bug#57423: Completions Buffer requiring window switching or mouse activity

[wilnerthomas]

Using  "M-x COMMAND TAB"  to display minibuffer commands, one gets a 
temporary Completions Buffer that says

Click on a completion to select it

Consequently, one cannot complete or go through the possibilities in the 
minibuffer, 
but am being forced to either switch to it with "C-x o" a couple of times, or 
having
 to use the mouse.

An effective way that improves the frequent minibuffer activity (e.g. icomplete 
lets user
select a completion without having to smitch windows), emacs can automatically 
switch
to the completions buffer so one can get to a possible selection using the 
arrow keys.