Generic return type for closure returned from function doesn't work

[svelterust]

V version: 0.2.4
OS: Arch Linux

What did you do?

fn closure<T>(input T) fn () T {
    return fn [input] () T {
        return input
    }
}

fn main() {
    closure(123)
}

What did you expect to see?
No error.

What did you see instead?

./bug.v:4:12: error: generic function declaration must specify generic type names, e.g. foo<T>
    2 | 
    3 | fn closure<T>(input T) fn () T {
    4 |     return fn [input] () T {
      |            ~~~~~~~~~~~~~~~~~
    5 |         return input
    6 |     }

I tried adding generic type name, but that resulted in this:

./bug.v:4:14: error: unexpected token `<`, expecting `(`
    2 | 
    3 | fn closure<T>(input T) fn () T {
    4 |     return fn<T> [input] () T {
      |              ^
    5 |         return input
    6 |     }

[vladimirmyshkovski]

I have the same error.

[spytheman]

fn closure<T>(input T) fn () T {
    return fn [input] <T>() T {
        return input
    }
}

fn main() {
    f := closure(123)
    dump(f())
}

now produces: [cc.v:9] main.f(): 123

[Cergoo]

V 0.4.7 3ca5bc3
OS Linux Mint 22

but

fn closure<T>(input T) fn () []T {
    return fn [input] <T>() []T {
        return [input, input]
    }
}

fn main() {
    f := closure(123)
    dump(f())
}

Can't run code. The server returned an error:
code.v:2:12: error: cannot use `fn () []T` as type `fn () []int` in return argument
    1 | fn closure(input T) fn () []T {
    2 |     return fn [input] () []T {
      |            ~~~~~~~~~~~~~~~~~~~~~~
    3 |         return [input, input]
    4 |     }
Exited with error status 1