1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/macros/format-foreign.rs b/tests/ui/macros/format-foreign.rs
new file mode 100644
index 000000000..ac65838f2
--- /dev/null
+++ b/tests/ui/macros/format-foreign.rs
@@ -0,0 +1,17 @@
+fn main() {
+    println!("%.*3$s %s!\n", "Hello,", "World", 4); //~ ERROR multiple unused formatting arguments
+    println!("%1$*2$.*3$f", 123.456); //~ ERROR never used
+    println!(r###"%.*3$s
+        %s!\n
+"###, "Hello,", "World", 4);
+    //~^ ERROR multiple unused formatting arguments
+    // correctly account for raw strings in inline suggestions
+
+    // This should *not* produce hints, on the basis that there's equally as
+    // many "correct" format specifiers.  It's *probably* just an actual typo.
+    println!("{} %f", "one", 2.0); //~ ERROR never used
+
+    println!("Hi there, $NAME.", NAME="Tim"); //~ ERROR never used
+    println!("$1 $0 $$ $NAME", 1, 2, NAME=3);
+    //~^ ERROR multiple unused formatting arguments
+}