Not tried yet. Wonder if it's got the option to display the size of directories. On the screenshots, the directories are shown with '-' just like the case with the ls.
Do you mean recursing into a directory and summing the file sizes of its contents? exa doesn't do this, sorry, but it's something I've been thinking of adding.
ls actually displays the 'file size' of the directory, which I've left out, as that number has never benefitted me, ever.
