64 lines
1.4 KiB
Rust
64 lines
1.4 KiB
Rust
|
// FIXME: Ideally these suggestions would be fixed via rustfix. Blocked by rust-lang/rust#53934
|
||
|
|
// //@run-rustfix
|
||
|
|
|
||
|
|
#![allow(clippy::write_literal)]
|
||
|
|
#![warn(clippy::write_with_newline)]
|
||
|
|
|
||
|
|
use std::io::Write;
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let mut v = Vec::new();
|
||
|
|
|
||
|
|
// These should fail
|
||
|
|
writeln!(v, "Hello");
|
||
|
|
writeln!(v, "Hello {}", "world");
|
||
|
|
writeln!(v, "Hello {} {}", "world", "#2");
|
||
|
|
writeln!(v, "{}", 1265);
|
||
|
|
writeln!(v);
|
||
|
|
|
||
|
|
// These should be fine
|
||
|
|
write!(v, "");
|
||
|
|
write!(v, "Hello");
|
||
|
|
writeln!(v, "Hello");
|
||
|
|
writeln!(v, "Hello\n");
|
||
|
|
writeln!(v, "Hello {}\n", "world");
|
||
|
|
write!(v, "Issue\n{}", 1265);
|
||
|
|
write!(v, "{}", 1265);
|
||
|
|
write!(v, "\n{}", 1275);
|
||
|
|
write!(v, "\n\n");
|
||
|
|
write!(v, "like eof\n\n");
|
||
|
|
write!(v, "Hello {} {}\n\n", "world", "#2");
|
||
|
|
writeln!(v, "\ndon't\nwarn\nfor\nmultiple\nnewlines\n"); // #3126
|
||
|
|
writeln!(v, "\nbla\n\n"); // #3126
|
||
|
|
|
||
|
|
// Escaping
|
||
|
|
write!(v, "\\n"); // #3514
|
||
|
|
writeln!(v, "\\"); // should fail
|
||
|
|
write!(v, "\\\\n");
|
||
|
|
|
||
|
|
// Raw strings
|
||
|
|
write!(v, r"\n"); // #3778
|
||
|
|
|
||
|
|
// Literal newlines should also fail
|
||
|
|
writeln!(
|
||
|
|
v
|
||
|
|
);
|
||
|
|
writeln!(
|
||
|
|
v
|
||
|
|
);
|
||
|
|
|
||
|
|
// Don't warn on CRLF (#4208)
|
||
|
|
write!(v, "\r\n");
|
||
|
|
write!(v, "foo\r\n");
|
||
|
|
writeln!(v, "\\r"); // warns
|
||
|
|
write!(v, "foo\rbar\n");
|
||
|
|
|
||
|
|
// Ignore expanded format strings
|
||
|
|
macro_rules! newline {
|
||
|
|
() => {
|
||
|
|
"\n"
|
||
|
|
};
|
||
|
|
}
|
||
|
|
write!(v, newline!());
|
||
|
|
}
|