#compdef mktemp gmktemp

local variant
local args

_pick_variant -r variant busybox=BusyBox gnu='Free Soft' unix --version

args=(
  '(-d --directory)'{-d,--directory}'[make directory instead of file]'
  '(: -)--help[display help information]'
  '(-p --tmpdir)'{-p+,--tmpdir=}'[make relative to specified directory]: :_directories'
  '(-q --quiet)'{-q,--quiet}'[suppress error messages]'
  '--suffix=[append specified suffix to template]:template suffix'
  '-t[interpret template as single path component relative to temp dir]'
  '(-u --dry-run)'{-u,--dry-run}'[print file name only]'
  '(: -)'{-V,--version}'[display version information]'
  '1: :_guard "^-*" "template name"'
)

# Non-GNU variants don't support long options (except BusyBox's --help)
if [[ $variant == *busybox* ]]; then # See also: _busybox
  args=( ${args:#((#s)|*\))(\*|)--^help*} )
elif [[ $variant != gnu ]]; then
  args=( ${args:#((#s)|*\))(\*|)--*} )
fi

[[ $variant == gnu ]] || {
  # BusyBox, OpenBSD, and Solaris have -p, but -t doesn't take an argument
  if [[ $variant == *busybox* ]] || [[ $OSTYPE == (openbsd|solaris)* ]]; then
    args=( ${args:#((#s)|*\))(\*|)-t*} )
    args+=( '-t[generate template relative to temp dir]' )
  # Dragonfly, FreeBSD, and Darwin take an argument to -t and support any number
  # of template files. These OSes do not have -p and -V.
  else
    args=( ${args:#((#s)|*\))(1:*|(\*|)-[ptV]*)} )
    args+=(
      '-t[generate template relative to temp dir using specified prefix]:template prefix'
      '*: :_guard "^-*" "template name"'
    )
  fi
}

_arguments -s -S : $args