my $all = {};
$eml->each_part(\&eml_index_offs_i, $all, 0, 1);
# top-level of multipart, BODY[0] not allowed (nz-number)
delete $all->{0};
my $all = {};
$eml->each_part(\&eml_index_offs_i, $all, 0, 1);
# top-level of multipart, BODY[0] not allowed (nz-number)
delete $all->{0};