bug#24364: 25.1; C-x C-x in rectangle-mark-mode leaves corner out

[Alan Third <alan@idiocy.org>]

On Sun, Sep 04, 2016 at 05:03:16PM +0200, Marie-Christine Jones wrote:
> 
> 
> When point is at the end of the (*scratch*-) buffer and
> rectangle-mark-mode is activated, C-x C-x cycles through all corners but
> the bottom left one, in this order (starting in the top right corner):
> bottom right, top left, bottom right, top right.  I think it should go
> to the bottom left corner as well.

It looks as though the problem occurs when the point is on the left
side of the rectangle, and also at the end of a line.

Because it’s an actual position in the buffer (not beyond EOL)
rectangle--point-crutches is nil, and therefore
rectangle--place-cursor is a no‐op.

Unfortunately it looks like when the overlay is put in place the
cursor jumps to the end of it, even though (point) still reports the
EOL without overlay.

My guess is that the overlay behaviour is correct and rect.el needs to
work around that.
-- 
Alan Third