$datadir =~ s!/$!!; $plugin_dir =~ s!/$!!; $static_dir =~ s!/$!!;
# Fix depth to take into account datadir's path
-$depth and $depth += ($datadir =~ tr[/][]) - 1;
+$depth += ($datadir =~ tr[/][]) - 1 if $depth;
# Global variable to be used in head/foot.{flavour} templates
$path_info = '';