Function-local bitflags

[dtolnay]

Is there any hope of supporting usage like this? The error here is inconsistent with being able to declare structs and other types of items local to a function.

#[macro_use]
extern crate bitflags;

fn main() {
    bitflags! {
        flags Flags: u8 {
            const A = 1,
            const B = 2,
        }
    }
    println!("{:?}", A);
}

error[E0425]: cannot find value `A` in module `super::super`
  --> src/main.rs:5:5
   |
5  |       bitflags! {
   |  _____^ starting here...
6  | |         flags Flags: u8 {
7  | |             const A = 1,
8  | |             const B = 2,
9  | |         }
10 | |     }
   | |_____^ ...ending here: not found in `super::super`
   |
   = note: this error originates in a macro outside of the current crate