From 37c5b82938040c89a2b7a3756e8bd9b3ae3badd2 Mon Sep 17 00:00:00 2001
From: Lukas Wirth <lukastw97@gmail.com>
Date: Fri, 11 Dec 2020 15:46:47 +0100
Subject: [PATCH] Don't highlight parent nodes of comments on hover

---
 crates/ide/src/hover.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/crates/ide/src/hover.rs b/crates/ide/src/hover.rs
index cf04c3de08..ab017d2ada 100644
--- a/crates/ide/src/hover.rs
+++ b/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
+}
+"#,
+        );
+    }
 }