# id(1) completion                                         -*- shell-script -*-

proc _id {
    local cur prev words cword
    _init_completion || return

    if [[ "$cur" == -* ]] {
        local opts=$( _parse_help "$1" )
        [[ $opts ]] || setvar opts = ""-G -g -u"" # POSIX fallback
        setvar COMPREPLY = ''( $( compgen -W "$opts" -- "$cur" ) )
    } else {
        setvar COMPREPLY = ''( $( compgen -u "$cur" ) )
    }
} &&
complete -F _id id

# ex: ts=4 sw=4 et filetype=sh