_lctl()
{
	local cur prev words cword

	COMPREPLY=()
	# allow different versions of bash_completion to work
	if declare -F _init_completion > /dev/null; then
		# this provides more functionality, but is only in v2.x
		_init_completion || return
	else
		# this is compatible with both v1.3 and v2.x
		_get_comp_words_by_ref -n : cur prev words cword
	fi

	if [[ "$cword" == "1" ]]; then
		COMPREPLY=( $( compgen -W '$(lctl --list-commands |
					     grep -v '^=')' -- "$cur" ) )
		return 0
	fi

	case "${words[1]}" in
	set_param|list_param|get_param)
		local filter="s/=$//"
		[[ "${words[1]}" == "set_param" ]] && filter="/[^=/]$/d"
		mapfile -t COMPREPLY < <(
		    lctl list_param -F "${cur#[\"\']}*" 2>/dev/null |
		    sed -e "$filter" -e 's#/$#.#' \
			-e "s#^${cur//\*/[^.]*}#$cur#"
		    )
		compopt -o nospace

		return 0
		;;
	esac
} &&
complete -F _lctl lctl