1 files changed, 27 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/write_literal_2.rs b/src/tools/clippy/tests/ui/write_literal_2.rs
new file mode 100644
index 000000000..ba0d7be5e
--- /dev/null
+++ b/src/tools/clippy/tests/ui/write_literal_2.rs
@@ -0,0 +1,27 @@
+#![allow(unused_must_use)]
+#![warn(clippy::write_literal)]
+
+use std::io::Write;
+
+fn main() {
+    let mut v = Vec::new();
+
+    writeln!(v, "{}", "{hello}");
+    writeln!(v, r"{}", r"{hello}");
+    writeln!(v, "{}", '\'');
+    writeln!(v, "{}", '"');
+    writeln!(v, r"{}", '"'); // don't lint
+    writeln!(v, r"{}", '\'');
+    writeln!(
+        v,
+        "some {}",
+        "hello \
+        world!"
+    );
+    writeln!(
+        v,
+        "some {}\
+        {} \\ {}",
+        "1", "2", "3",
+    );
+}