shithub: trueawk

ref: 7d1848cfa6b7b3bb9a7c851339626982198a57bc
dir: /bugs-fixed/decr-NF.awk/

BEGIN {
	$0 = "a b c d e f"
	print NF
	OFS = ":"
	NF--
	print $0
	print NF
	NF++
	print $0
	print NF
}