Classic "touch" has always bothered me: touch -a FOO updates FOO's last-access time. touch -m FOO updates FOO's last-modification time. touch -a -m FOO updates both times.
Logically, then, "touch FOO", with neither -a nor -m, should update neither time. But it doesn't. It updates both times. I know why this is so -- among other things, it's historical practice and we can't change the above behavior. Still, there ought to be a way for "touch" to update neither time, via a GNU extension. This would make the behavior of GNU touch more orthogonal. This is why I have long been thinking of adding a new option that would mean "neither -a nor -m". Admittedly it's low priority.
