bug#26513: [External] : bug#26513: 25.2; pop-up-frames and *Completions* buffer

[Drew Adams <drew.adams@oracle.com>]

> > In either case
> >  >>> I have a `display-buffer-alist` entry that does all kinds of funny
> >  >>> things for *Completions* ;-)
> >  >> Please post it here.
> >  >
> >  > Sorry, top secret.
> >
> > Maybe we really should recommend Drew's package for people setting
> > 'pop-up-frames' to t then.
> 
> Didn't Drew say at some point that breaks Emacs 27 and later?

1. I don't recommend generally recommending to
   use my code for this.  See my reply to Martin.

2. What I said wrt Emacs 27+ is that Emacs 27+
   breaks use of my setup (not the other way
   around).  In particular, although I manage
   which frame gets the focus, that control
   apparently gets overridden by something in
   Emacs 27+.

   (I think Stefan mentioned something similar,
   but he said it started with Emacs 26 (?), and
   I too have some problems that were introduced
   in Emacs 26.)

   Icicles allows use of a minibuffer along with
   with changing selected window and focused
   frame during minibuffer input (including with
   recursive minibuffers).  E.g., you can switch
   among windows and do things there while the
   minibuffer waits for input.  This requires
   control by the particular commands involved
   (commands that read from the minibuffer but
   also commands bound to minibuffer keys that
   result in interactions in other windows).