cue export -o bools.yaml bools.cue
cue import -o bools2.cue bools.yaml
cmp bools.cue bools2.cue

-- bools.cue --
x: [
	"n",
	"N",
	"no",
	"No",
	"NO",
	"y",
	"Y",
	"yes",
	"Yes",
	"YES",
	"off",
	"Off",
	"OFF",
	"on",
	"On",
	"ON",
]