Bug#737475: Seems to be a bug when $feature_menuentry_id is blank (or not y)

[ael]

A little more information.

I added 

echo "Debugging: menuentry_id_option="$menuentry_id_option
echo "Debugging: feature_menuentry_id="$feature_menuentry_id

to grub.cfg and thus found that both were blank (or at least
whitespace).

When

menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-43ae47ae-86fc-43a6-9661-dcf030179dc0' {
        load_video
        insmod gzio
        insmod part_msdos
    ....
}
is encountered later, I don't see a conditional to stop the
$menu_id_option 'whatever'
appearing which seems to be the bug. But I haven't looked very hard.

I don't see any alternative menuentry for when $menu_id_option is
empty, so this really does look like an oversight.