bug#52556: Cannot answer minibuffer question with just one click

[積丹尼 Dan Jacobson]

User cannot answer this minibuffer question,
  How many articles from mail.misc (635 default):
with just one mouse click.

I must hit

   RET (translated from <return>) runs the command exit-minibuffer (found
   in minibuffer-local-map), which is an interactive compiled Lisp
   function in ‘minibuffer.el’.

   It is bound to C-j, RET, <menu-bar> <minibuf> <return>.

   (exit-minibuffer)

   Terminate this minibuffer argument.

Note I have menu-bar turned off.

And even if I have it turned on, one click on the word "default" etc.
would beat poking around in menus.

Also,

   Save file /nibblesford.txt? (y, n, !, ., q, C-r, C-f, d or C-h)

Do allow the user to click on a letter too.