From a462e7c1d08ba0babd18a4a71d1833839c3cd52d Mon Sep 17 00:00:00 2001
From: Solomon Ucko <solly.ucko@gmail.com>
Date: Sun, 19 Jul 2020 11:10:03 -0400
Subject: [PATCH] Document `core::fmt::rt::v1::Count`

---
 src/libcore/fmt/rt/v1.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libcore/fmt/rt/v1.rs b/src/libcore/fmt/rt/v1.rs
index f6460470bfe18..37202b2774dc6 100644
--- a/src/libcore/fmt/rt/v1.rs
+++ b/src/libcore/fmt/rt/v1.rs
@@ -33,9 +33,13 @@ pub enum Alignment {
     Unknown,
 }
 
+/// Used by [width](https://doc.rust-lang.org/std/fmt/#width) and [precision](https://doc.rust-lang.org/std/fmt/#precision) specifiers.
 #[derive(Copy, Clone)]
 pub enum Count {
+    /// Specified with a literal number, stores the value
     Is(usize),
+    /// Specified using `$` and `*` syntaxes, stores the index into `args`
     Param(usize),
+    /// Not specified
     Implied,
 }