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#compdef unshare

local ign
(( $#words > 2 )) && ign='!'

# a different unshare exists on some systems
if [[ $OSTYPE != linux* ]]; then
  _default
  return
fi

_arguments -S -s \
  '(-m --mount)'{-m-,--mount=-}'[enter mount namespace]::file:_files' \
  '(-u --uts)'{-u-,--uts=-}'[enter UTS namespace (hostname etc)]::file:_files' \
  '(-i --ipc)'{-i-,--ipc=-}'[enter System V IPC namespace]::file:_files' \
  '(-n --net)'{-n-,--net=-}'[enter network namespace]::file:_files' \
  '(-p --pid)'{-p-,--pid=-}'[enter pid namespace]::file:_files' \
  '(-U --user)'{-U-,--user=-}'[enter user namespace]::file:_files' \
  '(-C --cgroup)'{-C-,--cgroup=-}'[enter cgroup namespace]::file:_files' \
  '(-T --time)'{-T-,--time=-}'[enter time namespace]::file:_files' \
  '(-f --fork)'{-f,--fork}"[fork before launching]" \
  '(-r --map-root-user)--map-user=[map current user to uid (implies --user)]:user:_users' \
  '--map-group=[map current group to gid (implies --user)]:group:_groups' \
  '(-r --map-root-user -c --map-current-user --map-user)'{-r,--map-root-user}'[map current user to root (implies --user)]' \
  '(-c --map-current-user)'{-c,--map-current-user}'[map current user to itself (implies --user)]' \
  '(-f --fork)--kill-child=-[when dying, kill the forked child (implies --fork)]::signal [KILL]:_signals' \
  '--mount-proc=-[mount proc filesystem first (implies --mount)]::mount point [/proc]:_directories' \
  '--propagation=[modify mount propagation in mount namespace]:propagation flag:(slave shared private unchanged)' \
  '--setgroups=[control the setgroups syscall in user namespaces]:grant setgroups:(allow deny)' \
  '--keep-caps[retain capabilities granted in user namespaces]' \
  '(-R --root)'{-R+,--root=}'[set the root directory]:directory:_directories' \
  '(-w --wd)'{-w+,--wd=}'[set the working directory]:directory:_directories' \
  '(-S --setuid)'{-S+,--setuid=}'[set uid in entered namespace]:uid [0]' \
  '(-G --setgid)'{-G+,--setgid=}'[set gid in entered namespace]:gid [0]' \
  '--monotonic=[set clock monotonic offset in time namespaces]:offset (seconds)' \
  '--boottime=[set clock boottime offset in time namespaces]:offset (seconds)' \
  "${ign}(- 1 *)"{-h,--help}'[display usage information]' \
  "${ign}(- 1 *)"{-V,--version}'[display version information]' \
  '1: : _command_names -e' \
  '*::args :_normal'