bug#6400: I want to stay with a sibling window

[martin rudalics]

> A small patch to make the selected window one of the siblings when the
> selected window is deleted.
>
> I do not understand the code so I am not sure this is correct. Martin?

        if (EQ (FRAME_SELECTED_WINDOW (f), selected_window))

This conditional checks only whether f is the selected frame.  You
probably want to make sib the frame's selected window whenever you
delete the frame's selected window.

       if (!EQ (XWINDOW (window)->frame, selected_frame))
-       Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window)));
+       Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window)), Qnil);

And you almost certainly want to tell us what this is meant for ;-)

martin