Make ranges only depend on fmt/base.h

include/fmt/base.h

@@ -585,6 +585,17 @@ struct has_to_string_view<
     T, void_t<decltype(detail::to_string_view(std::declval<T>()))>>
     : std::true_type {};
 
+template <typename CharT, CharT... C> struct string_literal {
+  static constexpr CharT value[sizeof...(C)] = {C...};
+  constexpr operator basic_string_view<CharT>() const {
+    return {value, sizeof...(C)};
+  }
+};
+#if FMT_CPLUSPLUS < 201703L
+template <typename CharT, CharT... C>
+constexpr CharT string_literal<CharT, C...>::value[sizeof...(C)];
+#endif
+
 enum class type {
   none_type,
   // Integer types should go first,

include/fmt/format.h

@@ -292,18 +292,6 @@ template <typename Char> using std_string_view = std::basic_string_view<Char>;
 template <typename T> struct std_string_view {};
 #endif
 
-template <typename CharT, CharT... C> struct string_literal {
-  static constexpr CharT value[sizeof...(C)] = {C...};
-  constexpr operator basic_string_view<CharT>() const {
-    return {value, sizeof...(C)};
-  }
-};
-
-#if FMT_CPLUSPLUS < 201703L
-template <typename CharT, CharT... C>
-constexpr CharT string_literal<CharT, C...>::value[sizeof...(C)];
-#endif
-
 // Implementation of std::bit_cast for pre-C++20.
 template <typename To, typename From, FMT_ENABLE_IF(sizeof(To) == sizeof(From))>
 FMT_CONSTEXPR20 auto bit_cast(const From& from) -> To {

include/fmt/ranges.h

@@ -9,10 +9,11 @@
 #define FMT_RANGES_H_
 
 #include <initializer_list>
+#include <iterator>
 #include <tuple>
 #include <type_traits>
 
-#include "format.h"
+#include "base.h"
 
 FMT_BEGIN_NAMESPACE
 
@@ -676,12 +677,10 @@ struct formatter<tuple_join_view<Char, T...>, Char> {
       typename FormatContext::iterator {
     auto out = std::get<sizeof...(T) - N>(formatters_)
                    .format(std::get<sizeof...(T) - N>(value.tuple), ctx);
-    if (N > 1) {
-      out = std::copy(value.sep.begin(), value.sep.end(), out);
-      ctx.advance_to(out);
-      return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
-    }
-    return out;
+    if (N <= 1) return out;
+    out = detail::copy<Char>(value.sep, out);
+    ctx.advance_to(out);
+    return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
   }
 };
 

test/ranges-odr-test.cc

@@ -7,6 +7,7 @@
 
 #include <vector>
 
+#include "fmt/format.h"
 #include "fmt/ranges.h"
 #include "gtest/gtest.h"
 

test/ranges-test.cc

@@ -20,6 +20,7 @@
 #  include <ranges>
 #endif
 
+#include "fmt/format.h"
 #include "gtest/gtest.h"
 
 #if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 601