bug#33870: 27.0.50; xref-goto-xref not configurable

[martin rudalics]

> Yes, still not perfect.  Maybe then use just one alist entry with more
> possible values whose names clearly indicate where they are applied like
>
> below - bottom
> above - top
> left - leftmost
> right - rightmost
>
> The first column is relative to the selected window,
> the second column is relative to the main window.

This will confuse us and users.  We should try to unify them somehow
in the sense that terms like below/bottom can be used interchangeably
- as you asked for up/above and down/below in 'window-in-direction'.

martin