[Bug 1175127] Re: grub2 does not propagate variable to submenu

[Andreas Heinlein]

As you can see from the discussion here:

https://lists.gnu.org/archive/html/grub-devel/2012-03/msg00050.html

this is currently by design. A submenu opens a new 'context' in grub
terms, and when you exit the context (go back to the main menu),
everything within the submenu context is lost. I personally do not like
this, too.

If you really need this functionality, someone has posted a patch in the
above thread. I don't know if it works, but you could give it a try.

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https://bugs.launchpad.net/bugs/1175127

Title:
  grub2 does not propagate variable to submenu

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Problem:

  grub2 does not propagate variables to submenu -> menuentry. My defined variables defined in 40_custom and properly generated into grub.cfg after update-grub are not set up in submenu. Variables have content only on menuentry level but not in submenu. According to manual the content of variables should be propagated into submenu as well. 
     set variable=something  #or/and 
     export variable=something
  Does not work even if they are settled on the beginning of the grub.cfg
  some of the variables defined in 

  
  How to reproduce problem:
  just put some set variable=something in 40_custom , echo variable=$variable in submenu -> menuentry , update-grub and reboot.  (I did not try grub-emu)

  
  apt-cache policy grub2
  grub2:
    Installed: 2.00-13ubuntu3
    Candidate: 2.00-13ubuntu3
    Version table:
   *** 2.00-13ubuntu3 0
          500 http://localhost/ubuntu/ raring/universe amd64 Packages
          500 http://uk.archive.ubuntu.com/ubuntu/ raring/universe amd64 Packages

  
  Description:	Ubuntu 13.04
  Release:	13.04
  Codename:	raring

  
  Kind Regards,
  M.

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