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Are you sure that GRUB2 saves the config as a binary? I think on my Arch update-grub generates /boot/grub/grub.cfg which looks somewhat similar to good old menu

• digi_owl 11y ago
  The binary part may be a bit harsh. But if i recall correctly grub2 compiles one config into another, and the result is topped with a "do not edit!" warning.
  • lloeki 11y ago
    If you poke into the resulting config, you'll notice that it's just convenience†, and you could write the file by hand. † in the same way that autotools is "convenience" saving you from writing makefiles and configure scripts.
    • semi-extrinsic 11y ago
      Yes you can write the file by hand, but what you write is going to get overwritten on the next system update to grub2.
      • vetinari 11y ago
        However, it is not due to fault of grub2, but due to distro-specific scripts that "helpfully" generate grub config.