Re: change cursor type when idle

[Richard Stallman]

    The reason it is tied into cua-mode in the first place is that I
    needed to have separate cursor styles for rectangle marking and the
    global-mark feature.  

As a historical explanation, that makes sense, but I don't see why
this is an argument against installing a general cursor-style control
feature.  The real point is that we should verify that it serves CUA's
needs before installing it.

    In principle, I fully agree that cua-mode should be completely
    separated into different packages, but unfortunately, the features
    provided by cua-mode need some rather deep interactions, so it
    is hard to actually split them (more than I have already done).

We shouldn't lump together the question of splitting out the CUA
with the question of splitting apart other CUA features.