syntax error: extern crate self as foo

[memoryruins]

#![feature(extern_crate_self)] will be stable in rustc 1.34:

extern crate self as serde; // Adds local crate to extern prelude as `serde`

mod foo { ... }

// Anywhere in this crate
use serde::foo; // OK
::serde::foo; // OK

tracking issue: rust-lang/rust#56409
stabilization report: rust-lang/rust#57407 (comment)

---

current syntax error in rust-analyzer:

extern crate self as foo;

Syntax Error: expected identifier

SOURCE_FILE@[0; 25)
  EXTERN_CRATE_ITEM@[0; 25)
    EXTERN_KW@[0; 6)
    WHITESPACE@[6; 7)
    CRATE_KW@[7; 12)
    WHITESPACE@[12; 13)
    err: `expected identifier`
    ERROR@[13; 17)
      SELF_KW@[13; 17)
    WHITESPACE@[17; 18)
    ALIAS@[18; 24)
      AS_KW@[18; 20)
      WHITESPACE@[20; 21)
      NAME@[21; 24)
        IDENT@[21; 24) "foo"
    SEMI@[24; 25)