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#compdef sudo sudoedit

setopt localoptions extended_glob

local environ e cmd cpp
local -a args _comp_priv_prefix
local -A opt_args

zstyle -a ":completion:${curcontext}:" environ environ

for e in "${environ[@]}"
do local -x "$e"
done

args=(
  '(-A --askpass)'{-A,--askpass}'[use a helper program for password prompting]'
  '(-C --close-from)'{-C+,--close-from=}'[close file descriptors]:lowest fd to close'
  '(-g --group)'{-g+,--group=}'[run command as the specified group name or ID]:group:_groups'
  '(-)'{-h,--help}'[display help message and exit]'
  '(-h --host)'{-h+,--host=}'[run command on host]:host:_hosts'
  '(-K --remove-timestamp)'{-K,--remove-timestamp}'[remove timestamp file completely]'
  '(-k --reset-timestamp)'{-k,--reset-timestamp}'[invalidate timestamp file]'
  \*{-l,--list}"[list user's privileges or check a specific command]"
  '(-n --non-interactive)'{-n,--non-interactive}'[non-interactive mode, no prompts are used]'
  '(-p --prompt)'{-p+,--prompt=}'[use the specified password prompt]:prompt'
  '(-r --role)'{-r+,--role=}'[create SELinux security context with specified role]: :_selinux_roles'
  '(-S --stdin)'{-S,--stdin}'[read password from standard input]'
  '(-t --type)'{-t+,--type=}'[create SELinux security context with specified type]: :_selinux_types'
  '(-T --command-timeout)'{-T+,--command-timeout=}'[terminate command after specified time limit]:timeout'
  '(-U --other-user)'{-U+,--other-user=}'[in list mode, display privileges for user]:user:_users'
  '(-u --user)'{-u+,--user=}'[run command (or edit file) as specified user]:user:_users'
  '(-)'{-V,--version}'[display version information and exit]'
  '(-v --validate)'{-v,--validate}"[update user's timestamp without running a command]"
)

# Does -e appears before the first word that doesn't begin with a hyphen?
# The way (i) works in subscripts, the test will always be true if all the
# words begin with a hyphen.
# 
# TODO: use _arguments' $opt_args to detect the cases '-u jrandom -e' and '-Ae'
if [[ $service = sudoedit ]] || (( $words[(i)-e] < $words[(i)^(*sudo|-[^-]*)] ))  ; then
  args=( -A "-*" $args '!(-V --version -h --help)-e' '*:file:_files' )
else
  cmd="$words[1]"
  cpp='_comp_priv_prefix=(
    $cmd -n
    ${(kv)opt_args[(I)(-[ugHEP]|--(user|group|set-home|preserve-env|preserve-groups))]}
  )'
  args+=(
    '(-e --edit 1 *)'{-e,--edit}'[edit files instead of running a command]' \
    '(-s --shell)'{-s,--shell}'[run shell as the target user; a command may also be specified]' \
    '(-i --login)'{-i,--login}'[run login shell as the target user; a command may also be specified]' \
    '(-b --background -i --login -s --shell -e --edit)'{-b,--background}'[run command in the background]' \
    '(--preserve-env -i --login -s --shell -e --edit)-E[preserve user environment when running command]' \
    '(-E -i --login -s --shell -e --edit)--preserve-env=-[preserve user environment when running command]::environment variable:_sequence _parameters -g "*export*"' \
    '(-H --set-home -i --login -s --shell -e --edit)'{-H,--set-home}"[set HOME variable to target user's home dir]" \
    '(-P --preserve-groups -i -login -s --shell -e --edit)'{-P,--preserve-groups}"[preserve group vector instead of setting to target's]" \
    "(-)1: :{ $cpp; _command_names -e }"
    "*:: :{ $cpp; _normal }"
  )
fi

_arguments -s -S $args