Re: no good way to highlight rectangle while region is highlighted

[Richard Stallman]

    I agree with you that it is low level.  At the same time, I think it
    would make a far better user interface for highlighting the rectangle
    I think the ease of the user seeing the rectangle would be much
    better.

I do not see why.  Could you explain?

    I think it is worth pointing out (again) that the ?box? feature of
    faces _already_ supports having the _horizontal_ lines take no extra
    space.  It is a bit strange that it supports this but does not support
    having the _vertical_ lines take no extra space.

It does sound like a natural extension, but it might be hard to
implement since it involves changing the display code.  (Do you want
to implement this and debug it?)  And I still don't see how it relates.

    Using some of the code in sense-region.el,
    I am now showing both the region and rectangle at once.

Why do you want to?

    I think it is useful (and is the way Emacs has worked already for
    decades) to have both rectangle and region commands available at all
    times.  In this case, because Emacs doesn't know whether you are going
    to use a region or rectangle command next, it is helpful to be able to
    show them both.

I would not want that as a normal feature.
I think it would look confusing.  I would rather have a command
to switch between region and rectangle.