Localised keyboard layout Grub2

01_keyboard_layout.sh

#!/bin/sh -e
# /etc/grub.d/01_keyboard_layout.sh
# ^-Put this file here.
# and make it executable:
# chmod +x /etc/grub.d/01_keyboard_layout.sh
#
# update-grub
# ..and finally you've a localised keyboard layout in Grub2
# (... inside the 'normal.mod' Grub; However the rescue shell *suprise* is not effected)
#
# Hmm I wonder why files like this aren't included by default in grub2?

grub_DirLayouts=/boot/grub/layouts

mkdir -p $grub_DirLayouts

# Cut off first part of $LANG, that is for example "de_DE.utf8"
GRUB_LANG=$( echo $LANG | cut -d_ -f1 )

# Generate '/boot/grub/layouts/de.gkb
grub_localLayoutFile=$grub_DirLayouts/$GRUB_LANG.gkb
if test -f 	$grub_localLayoutFile
 then echo      "Using keyboard map $grub_localLayoutFile."		>&2
 else echo "Generating keyboard map $grub_localLayoutFile."		>&2
      ckbcomp $GRUB_LANG	|	grub-mklayout -o $grub_localLayoutFile
fi
cat <<-EOF

	insmod keylayouts
	keymap $GRUB_LANG
	
	# Note: keymap does not affect 'console' so insert keyboards
	terminal_input --append at_keyboard
	terminal_input --append usb_keyboard
	
	terminal_input --remove console
	
	EOF
# Based on 'Re: Grub2 deutsche Tastatur' https://debianforum.de/forum/viewtopic.php?p=1176078#p1176078