From 3f37543794e5d43952399847a2ecbc1eb39f609f Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sat, 16 Mar 2024 15:43:58 -0700
Subject: [PATCH 1/2] Implement Copy for syn::parse::Nothing

---
 src/parse.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/parse.rs b/src/parse.rs
index 8668e0e1b7..a3b2f18e77 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -1354,6 +1354,18 @@ impl Parse for Nothing {
     }
 }
 
+#[cfg(feature = "clone-impls")]
+#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
+impl Clone for Nothing {
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+
+#[cfg(feature = "clone-impls")]
+#[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
+impl Copy for Nothing {}
+
 #[cfg(feature = "extra-traits")]
 #[cfg_attr(doc_cfg, doc(cfg(feature = "extra-traits")))]
 impl Debug for Nothing {

From 4f6c0528d63874495ce23d197a898cd63cb04d60 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sat, 16 Mar 2024 15:45:11 -0700
Subject: [PATCH 2/2] Implement ToTokens for syn::parse::Nothing

---
 src/parse.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/parse.rs b/src/parse.rs
index a3b2f18e77..aafc1a9649 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -188,6 +188,8 @@ use crate::lookahead;
 use crate::punctuated::Punctuated;
 use crate::token::Token;
 use proc_macro2::{Delimiter, Group, Literal, Punct, Span, TokenStream, TokenTree};
+#[cfg(feature = "printing")]
+use quote::ToTokens;
 use std::cell::Cell;
 use std::fmt::{self, Debug, Display};
 #[cfg(feature = "extra-traits")]
@@ -1354,6 +1356,14 @@ impl Parse for Nothing {
     }
 }
 
+#[cfg(feature = "printing")]
+#[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
+impl ToTokens for Nothing {
+    fn to_tokens(&self, tokens: &mut TokenStream) {
+        let _ = tokens;
+    }
+}
+
 #[cfg(feature = "clone-impls")]
 #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
 impl Clone for Nothing {