From bb692015780c75c8b84247593a4eda2ce1ac83e2 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <viz@fb.com>
Date: Wed, 29 Dec 2021 14:46:45 -0800
Subject: [PATCH] Fix tuple join

---
 include/fmt/ranges.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/fmt/ranges.h b/include/fmt/ranges.h
index 57847bfc..eb9fb8a9 100644
--- a/include/fmt/ranges.h
+++ b/include/fmt/ranges.h
@@ -710,8 +710,9 @@ struct formatter<tuple_join_view<Char, T...>, Char> {
   FMT_CONSTEXPR auto do_parse(ParseContext& ctx,
                               std::integral_constant<size_t, N>)
       -> decltype(ctx.begin()) {
-    auto end = std::get<sizeof...(T) - N>(formatters_).parse(ctx);
+    auto end = ctx.begin();
 #if FMT_TUPLE_JOIN_SPECIFIERS
+    end = std::get<sizeof...(T) - N>(formatters_).parse(ctx);
     if (N > 1) {
       auto end1 = do_parse(ctx, std::integral_constant<size_t, N - 1>());
       if (end != end1)