Re: submenu fails to see variables

[Dimitri John Ledkov]

On Tue, Sep 7, 2021 at 10:30 AM Olaf Hering <olaf@aepfle.de> wrote:
>
> On Mon, Sep 06, Vladimir 'phcoder' Serbinenko wrote:
>
> > Le lun. 6 sept. 2021 à 12:49, Olaf Hering <olaf@aepfle.de> a écrit :
> >     For some reason global variables are not seen in a submenu {} section.
> >     Does anyone happen to know why this behavior is useful?
> > You need to export variable to make it visible in submenu
>
> Thanks. This was less than obvious. I did not expect a command named 'export' 
> in the context of grub.
>
> The documentation needs to be updated to state what the difference between 
> 'set key=val', 'export key=val' and plain 'key=val' actually is.

I have seen somewhere that some distros applied a patch to simply
export all variables always; or like not to create new contexts for
submenus, to keep the variable space the same.

Imho keeping variable space global, and exported by default seems to
lead to least surprises. But it is a behaviour change/break.