module completions {

  # unmount filesystems
  export extern umount [
    --all(-a)                 # All of the file systems described in /proc/mounts are unmounted. The proc filesystem is not unmounted.
    --force(-f)               # Force an unmount (in case of an unreachable NFS system).
    --lazy(-l)                # Lazy unmount. Detach the filesystem from the fs hierarchy now, and cleanup all references to the filesystem as soon as it is not busy anymore.
    -n                        # Unmount without writing in /etc/mtab. This is the default action. This flag exists only for historical compatability.
    --types(-t): string       # Indicate that the actions should only be taken on filesystems of the specified type.
    --verbose(-v)             # output a diagnostic for every file processed
    ...spec: string
    --help(-h)                # Print help (see more with '--help')
    --version(-V)             # Print version
  ]

}

use completions *