#compdef lsns

local ign

(( $#words > 2 )) && ign='!'
_arguments -s -S \
  '(-J --json)'{-J,--json}'[use JSON output format]' \
  '(-l --list)'{-l,--list}'[use list format output]' \
  '(-n --noheadings)'{-n,--noheadings}"[don't print headings]" \
  '(-o --output)'{-o,--output}'[define which output columns to use]:column:_sequence compadd -M "m\:{a-z}={A-Z}" - NS TYPE PATH NPROCS PID PPID COMMAND UID USER NETNSID NSFS' \
  '(-p --task)'{-p+,--task=}'[print process namespaces]:process id:_pids' \
  '(-r --raw)'{-r,--raw}'[use the raw output format]' \
  '(-u --notruncate)'{-u,--notruncate}"[don't truncate text in columns]" \
  '(-W --nowrap)'{-W,--nowrap}"[don't use multi-line representation]" \
  '(-t --type)'{-t+,--type=}'[filter by namespace type]:namespace type:(mnt net ipc user pid uts cgroup)' \
  "$ign(- *)"{-h,--help}'[display usage information]' \
  "$ign(- *)"{-V,--version}'[display version information]' \
  '*: :_guard "^-*" namespace'