fish-shell/share/functions/__fish_use_subcommand.fish

function __fish_use_subcommand -d "Test if a non-switch argument has been given in the current commandline"
	set -l cmd (commandline -poc)
	set -e cmd[1]
	for i in $cmd
		switch $i
			case '-*'
				continue
		end
		return 1
	end
	return 0
end