Re: the war on trailing whitespace

The only language I know of where the presence of whitespace on blank
lines matters is make(1).  Even there, it's subtle.  It's okay to have
(using "cat -e" syntax)

foo : bar$
	command$
$
	command$

But there's a difference between

foo : bar$
	$

which specifies an empty command and will therefore not use a default rule, and

foo : bar$
$

which does not specify any command and so will use a default rule if one exists.


(Of course, you can also get [ \t]\n inside an arbitrary binary file, too.)