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

_crontab()
{
    local cur prev words cword
    _init_completion || return

    case $prev in
        -u)
            _allowed_users
            return 0
            ;;
    esac

    local -A opts=( [-u]= [-l]= [-r]= [-e]= )
    [[ $OSTYPE == *linux* ]] && opts[-i]=
    [[ -d /sys/fs/selinux || -d /selinux ]] && opts[-s]=

    local i
    for (( i=0; i < ${#words[@]}-1; i++ )); do
        [[ ${words[i]} ]] && unset opts[${words[i]}]
        case "${words[i]}" in
            -l)
                unset opts[-r] opts[-e] opts[-i] opts[-s]
                ;;
            -e)
                unset opts[-l] opts[-r] opts[-i]
                ;;
            -r)
                unset opts[-l] opts[-e]
                ;;
            -u)
                unset opts[-i]
                ;;
        esac
    done

    if [[ "$cur" == -* ]]; then
        COMPREPLY=( $( compgen -W '${!opts[@]}' -- "$cur" ) )
        return 0
    fi

    # do filenames only if we did not have -l, -r, or -e
    [[ "${words[@]}" == *\ -@(l|r|e)* ]] || _filedir
} &&
complete -F _crontab crontab

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