+ }
+
+ # Force at least a to be displayed so that browsers
+ # will format the table cell (e.g. borders etc).
+ if (!scalar @{ $col->{CELL_ROWS} }) {
+ push @{ $col->{CELL_ROWS} }, { 'data' => ' ' };
+ } elsif ((1 == scalar @{ $col->{CELL_ROWS} }) && (!defined $col->{CELL_ROWS}->[0]->{data} || ($col->{CELL_ROWS}->[0]->{data} eq ''))) {
+ $col->{CELL_ROWS}->[0]->{data} = ' ';
+ }