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_lsblk_module()
{
	local cur prev OPTS
	COMPREPLY=()
	cur="${COMP_WORDS[COMP_CWORD]}"
	prev="${COMP_WORDS[COMP_CWORD-1]}"
	case $prev in
		'-e'|'--exclude'|'-I'|'--include')
			local MAJOR I J
			MAJOR=''
			for I in /sys/dev/block/*; do
				J=${I##*/}
				MAJOR="$MAJOR ${J%%:*}"
			done
			# FIXME: how to append to a string with compgen?
			compopt -o nospace
			COMPREPLY=( $(compgen -W "$MAJOR" -S ',' -- $cur) )
			return 0
			;;
		'-o'|'--output')
			# FIXME: how to append to a string with compgen?
			OUTPUT="NAME KNAME MAJ:MIN FSTYPE MOUNTPOINT
				LABEL UUID PARTLABEL PARTUUID RA RO RM
				MODEL SIZE STATE OWNER GROUP MODE
				ALIGNMENT MIN-IO OPT-IO PHY-SEC LOG-SEC
				ROTA SCHED RQ-SIZE TYPE DISC-ALN
				DISC-GRAN DISC-MAX DISC-ZERO WSAME WWN
				RAND PKNAME HCTL TRAN REV VENDOR"
			compopt -o nospace
			COMPREPLY=( $(compgen -W "$OUTPUT" -S ',' -- $cur) )
			return 0
			;;
	esac
	case $cur in
		-*)
			OPTS="-a --all
				-b --bytes
				-d --nodeps
				-D --discard
				-e --exclude
				-I --include
				-f --fs
				-h --help
				-i --ascii
				-m --perms
				-l --list
				-n --noheadings
				-o --output
				-P --pairs
				-r --raw
				-s --inverse
				-t --topology
				-S --scsi
				-h --help
				-V --version"
			COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) )
			return 0
			;;
	esac
	local DEVS
	DEVS=''; while read dev; do DEVS+="$dev " ; done < <(lsblk -pnro name)
	COMPREPLY=( $(compgen -W "$DEVS" -- $cur) )
	return 0
}
complete -F _lsblk_module lsblk