Completion/Base/Utility/_call_program


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#autoload +X

local tmp err_fd=-1
local -a prefix

if [[ "$1" = -p ]]; then
  shift
  zstyle -t ":completion:${curcontext}:${1}" gain-privileges &&
      prefix=( $_comp_priv_prefix )
fi

if (( ${debug_fd:--1} > 2 )) || [[ ! -t 2 ]]
then exec {err_fd}>&2	# debug_fd is saved stderr, 2 is trace or redirect
else exec {err_fd}>/dev/null
fi

{	# Begin "always" block

if zstyle -s ":completion:${curcontext}:${1}" command tmp; then
  if [[ "$tmp" = -* ]]; then
    eval "$tmp[2,-1]" "$argv[2,-1]"
  else
    eval $prefix "$tmp"
  fi
else
  eval $prefix "$argv[2,-1]"
fi 2>&$err_fd

} always {

exec {err_fd}>&-

}