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- fn main() {
- println!("{:?}", {
- macro_rules! b { (\n) => (1), (\) => (0) }; b!(\n)
- });
- }
- /* ~~~~=== stderr ===~~~~
- Compiling playground v0.0.1 (file:///playground)
- error: unknown start of token: \
- --> src/main.rs:5:27
- |
- 5 | macro_rules! b { (\n) => (1), (\) => (0) }; b!(\n)
- | ^
- error: aborting due to previous error
- error: Could not compile `playground`.
- To learn more, run the command again with --verbose.
- */
- /* ~~~~=== stdout ===~~~~
- */
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