bash-completion: add swapon specifiers to completion

No space after device name is not entirely right, but that's better than
missing argument completions.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

bash-completion/swapon

@@ -25,18 +25,30 @@ _swapon_module()
 			COMPREPLY=( $(compgen -P "$prefix" -W "$OUTPUT" -S ',' -- $realcur) )
 			return 0
 			;;
-		'-U')
+		'-U'|'UUID=')
 			local UUIDS
 			UUIDS="$(lsblk -nrp -o FSTYPE,UUID | awk '$1 ~ /swap/ { print $2 }')"
 			COMPREPLY=( $(compgen -W "$UUIDS" -- $cur) )
 			return 0
 			;;
-		'-L')
+		'-L'|'LABEL=')
 			local LABELS
 			LABELS="$(lsblk -nrp -o FSTYPE,LABEL | awk '$1 ~ /swap/ { print $2 }')"
 			COMPREPLY=( $(compgen -W "$LABELS" -- $cur) )
 			return 0
 			;;
+		'PARTUUID=')
+			local PARTUUIDS
+			PARTUUIDS="$(lsblk -nrp -o FSTYPE,PARTUUID | awk '$1 ~ /swap/ { print $2 }')"
+			COMPREPLY=( $(compgen -W "$PARTUUIDS" -- $cur) )
+			return 0
+			;;
+		'PARTLABEL=')
+			local PARTLABELS
+			PARTLABELS="$(lsblk -nrp -o FSTYPE,PARTLABEL | awk '$1 ~ /swap/ { print $2 }')"
+			COMPREPLY=( $(compgen -W "$PARTLABELS" -- $cur) )
+			return 0
+			;;
 		'-h'|'--help'|'-V'|'--version')
 			return 0
 			;;
@@ -55,6 +67,8 @@ _swapon_module()
 				--raw
 				--bytes
 				--verbose
+				-L
+				-U
 				--help
 				--version"
 			COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) )
@@ -63,7 +77,8 @@ _swapon_module()
 	esac
 	local DEVS
 	DEVS="$(lsblk -nrp -o FSTYPE,NAME | awk '$1 ~ /swap/ { print $2 }')"
-	COMPREPLY=( $(compgen -W "$DEVS" -- $cur) )
+	compopt -o nospace
+	COMPREPLY=( $(compgen -fW "$DEVS LABEL= UUID= PARTLABEL= PARTUUID=" -- $cur) )
 	return 0
 }
 complete -F _swapon_module swapon