foreach my $field (@fields) {
my $data = $field->as_string( $subfield_letters, $facet->{sep} );
unless ( grep { /^$data$/ } @used_datas ) {
unless ( grep { /^\Q$data\E$/ } @used_datas ) {
push @used_datas, $data;
$facets_counter->{ $facet->{idx} }->{$data}++;
}
-