function __fish_exercism_no_subcommand -d 'Test if exercism has yet to be given the subcommand'
    for i in (commandline -xpc)
        if contains -- $i demo debug configure fetch restore submit unsubmit tracks download help
            return 1
        end
    end
    return 0
end

complete -c exercism -s c -l config -d 'path to config file [$EXERCISM_CONFIG_FILE, $XDG_CONFIG_HOME]'
complete -c exercism -s v -l verbose -d "turn on verbose logging"
complete -c exercism -s h -l help -d "show help"
complete -c exercism -s v -l version -d "print the version"
complete -f -n __fish_exercism_no_subcommand -c exercism -a configure -d "Writes config values to a JSON file"
complete -f -n __fish_exercism_no_subcommand -c exercism -a debug -d "Outputs useful debug information"
complete -f -n __fish_exercism_no_subcommand -c exercism -a download -d "Downloads a solution given the ID of the latest iteration"
complete -f -n __fish_exercism_no_subcommand -c exercism -a fetch -d "Fetches the next unsubmitted problem in each track"
complete -f -n __fish_exercism_no_subcommand -c exercism -a list -d "Lists the available problems for a language track, given its ID"
complete -f -n __fish_exercism_no_subcommand -c exercism -a open -d "Opens exercism.io on given problem"
complete -f -n __fish_exercism_no_subcommand -c exercism -a restore -d "Downloads the most recent iteration for each of your solutions on exercism.io"
complete -f -n __fish_exercism_no_subcommand -c exercism -a skip -d "Skips a problem given a track ID and problem slug"
complete -f -n __fish_exercism_no_subcommand -c exercism -a status -d "Fetches information about your progress with a given language track"
complete -f -n __fish_exercism_no_subcommand -c exercism -a submit -d "Submits a new iteration to a problem on exercism.io"
complete -f -n __fish_exercism_no_subcommand -c exercism -a tracks -d "Lists the available language tracks"
complete -f -n __fish_exercism_no_subcommand -c exercism -a upgrade -d "Upgrades the CLI to the latest released version"
complete -f -n __fish_exercism_no_subcommand -c exercism -a help -d "show help"