bug#22973: 25.1.50; OSX -- right-divider-width / bottom-divider-width -- not working.

[martin rudalics]

> I am unable to set the right-divider-width or left-divider-width
> greater than 0 as a frame-parameter in Emacs for OSX (10.6.8)
> --with-ns.  The parameters always remain a value of zero.  I had never
> tried setting those parameters prior to today, so I'm not sure if it
> ever worked correctly.

I don't recall whether this ever worked.  As far as I remember, at the
time I implemented dividers the GNUstep build was broken and I never
tried on OSX.

The function supposed to do the work is ns_draw_window_divider in
nsterm.m.  Can you have a look whether that function gets called in the
first place, what its arguments are, why it has no effect and why the
parameter is apparently never set (or reset)?

Thanks, martin