-F flag allows to see the types of file and distinguish directories. Is there a way to add a functionality to distinguish an empty directory?
This can't be done with
ls (at least, as far as I am aware), but you can find empty directories using
find . -type d -empty
If the depth matters to you, with GNU
find . -maxdepth 1 -type d -empty
Just in case, to find the non-empty ones:
find . -mindepth 1 -maxdepth 1 -not -empty -type d