bug#42307: bug#42347: Feature request: Visual block attribute for overlays

[Eli Zaretskii <eliz@gnu.org>]

> Date: Tue, 14 Jul 2020 15:45:01 +0000
> From: Gregory Heytings via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> > and \n is the newline, so it isn't on the same line.
> >
> 
> It is, but it's the last character of the line.  With the current default 
> behavior it is displayed, there is one more blank character after each 
> line, just type C-x = on that character.

My point is that \n cannot be "leading space" of a line.  It is the
end of the previous line.

> > And finally, what about stretches of whitespace generated by the 'space' 
> > display properties?
> 
> I don't know, and I'm not sure I fully understand the question.

The point is that the result of displaying these properties is exactly
the same as tabs and spaces.  So excluding them would surprise users.