bug#60359: 29.0.60; completion-auto-select set to t skips first argument when completing files

[Juri Linkov]

>> Please omit the message only in case when the completions buffer is
>> shown, then the user will see there are more completions.  But after
>> typing e.g. `M-x man TAB` that otherwise does nothing the user should see
>> the message. IOW, in case of `completion-auto-help` please use the same
>> condition `(and (eq this-command last-command) completion-auto-help)` as
>> used to pop up the completions.
>
> You mean this, right?
>
> diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
> index 6e42296e7ba..7a720cf2c0a 100644
> --- a/lisp/minibuffer.el
> +++ b/lisp/minibuffer.el
> @@ -1474,7 +1474,10 @@ completion--do-completion
>                (if (and (eq this-command last-command)
>                completion-auto-help)
>                    (minibuffer-completion-help beg end))
>                (completion--done completion 'exact
> -                                (unless expect-exact
> +                                (unless (or expect-exact
> +                                            (and completion-auto-select
> +                                                 (eq this-command 
> last-command)
> +                                                 completion-auto-help))
>                                    "Complete, but not unique"))))
>
>              (minibuffer--bitset completed t exact))))))))

Yep, this looks like the right thing to do.