bug#34622: Find file prompt should indicate sole completion by appending a blank

[積丹尼 Dan Jacobson]

EZ> Which command did that?  "C-x C-f" shows just the directory, so
EZ> there's no question of completions with the initial prompt.  The
EZ> situation you describe is thus not entirely clear.
>> 
>> $ touch /tmp/zzz #new plain file
>> C-x C-f /tmp/zzz

EZ> But in this case, the first TAB already says "Sole completion", as you
EZ> wanted...

Nope: See, needed two tabs!:

 C-x C-f [find-file]
 / [self-insert-command]
 t [self-insert-command]
 m [self-insert-command]
 <tab> [minibuffer-complete]
 z [self-insert-command]
 z [self-insert-command]
 <tab> [minibuffer-complete]
 <tab> [minibuffer-complete]
 C-h l [view-lossage]