$column_data{dunning_description} =
qq|<td><a href="dn.pl?action=print_dunning&format=pdf&media=screen&| .
qq|dunning_id=| . E($ref->{dunning_id}) .
- join(map({ "&${_}=" . E($form->{$_}) } qw(login password callback))) .
+ join("", map({ "&${_}=" . E($form->{$_}) } qw(login password callback))) .
qq|">| . H($ref->{dunning_description}) . qq|</a></td>|;
} else {
$column_data{dunning_description} = qq|<td> </td>|;
$column_data{invnumber} =
qq|<td><a href="| . ($ref->{invoice} ? "is.pl" : "ar.pl" ) .
qq|?action=edit&id=| . H($ref->{id}) .
- join(map({ "&${_}=" . E($form->{$_}) } qw(login password callback))) .
+ join("", map({ "&${_}=" . E($form->{$_}) } qw(login password callback))) .
qq|">| . H($ref->{invnumber}) . qq|</a></td>|;
map { print "$column_data{$_}\n" } @column_index;