bug#38502: 27.0.50; minibuffer-scroll-other-window with multiple frames

[martin rudalics]

> C-v and M-v should scroll 'minibuffer-selected-window', but
> C-M-v should scroll the other window from 'minibuffer-selected-window'
> like it does now.  But maybe this should be configurable?
>
> Is there a variable/function with a name like 
'minibuffer-selected-other-window'
> that gives an other window to scroll with C-M-v from the minibuffer or
> from the window defined by 'minibuffer-selected-window'?

'other-window-for-scrolling' tries to dynamically find a window that
shows 'other-window-scroll-buffer'.  So it's the latter we would
probably have to set.

martin