bug#16403: 24.3.50; Rectangular selection visually disturbing

[Bastien]

Daniel Colascione <dancol@dancol.org> writes:

> On 01/09/2014 02:15 AM, Ivan Kalyaev wrote:
>> When I press <C-x SPS> to start vertical selection lines of text shift to the
>> right because empty selection is represented with a line symbol.
>>
>> It looked like font rendering glitch at first. The jerky motion is 
>> disturbing.
>>
>> How do you think the visual experience could be made better?
>>
>> For comparison, vim selects the starting character right away.
>
> I usually use Emacs in a window system. In a tty, yes, this behavior
> looks bad. We should do something about it.

I suggest these fixes (see patch attached):

- don't display an after-string overlay in tty;

- Let C-x SPC sends this message to the user:
  "Mark active (rectangle mode)"
  instead of just "Mark active"

Let me know what you think.

rect.el.patch
Description: Text Data

-- 
 Bastien