Control a LEAVE block's execution

try-leave.raku

I want a LEAVE block to run after a sub has completed,
but only if some condition is True.

# --------------------------------------------------------------------
# Start from this.

sub foo1 {
    ⋯
    LEAVE {⋯}
    ⋯
}
    The LEAVE block runs after foo() completes, always.

# --------------------------------------------------------------------
# Nope.

sub foo2 {
    ⋯
    if $cond {
        LEAVE {⋯}
        ⋯
    }
        The LEAVE block runs here, after the ｢if｣ block, but still
        always (that is, whether $cond is True or False), because it's
        a compile-time thing.
    ⋯
}

# --------------------------------------------------------------------
# Solution.

sub foo3 {
    ⋯
    if $cond {
        ⋯
    }
    LEAVE {⋯ if $cond}
    ⋯
}
    The LEAVE block runs after foo() completes, again always, but the
    ｢if $cond｣ in its block prevents unwanted stuff from being run.