Nautilus does not display anything if the user selects "Star" as caption for for the grid view.
This is because the star caption quark is not handled by nautilus_file_get_string_attribute_q, which causes us to set NULL for the caption label.
As a more definitive solution, implement the display of star emblems for the grid view instead of relying on captions. Also remove the option to select star captions.
Fixes #2842 (closed)