shithub: trueawk

ref: fcc0e7b0f8eb8bdaf909b03f5b4d0f0833cf4292
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
}