wrong-escape-of-curly-braces.rs

// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

fn f() {
    let ok = "{{everything fine}}";
    let bad = "\{it is wrong\}";
    //~^  ERROR unknown character escape: {
    //~^^  HELP if used in a formatting string, curly braces are escaped with `{{` and `}}`
    //~^^^ ERROR unknown character escape: }
    //~^^^^  HELP if used in a formatting string, curly braces are escaped with `{{` and `}}`
}