mdadm accepts --name but not -N

Binary package hint: mdadm

According to `mdadm --create --help':

--name=, -N: Textual name for array - max 32 characters

According to `man mdadm':

-N, --name=
Set a name for the array. This is currently only effective when creating an array with a version-1 superblock. The name is a simple textual string that can be used to identify array components when assembling.

Both show that -N is a valid short option for --name. However, see this output:

root@delan:~# mdadm -C /dev/md0 -N 'Green' -l 5 -e 1.0 -n 4 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1
mdadm: invalid option -- 'N'
Usage: mdadm --help
  for help
root@delan:~# mdadm -C /dev/md0 --name 'Green' -l 5 -e 1.0 -n 4 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1
mdadm: array /dev/md0 started.