nmenu

#!/bin/sh -e
## Nested menu

if [ -n "$1" ]; then
    cd "$1"
else
    NMENU_HOME="${XDG_CONFIG_DIR:-$HOME/.config}/nmenu"
    mkdir -p "$NMENU_HOME"
    cd "$NMENU_HOME"
fi

show_menu() {
    # shellcheck disable=SC2086
    {
        if [ -x menu ]; then
            ./menu
        elif [ -f menu ]; then
            cat menu
        else
            find . -type d
        fi
    } | dmenu $NMENU_MENU_ARGS
}
run_menu() {
    item=$(show_menu)

    if [ -f run ]; then
        exec ./run "$item"
    elif [ -d "$item" ]; then
        cd "$item"
        run_menu
    elif [ -f "$item" ]; then
        exec "./$item"
    else
        cmd="$(echo "$item" | cut -f2)"
        if [ -n "$cmd" ]; then
            # shellcheck disable=SC2086
            exec $cmd
        else
            exec "$item"
        fi
    fi
}
run_menu