Don't highlight parent nodes of comments on hover

crates/ide/src/hover.rs

@@ -139,6 +139,11 @@ pub(crate) fn hover(
         }
     }
 
+    if token.kind() == syntax::SyntaxKind::COMMENT {
+        // don't highlight the entire parent node on comment hover
+        return None;
+    }
+
     let node = token.ancestors().find(|n| {
         ast::Expr::can_cast(n.kind())
             || ast::Pat::can_cast(n.kind())
@@ -3419,4 +3424,15 @@ mod Foo<|> {
             "#]],
         );
     }
+
+    #[test]
+    fn hover_comments_dont_highlight_parent() {
+        check_hover_no_result(
+            r#"
+fn no_hover() {
+    // no<|>hover
+}
+"#,
+        );
+    }
 }