ProxSpace/msys2/usr/share/bash-completion/completions/useradd

# useradd(8) completion                                    -*- shell-script -*-

_useradd()
{
    local cur prev words cword split
    _init_completion -s || return

    # TODO: if -o/--non-unique is given, could complete on existing uids
    #       with -u/--uid

    case $prev in
        --comment | --help | --expiredate | --inactive | --key | --password | --uid | \
            --selinux-user | -!(-*)[chefKpuZ])
            return
            ;;
        --base-dir | --home-dir | --skel | --root | -!(-*)[bdkR])
            _filedir -d
            return
            ;;
        --gid | -!(-*)g)
            _gids
            COMPREPLY=($(compgen -W '${COMPREPLY[@]} $(compgen -g)' \
                -- "$cur"))
            return
            ;;
        --groups | -!(-*)G)
            local prefix=
            [[ $cur == *,* ]] && prefix="${cur%,*},"
            COMPREPLY=($(compgen -g -- "${cur##*,}"))
            ((${#COMPREPLY[@]} == 1)) && COMPREPLY=(${COMPREPLY/#/$prefix})
            return
            ;;
        --shell | -!(-*)s)
            _shells
            return
            ;;
    esac

    $split && return

    [[ $cur == -* ]] &&
        COMPREPLY=($(compgen -W '$(_parse_help "$1")' -- "$cur"))
} &&
    complete -F _useradd useradd

# ex: filetype=sh