Changed ISOLINUX config detection function to load from a list inside a variable

config/grub/config/grub.cfg

@@ -80,6 +80,8 @@ set pager=1
 read
 }
 
+# FIXME Make an automatic override for BTRFS directories instead of copypasting with a "@/" in front of every element
+
 # Default list of GRUB possible directories. The @/... entries are for cases where the BTRFS filesystem is being used
 set grub_dirs="boot grub grub2 boot/grub boot/grub2 @/boot @/grub @/grub2 @/boot/grub @/boot/grub2"
 # Default list of GRUB possible config files prefixes
@@ -99,6 +101,7 @@ function try_user_grub_config {
 		fi
 	done
 }
+
 function search_grub {
 	echo -n "Attempting to load grub.cfg from '${1}' devices"
 	for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
@@ -111,9 +114,12 @@ function search_grub {
 	echo # Insert newline
 }
 
+# Default list of ISOLINUX possible directories. The @/... entries are for cases where the BTRFS filesystem is being used
+set isolinux_dirs="'' /boot /EFI /boot/EFI /@ /@/boot /@/boot/EFI /@/EFI"
+
 function try_isolinux_config {
 	set root="${1}"
-	for dir in '' /boot /EFI /boot/EFI /@ /@/boot /@/boot/EFI /@/EFI; do
+	for dir in ${isolinux_dirs}; do
 		if [ -f "${dir}"/isolinux/isolinux.cfg ]; then
 			syslinux_configfile -i "${dir}"/isolinux/isolinux.cfg
 		elif [ -f "${dir}"/syslinux/syslinux.cfg ]; then
@@ -125,6 +131,7 @@ function try_isolinux_config {
 		fi
 	done
 }
+
 function search_isolinux {
 	echo "\nAttempting to parse iso/sys/extlinux config from '${1}' devices"
 	for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
@@ -136,6 +143,7 @@ function search_isolinux {
 	done
 	echo # Insert newline
 }
+
 function try_bootcfg {
 	try_user_grub_config "${1}"
 	try_isolinux_config "${1}"