> > Based on other feedback I've modified it to only pass highbit
> > characters >= 160.

	Characters 128..159 were stripped so that people using terminals
	that handled them as control characters (which should not be many)
	could still rely on fmt to strip control characters.

	Whether that is a worthy goal is open to discussion.

	Comparing fmt with cat is not entirely fair - fmt already strips
	control characters.

	Probably the best option is to have 'raw' and 'cooked' options,
	selected by a flag. If so, the question is which should be the
	default...