bug#21468: 24.5; When next-line (visual) crosses overlay with before-string="\n" point goes to column 0

[Eli Zaretskii]

> Date: Sat, 10 Oct 2015 09:37:43 -0400
> From: Noam Postavsky <npostavs@users.sourceforge.net>
> Cc: 21468@debbugs.gnu.org
> 
> >> - On a truncated line with the overlay, move-end-of-line skips to the
> >> next line. (I tried to avoid this by only adding the stretched space
> >> when it's going to be visible. But that just made things worse
> >> (looping in the display engine))
> >>
> >> - When at the end of line, next-line goes to the end-of-line instead
> >> of staying on the same column.
> >
> > Are these caused by the 'cursor' property, i.e. do not happen if that
> > property is not used?
> 
> They're not caused by the 'cursor' property, although it makes the 2nd
> case more visually surprising.
> 
> >
> > In any case, I'd appreciate a short self-contained test case for each
> > of these two issues, as I'm not sure I understand what's going on.
> >
> 
> Using attached 21468-overlay.el
> 
> The 1st case:
> 
>    emacs -Q -l 21468-overlay.el -f 21468-test-eol-skip
> 
> then hit C-e. Point lands at the end of line 19 instead of the end of
> line 18 where it started.

Fixed.