let goodwant = "door1";
let badwant = "door4";

let got = select goodwant, "OOPS", {
    door1 = "grand prize",
    door2 = "you lose",
};

let defaultgot = select badwant, "OOPS", {
    door1 = "grand prize",
    door2 = "you lose",
};

assert |got == "grand prize"|;
assert |defaultgot == "OOPS"|;

// select inside a macro

let condmacro = macro(arg) => {
    output = select arg, NULL, {
        opt1 = "yay",
        opt2 = "boo",
    },
};

let result = condmacro("opt1");

assert |condmacro("opt1") == {output = "yay"}|;
assert |condmacro("opt2") == {output = "boo"}|;
assert |condmacro("invalid") == {output = NULL}|;