Re: Empty Overlay with before-string or after-string property still treated as empty

[martin rudalics]

> If you an overlay has equal endpoints, and a before-string or after-string 
property set, the face
> property does not affect the before-string or after-string.  I found this 
while modifying hl-line to
> properly handle the last line in a buffer.

I'd rather not use zero length overlays with before- and after-strings,
compare the thread "before- and after-string issues" starting with:

http://lists.gnu.org/archive/html/emacs-pretest-bug/2005-05/msg00176.html

I found additional problems since that but forgot about most of them.

> P.S.  It would also be nice if hl-line-mode was changed to properly handle 
the last line in a
> buffer. ;)

Might be caused by redisplay, compare

http://lists.gnu.org/archive/html/emacs-pretest-bug/2006-01/msg00347.html

although I'm not sure whether our problems are related.