From 1773e8318f0ff7a928867df0d56c9d58b9b906e7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alper=20=C3=87ugun?= <github@alper.nl>
Date: Mon, 27 Dec 2021 12:28:11 +0100
Subject: [PATCH] Add another implementation example to Debug trait

---
 library/core/src/fmt/mod.rs | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs
index 6fc3cd0b7c4..2d4f477ca01 100644
--- a/library/core/src/fmt/mod.rs
+++ b/library/core/src/fmt/mod.rs
@@ -570,11 +570,26 @@ impl Display for Arguments<'_> {
 /// There are a number of helper methods on the [`Formatter`] struct to help you with manual
 /// implementations, such as [`debug_struct`].
 ///
+/// [`debug_struct`]: Formatter::debug_struct
+///
+/// For custom cases, it's also possible to implement `Debug` using the [`write!`] macro:
+/// ```
+/// # use std::fmt;
+/// # struct Point {
+/// #     x: i32,
+/// #     y: i32,
+/// # }
+///
+/// impl fmt::Debug for Point {
+///     fn fmt(&self, f: &mut fmt::Formatter <'_>) -> fmt::Result {
+///         write!(f, "Point [{} {}]", self.x, self.y)
+///     }
+/// }
+/// ```
+///
 /// `Debug` implementations using either `derive` or the debug builder API
 /// on [`Formatter`] support pretty-printing using the alternate flag: `{:#?}`.
 ///
-/// [`debug_struct`]: Formatter::debug_struct
-///
 /// Pretty-printing with `#?`:
 ///
 /// ```