Fix vertical cursor motion when there are overlay strings at EOL.
src/indent.c (Fvertical_motion): Don't consider display strings on overlay strings as display strings on the buffer position we started from. This prevents vertical cursor motion from jumping more than one line when there's an overlay string with a display property at end of line. Reported by Karl Chen <Karl.Chen@quarl.org> in http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00362.html.
Showing with 16 additions and 2 deletions