Pasted identifier may not refer to a captured local variable

[dtolnay]

This is a consequence of hygiene rules.

extern crate paste;

fn main() {
    let yy = 0;

    paste::expr! {
        println!("{}", [<y y>]);
    }
}

error[E0425]: cannot find value `yy` in this scope                                                                             
 --> src/main.rs:6:5                                                                                                           
  |                                                                                                                            
6 | /     paste::expr! {                                                                                                       
7 | |         println!("{}", [<y y>]);                                                                                         
8 | |     }                                                                                                                    
  | |_____^ not found in this scope