`print_literal` suggestion fails if we use unicode for { }: \x7B \x7D

kinda niche..

Using the following flags

--force-warn clippy::print_literal

this code:

macro_rules! static_str {
    () => { "Hello World" }
}

fn main() {
    println!("{}", file!());
    println!("{}", line!());
    println!("{}", static_str!());
    println!("{}", "\x7Ba\x7D \x7Bb\x7D");
}

caused the following diagnostics:

    Checking _9678386ff9a4065e3028a54598b4f3fc290974d1 v0.1.0 (/tmp/icemaker_global_tempdir.dESjtcUkYIKG/icemaker_clippyfix_tempdir.FWxuE6MPCOF0/_9678386ff9a4065e3028a54598b4f3fc290974d1)
warning: literal with an empty format string
 --> src/main.rs:9:20
  |
9 |     println!("{}", "\x7Ba\x7D \x7Bb\x7D");
  |                    ^^^^^^^^^^^^^^^^^^^^^
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
  = note: requested on the command line with `--force-warn clippy::print-literal`
help: try
  |
9 -     println!("{}", "\x7Ba\x7D \x7Bb\x7D");
9 +     println!("\x7Ba\x7D \x7Bb\x7D");
  |

warning: `_9678386ff9a4065e3028a54598b4f3fc290974d1` (bin "_9678386ff9a4065e3028a54598b4f3fc290974d1") generated 1 warning (run `cargo clippy --fix --bin "_9678386ff9a4065e3028a54598b4f3fc290974d1" -p _9678386ff9a4065e3028a54598b4f3fc290974d1` to apply 1 suggestion)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s

However after applying these diagnostics, the resulting code:

macro_rules! static_str {
    () => { "Hello World" }
}

fn main() {
    println!("{}", file!());
    println!("{}", line!());
    println!("{}", static_str!());
    println!("\x7Ba\x7D \x7Bb\x7D");
}

no longer compiled:

    Checking _9678386ff9a4065e3028a54598b4f3fc290974d1 v0.1.0 (/tmp/icemaker_global_tempdir.dESjtcUkYIKG/icemaker_clippyfix_tempdir.FWxuE6MPCOF0/_9678386ff9a4065e3028a54598b4f3fc290974d1)
error[E0425]: cannot find value `a` in this scope
 --> src/main.rs:9:19
  |
9 |     println!("\x7Ba\x7D \x7Bb\x7D");
  |                   ^ not found in this scope

error[E0425]: cannot find value `b` in this scope
 --> src/main.rs:9:29
  |
9 |     println!("\x7Ba\x7D \x7Bb\x7D");
  |                             ^ not found in this scope

For more information about this error, try `rustc --explain E0425`.
error: could not compile `_9678386ff9a4065e3028a54598b4f3fc290974d1` (bin "_9678386ff9a4065e3028a54598b4f3fc290974d1" test) due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
error: could not compile `_9678386ff9a4065e3028a54598b4f3fc290974d1` (bin "_9678386ff9a4065e3028a54598b4f3fc290974d1") due to 2 previous errors

Version:

rustc 1.95.0-nightly (94a0cd15f 2026-01-27)
binary: rustc
commit-hash: 94a0cd15f5976fa35e5e6784e621c04e9f958e57
commit-date: 2026-01-27
host: x86_64-unknown-linux-gnu
release: 1.95.0-nightly
LLVM version: 21.1.8

Start by locating the print_literal lint and the code that builds its suggestion, then reproduce the reported snippet with --force-warn clippy::print_literal. The fix is done when the suggested rewrite still compiles and preserves braces represented by \x7B and \x7D.