From 7477dda28ddc166b6e4edb0f96abf295fb1c44b0 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <viz@meta.com>
Date: Thu, 29 Aug 2024 14:39:26 -0700
Subject: [PATCH] Simplify is_utf8_enabled

---
 include/fmt/base.h | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/include/fmt/base.h b/include/fmt/base.h
index 2605bed6..29d0bc4c 100644
--- a/include/fmt/base.h
+++ b/include/fmt/base.h
@@ -478,12 +478,7 @@ struct is_std_string_like<T, void_t<decltype(std::declval<T>().find_first_of(
                           const typename T::value_type*> {};
 
 // Returns true iff the literal encoding is UTF-8.
-constexpr auto is_utf8_enabled() -> bool {
-  // Avoid an MSVC sign extension bug: https://github.com/fmtlib/fmt/pull/2297.
-  using uchar = unsigned char;
-  return sizeof("\u00A7") == 3 && uchar("\u00A7"[0]) == 0xC2 &&
-         uchar("\u00A7"[1]) == 0xA7;
-}
+constexpr auto is_utf8_enabled() -> bool { return "\u00A7"[1] == '\xA7'; }
 constexpr auto use_utf8() -> bool {
   return !FMT_MSC_VERSION || is_utf8_enabled();
 }