tree-sitter-bp/test/highlight/select.bp

foo = select(soong_config_variable("my_namespace", "my_var"), {
    // ^ keyword.conditional
    "foo": unset,
    any @ foo: unset,
    //  ^ operator
    //    ^ variable
    default: "bar",
})

// It can still be used as a normal variable name
select = 42
// <- variable

// Or module property
foo {
    select: 42,
    // <- variable.parameter
}