'file -r' returns invalid option

[Greg Stachowski]

Attempting to use the '-r' option returns 'invalid option' although '-r' is listed in the usage and man page:

$file -b -N -L -k -r s.fits
file: invalid option -- 'r'
Usage: file [-bchikLlNnprsvz0] [--apple] [--mime-encoding] [--mime-type]
            [-e testname] [-F separator] [-f namefile] [-m magicfiles] file ...
       file -C [-m magicfiles]
       file [--help]

Expected behaviour:
'-r' works or is removed from usage (prefer the former as removing it will break a lot of things).

Ubuntu release:
Description: Ubuntu 14.04.5 LTS
Release: 14.04

Package version:
file:
  Installed: 1:5.14-2ubuntu3.4
  Candidate: 1:5.14-2ubuntu3.4
  Version table:
 *** 1:5.14-2ubuntu3.4 0
        501 http://pl.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        501 http://pl.archive.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
        100 /var/lib/dpkg/status
     1:5.14-2ubuntu3 0
        501 http://pl.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages