Move wmemory_buffer to wchar.h

include/fmt/format.h

@@ -647,15 +647,7 @@ enum { inline_buffer_size = 500 };
   A dynamically growing memory buffer for trivially copyable/constructible types
   with the first ``SIZE`` elements stored in the object itself.
 
-  You can use one of the following type aliases for common character types:
-
-  +----------------+------------------------------+
-  | Type           | Definition                   |
-  +================+==============================+
-  | memory_buffer  | basic_memory_buffer<char>    |
-  +----------------+------------------------------+
-  | wmemory_buffer | basic_memory_buffer<wchar_t> |
-  +----------------+------------------------------+
+  You can use the ```memory_buffer`` type alias for ``char`` instead.
 
   **Example**::
 
@@ -785,7 +777,6 @@ void basic_memory_buffer<T, SIZE, Allocator>::grow(size_t size) {
 }
 
 using memory_buffer = basic_memory_buffer<char>;
-using wmemory_buffer = basic_memory_buffer<wchar_t>;
 
 template <typename T, size_t SIZE, typename Allocator>
 struct is_contiguous<basic_memory_buffer<T, SIZE, Allocator>> : std::true_type {
@@ -1152,7 +1143,7 @@ inline It format_uint(It out, UInt value, int num_digits, bool upper = false) {
 // A converter from UTF-8 to UTF-16.
 class utf8_to_utf16 {
  private:
-  wmemory_buffer buffer_;
+  basic_memory_buffer<wchar_t> buffer_;
 
  public:
   FMT_API explicit utf8_to_utf16(string_view s);

include/fmt/wchar.h

@@ -24,6 +24,7 @@ using wstring_view = basic_string_view<wchar_t>;
 using wformat_parse_context = basic_format_parse_context<wchar_t>;
 using wformat_context = buffer_context<wchar_t>;
 using wformat_args = basic_format_args<wformat_context>;
+using wmemory_buffer = basic_memory_buffer<wchar_t>;
 
 #if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
 // Workaround broken conversion on older gcc.

test/format-test.cc

@@ -13,7 +13,8 @@
 #include "fmt/format.h"
 // clang-format on
 
-#include <stdint.h>     // uint32_t
+#include <stdint.h>  // uint32_t
+
 #include <climits>      // INT_MAX
 #include <cmath>        // std::signbit
 #include <cstring>      // std::strlen
@@ -1896,12 +1897,9 @@ TEST(format_test, format_to_wide) {
 }
 
 TEST(format_test, format_to_memory_buffer) {
-  fmt::basic_memory_buffer<char, 100> buffer;
-  fmt::format_to(buffer, "{}", "foo");
-  EXPECT_EQ("foo", to_string(buffer));
-  fmt::wmemory_buffer wbuffer;
-  fmt::format_to(wbuffer, L"{}", L"foo");
-  EXPECT_EQ(L"foo", to_string(wbuffer));
+  auto buf = fmt::basic_memory_buffer<char, 100>();
+  fmt::format_to(buf, "{}", "foo");
+  EXPECT_EQ("foo", to_string(buf));
 }
 
 TEST(format_test, format_to_vector) {

test/wchar-test.cc

@@ -37,6 +37,12 @@ TEST(wchar_test, vformat_to) {
   EXPECT_EQ(L"42", w);
 }
 
+TEST(wchar_test, format_to_memory_buffer) {
+  auto buf = fmt::wmemory_buffer();
+  fmt::format_to(buf, L"{}", L"foo");
+  EXPECT_EQ(L"foo", to_string(buf));
+}
+
 TEST(format_test, wide_format_to_n) {
   wchar_t buffer[4];
   buffer[3] = L'x';