From 3d0952b3162a5132f022c0d7fb6f9a24a6e48578 Mon Sep 17 00:00:00 2001
From: Yuya Nishihara <yuya@tcha.org>
Date: Sun, 10 Mar 2024 21:48:47 +0900
Subject: [PATCH] index: implement AsCompositeIndex for CompositeIndex, not for
 &CompositeIndex

Just a minor code cleanup. We still need Index for &CompositeIndex because the
type is unsized, and unsized type cannot be converted to another dyn reference.
---
 lib/src/default_index/composite.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/src/default_index/composite.rs b/lib/src/default_index/composite.rs
index a75caf442..a54482917 100644
--- a/lib/src/default_index/composite.rs
+++ b/lib/src/default_index/composite.rs
@@ -399,12 +399,13 @@ impl CompositeIndex {
     }
 }
 
-impl AsCompositeIndex for &CompositeIndex {
+impl AsCompositeIndex for CompositeIndex {
     fn as_composite(&self) -> &CompositeIndex {
         self
     }
 }
 
+// In revset engine, we need to convert &CompositeIndex to &dyn Index.
 impl Index for &CompositeIndex {
     /// Suppose the given `commit_id` exists, returns the minimum prefix length
     /// to disambiguate it. The length to be returned is a number of hexadecimal