Macro var::__var_internals

macro_rules! __var_internals {
    ($($name: ident : $t: ty = $init: expr),*; $(,)*) => { ... };
    ($($bname: ident : $bt: ty = $binit: expr),*; $name: ident = $init: expr, $($rest: tt)*) => { ... };
    ($($bname: ident : $bt: ty = $binit: expr),* ; $name: ident : $t: ty = $init: expr, $($rest: tt)*) => { ... };
}

Implementation details. Do not use this directly.