From ad3654f3e73ecdebb7968110d1459170b6c7d70a Mon Sep 17 00:00:00 2001
From: Pratap Singh <pratapsingh1729@gmail.com>
Date: Fri, 10 Nov 2023 11:49:27 -0500
Subject: [PATCH] fix wildcard type annotation

---
 src/lib.rs             |  2 +-
 tests/rustfmt-tests.rs | 17 +++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index b9ef63c..ee0d2f6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -788,7 +788,7 @@ fn to_doc<'a>(
                 .brackets()
         }
         Rule::slice_type => map_to_doc(ctx, arena, pair).brackets(),
-        Rule::infer_type => map_to_doc(ctx, arena, pair),
+        Rule::infer_type => arena.text("_").append(map_to_doc(ctx, arena, pair)),
         Rule::fn_ptr_type => map_to_doc(ctx, arena, pair),
         Rule::fn_trait_type => map_to_doc(ctx, arena, pair),
         Rule::for_type => map_to_doc(ctx, arena, pair),
diff --git a/tests/rustfmt-tests.rs b/tests/rustfmt-tests.rs
index 65715f3..0978a92 100644
--- a/tests/rustfmt-tests.rs
+++ b/tests/rustfmt-tests.rs
@@ -354,3 +354,20 @@ use LongLongLongLongLongLongLongLongLongLongType as LongerLongLongLongLongLongLo
 "#;
     compare(file);
 }
+
+#[test]
+fn rust_wildcard_type_annotation() {
+    let file = r#"
+fn foo() {
+    let x: _ = bar();
+}
+
+fn blah() {
+let (temp_owl__x607, Tracked(itree)): ( _
+, Tracked<ITreeToken<(Seq<u8>, state_Initiator), Endpoint>> ) = { baz(); };
+}
+"#;
+    compare(file);
+    
+}
+