Mini Shell

_mkswap_module()
{
	local cur prev OPTS
	COMPREPLY=()
	cur="${COMP_WORDS[COMP_CWORD]}"
	prev="${COMP_WORDS[COMP_CWORD-1]}"
	case $prev in
		'-p'|'--pagesize')
			COMPREPLY=( $(compgen -W "bytes" -- $cur) )
			return 0
			;;
		'-L'|'--label')
			COMPREPLY=( $(compgen -W "label" -- $cur) )
			return 0
			;;
		'-v'|'--swapversion')
			COMPREPLY=( $(compgen -W "1" -- $cur) )
			return 0
			;;
		'-U'|'--uuid')
			COMPREPLY=( $(compgen -W "$(uuidgen -r)" -- $cur) )
			return 0
			;;
		'-h'|'--help'|'-V'|'--version')
			return 0
			;;
	esac
	case $cur in
		-*)
			OPTS="--check --force --pagesize --lock --label --swapversion --uuid --verbose --version --help"
			COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) )
			return 0
			;;
	esac
	compopt -o bashdefault -o default
	COMPREPLY=( $(compgen -W "$(lsblk -pnro name)" -- $cur) )
	return 0
}
complete -F _mkswap_module mkswap