bug#39389: 27.0.60; A couple of bugs messing with minibuffer completion of /sudo::

[Michael Albinus]

Jimmy Yuen Ho Wong <wyuenho@gmail.com> writes:

Hi,

> Bug 1:
>
> If `ido-enable-tramp-completion` is set to `nil`, it's impossible to
> open a file as root with `ido-find-file`. Here are the reproduction steps:
>
> 1. In Terminal, $ /Applications/MacPorts/Emacs.app/Contents/MacOS/Emacs -Q
>
> 2. M-x ido-mode
>
> 3. M-x set-variable ido-enable-tramp-completion RET nil RET
>
> 4. C-x C-f //sudo:
>
> 5. Minibuffer prompt will show `File file: /sudo:/ [No match]` and
> there's no way to remove the auto completed / in the end.

I've tried this one. I've got exactly the same minibuffer contents. BUT
a simple backspace has removed everything, and it has shown just '/' .

This looks OK to me. I'm using

GNU Emacs 28.0.50 (build 32, x86_64-pc-linux-gnu, GTK+ Version 3.24.12, cairo 
version 1.16.0)
 of 2020-01-28

if this matters, but I don't believe this makes a difference.

For the other two problems I cannot say anything; I don't know the
packages.

Best regards, Michael.