From 423a5bb5c437c2ce81d4150490d0cccfdbc33a4c Mon Sep 17 00:00:00 2001
From: Corey Farwell <coreyf@rwell.org>
Date: Sat, 12 Jan 2019 11:00:14 -0500
Subject: [PATCH] add comment explaining what the derive does

---
 src/libcore/cmp.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libcore/cmp.rs b/src/libcore/cmp.rs
index 64e37ec5a56c..72ff9cca9fd8 100644
--- a/src/libcore/cmp.rs
+++ b/src/libcore/cmp.rs
@@ -96,6 +96,7 @@ use self::Ordering::*;
 /// For example, let's tweak our previous code a bit:
 ///
 /// ```
+/// // The derive implements <BookFormat> == <BookFormat> comparisons
 /// #[derive(PartialEq)]
 /// enum BookFormat {
 ///     Paperback,