Escape to CLI (was: Re: [PATCH] broken ESC navigation if authentication is used)

[Andrei Borzenkov <arvidjaar@gmail.com>]

10.06.2015 19:29, Florian Kaiser пишет:
> Hi,
>
> we are using grub2 with authentication enabled and multiple submenus.
> Unfortunately it is not possible to return to a previous menu with ESC without
> triggering a superuser password prompt. This is not the desired behavior in
> my opinion.
> I attached a patch to this email, which removes the password prompt when
> pressing escape.
>

Actually I could not even reproduce it at first. The problem is, new 
submenu opens new context and unless `superusers' is exported as soon as 
we enter submenu no authentication is required at all (including 
entering CLI).

I am not sure whether this is intentional, but this is definitely 
unexpected. And due to complete lack of description of variable scoping 
in GRUB it is also undocumented.

Options are

- simply document variable scoping and mention it in authentication 
description

- propagate superusers to submenus, rely on normal export in nested 
config. Still needs documentation what export actually does.

- export superusers by default and document it in description.