grubby/boot/isos.cfg.d/fedora.cfg

# Fedora Grub Config

set isopath_fedora="${isopath}/fedora"
export isopath_fedora

# abuse for to check for existence
for isofile in ${isopath_fedora}/Fedora-*.iso; do
  if [ ! -e "$isofile" ]; then break; fi

submenu "Fedora >" --class fedora {

for isofile in ${isopath_fedora}/Fedora-*.iso; do
  if [ ! -e "$isofile" ]; then break; fi

  regexp \
    --set 1:isoname \
    --set 2:variant \
    --set 3:arch \
    --set 4:version \
    "^${isopath_fedora}/(Fedora-([^-]+)-Live-([^-]+)-([^-]+)-[^-]+\.iso)\$" "${isofile}"

  menuentry "Fedora ${version} ${arch} ${variant}" "${isofile}" "${isoname}" --class fedora {
    set isofile=$2
    set isoname=$3
    echo "Using ${isoname}..."
    loopback loop $isofile
    probe --set isolabel --label (loop)
    linux (loop)/isolinux/vmlinuz root=live:CDLABEL=${isolabel} rd.live.image iso-scan/filename=${isofile} rhgb ro
    initrd (loop)/isolinux/initrd.img
  }
done
}

# kill for loop
break
done