From b01702578d21960996b2402a1661f3752a250bcd Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sun, 1 Nov 2020 09:30:04 -0800
Subject: [PATCH 1/2] Add PartialEq<char> for proc_macro::Punct

---
 library/proc_macro/src/lib.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/library/proc_macro/src/lib.rs b/library/proc_macro/src/lib.rs
index 5a4b69cf6fc1b..4c44e85dae0ee 100644
--- a/library/proc_macro/src/lib.rs
+++ b/library/proc_macro/src/lib.rs
@@ -842,6 +842,13 @@ impl fmt::Debug for Punct {
     }
 }
 
+#[stable(feature = "proc_macro_punct_eq", since = "1.49.0")]
+impl PartialEq<char> for Punct {
+    fn eq(&self, rhs: &char) -> bool {
+        self.as_char() == *rhs
+    }
+}
+
 /// An identifier (`ident`).
 #[derive(Clone)]
 #[stable(feature = "proc_macro_lib2", since = "1.29.0")]

From 4652032c1472d3be3bb1a257393daea7bb2743f1 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sun, 1 Nov 2020 09:40:30 -0800
Subject: [PATCH 2/2] Add Punct PartialEq smoke test

---
 library/proc_macro/tests/test.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/library/proc_macro/tests/test.rs b/library/proc_macro/tests/test.rs
index 331b330cf29f0..d2e6b0bb8093b 100644
--- a/library/proc_macro/tests/test.rs
+++ b/library/proc_macro/tests/test.rs
@@ -1,6 +1,6 @@
 #![feature(proc_macro_span)]
 
-use proc_macro::LineColumn;
+use proc_macro::{LineColumn, Punct};
 
 #[test]
 fn test_line_column_ord() {
@@ -10,3 +10,11 @@ fn test_line_column_ord() {
     assert!(line0_column0 < line0_column1);
     assert!(line0_column1 < line1_column0);
 }
+
+#[test]
+fn test_punct_eq() {
+    // Good enough if it typechecks, since proc_macro::Punct can't exist in a test.
+    fn _check(punct: Punct) {
+        let _ = punct == ':';
+    }
+}