Re: Stop frames stealing eachothers' minibuffers!

[Gregory Heytings]

> > Now type C-x 8 RET SPACE RET.  This sucks the open minibuffer over to 
> > F2, despite the C-r operation having nothing to do with the suspended 
> > operation in the minibuffer.
>
> This is normal again, C-x 8 RET starts an operation which uses the 
> minibuffer, and the cursor leaves the buffer in which you are and moves 
> to the miniwindow.  As explained above, when an operation which 
> activates a minibuffer is used on a frame while other minibuffers are 
> active on another frame, they are moved to that frame.  I honestly can't 
> see what's wrong with this.
>
> IMO the only other reasonable behavior is to make sure that _all_ 
> minibuffers are moved from frame F1 to frame F2 whenever one switches 
> from a frame F1 to a frame F2.  This is not feasible with Emacs 21-27, 
> and still not feasible with Emacs 28.

I wrote too fast here: this is feasible with Emacs 28 (by setting 
minibuffer-follows-selected-frame to t, which is its default value), but 
there is no way to get the previous behavior of Emacs 21-27.