a tiny bash function that turns a folder containing bash scripts into a CLI with auto complete

mini-bash-cli.sh

function matt {
    if [[ ! -d "./matt "]]; then
        echo "No matt folder found."
    else
        options=$(ls matt | grep ".*\.sh$" | cut -d. -f1)
        if [[ -z "$1" ]]; then
            echo -e "Options:\n\n$options\n"
        else
            echo "Running $1"
            bash ./matt/$1.sh ${@:2}
        fi
    fi
}

function _matt_completions {
    if [[ -d "./matt" ]]; then
        if [ "${#COMP_WORDS[@]}" != "2" ]; then
            return
        fi
        options=$(ls matt | grep ".*\.sh$" | cut -d. -f1)
        COMPREPLY=($(compgen -W "$options" "${COMP_WORDS[1]}"))
    fi
}

complete -F _matt_completions matt