17   my $opentag = $config->{'moredata_opentag'} ? $config->{'moredata_opentag'} : '';
     18   die "MoreData requires an open tag: $!" unless ($opentag);

     32   my $substrings_aref = _retrieve_strings($str, $opentag, $closetag, $dataname);
     33   unless (scalar($substrings_aref)) { # no stringrefs returned
     34     die "cannot extract substrings from string: $!";
     35   }

     41   my $datasep_cfg = $config->{'moredata_datasep'};
     42   length($datasep_cfg) or die "The data separation string must be configured: $!";
     43   my $hashsep_cfg = $config->{'moredata_hashsep'} || '';
     44   length($hashsep_cfg) or die "The hash separation string must be configured: $!";