fix: path display error when start with crate

Author: dzvon

crates/hir_ty/src/display.rs

@@ -1154,7 +1154,7 @@ impl HirDisplay for Path {
         }
 
         for (seg_idx, segment) in self.segments().iter().enumerate() {
-            if seg_idx != 0 {
+            if seg_idx != 0 || matches!(self.kind(), PathKind::Crate) {
                 write!(f, "::")?;
             }
             write!(f, "{}", segment.name)?;

crates/ide/src/hover.rs

@@ -962,6 +962,25 @@ fn main() { let foo_test = fo$0o(); }
                 ```
             "#]],
         );
+
+        // use literal `crate` in path
+        check(r#"
+pub struct X;
+
+fn foo() -> crate::X { X }
+
+fn main() { f$0oo(); }
+        "#, expect![[r#"
+            *foo*
+
+            ```rust
+            test
+            ```
+
+            ```rust
+            fn foo() -> crate::X
+            ```
+        "#]]);
     }
 
     #[test]