    
💡 You need to specify file(s) you want the indent-lint to run
   
    [+] (package-file "ENTRY")         ; One argument with a string
    [+] (files "FILE-1" "FILE-2" ...)  ; All arguments are wildcard patterns

For example,
    
    [+] (files "*.el")

💡 Tip: You can use the command [files] to show all selected files
   
    $ eask files
