalar value
sub int_val ($$) {
my ($doc, $col) = @_;
- my $val = $doc->get_value($col) or return; # undefined is '' in Xapian
+ my $val = $doc->get_value($col) or return undef; # undef is '' in Xapian
sortable_unserialise($val) + 0; # PV => IV conversion
}