From 08f89925bf0df7a3fe758129e4dbea1097c48bce Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Mon, 4 Nov 2024 11:45:52 -0500
Subject: [PATCH] Disregard equality binop in fallback parser

---
 impl/src/fmt.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/impl/src/fmt.rs b/impl/src/fmt.rs
index 7d07d55..3d1394c 100644
--- a/impl/src/fmt.rs
+++ b/impl/src/fmt.rs
@@ -184,7 +184,11 @@ fn fallback_explicit_named_args(input: ParseStream) -> Result<FmtArguments> {
     };
 
     while !input.is_empty() {
-        if input.peek(Token![,]) && input.peek2(Ident::peek_any) && input.peek3(Token![=]) {
+        if input.peek(Token![,])
+            && input.peek2(Ident::peek_any)
+            && input.peek3(Token![=])
+            && !input.peek3(Token![==])
+        {
             input.parse::<Token![,]>()?;
             let ident = input.call(Ident::parse_any)?;
             input.parse::<Token![=]>()?;