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#![allow(unused_must_use)]
#![warn(clippy::write_literal)]
use std::io::Write;
fn main() {
let mut v = Vec::new();
writeln!(&mut v, "{}", "{hello}");
writeln!(&mut v, r"{}", r"{hello}");
writeln!(&mut v, "{}", '\'');
writeln!(&mut v, "{}", '"');
writeln!(&mut v, r"{}", '"'); // don't lint
writeln!(&mut v, r"{}", '\'');
writeln!(
&mut v,
"some {}",
"hello \
world!"
);
writeln!(
&mut v,
"some {}\
{} \\ {}",
"1", "2", "3",
);
}
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