From 06f1c0d725855861535e9e65cd4d502aca7c61ed Mon Sep 17 00:00:00 2001
From: Victor Zverovich <viz@meta.com>
Date: Fri, 24 Nov 2023 10:21:57 -0800
Subject: [PATCH] Clarify that calling non-const format is deprecated

---
 include/fmt/core.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/fmt/core.h b/include/fmt/core.h
index aaeb2cfa..ba982964 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -1318,6 +1318,7 @@ template <typename Context> class value {
     parse_ctx.advance_to(f.parse(parse_ctx));
     using qualified_type =
         conditional_t<has_const_formatter<T, Context>(), const T, T>;
+    // Calling format through a mutable reference is deprecated.
     ctx.advance_to(f.format(*static_cast<qualified_type*>(arg), ctx));
   }
 };