wchar.h -> xchar.h because it handles other code unit types too

CMakeLists.txt

@@ -227,7 +227,7 @@ endfunction()
 # Define the fmt library, its includes and the needed defines.
 add_headers(FMT_HEADERS args.h chrono.h color.h compile.h core.h format.h
                         format-inl.h locale.h os.h ostream.h printf.h ranges.h
-                        wchar.h)
+                        xchar.h)
 if (FMT_MODULE)
   set(FMT_SOURCES src/fmt.cc)
 elseif (FMT_OS)

include/fmt/format.h

@@ -2889,8 +2889,8 @@ inline auto formatted_size(const S& fmt, Args&&... args) -> size_t {
 FMT_MODULE_EXPORT_END
 FMT_END_NAMESPACE
 
-#ifdef FMT_DEPRECATED_INCLUDE_WCHAR
-#  include "wchar.h"
+#ifdef FMT_DEPRECATED_INCLUDE_XCHAR
+#  include "xchar.h"
 #endif
 
 #ifdef FMT_HEADER_ONLY

include/fmt/locale.h

-#include "wchar.h"
-#warning fmt/locale.h is deprecated, include fmt/format.h or fmt/wchar.h instead
+#include "xchar.h"
+#warning fmt/locale.h is deprecated, include fmt/format.h or fmt/xchar.h instead

include/fmt/wchar.h → include/fmt/xchar.h

-// Formatting library for C++ - optional wchar_t support
+// Formatting library for C++ - optional wchar_t and exotic character support
 //
 // Copyright (c) 2012 - present, Victor Zverovich
 // All rights reserved.

src/fmt.cc

@@ -8,8 +8,10 @@ module;
 #  define WIN32_LEAN_AND_MEAN
 #endif
 
+#include <algorithm>
 #include <cctype>
 #include <cerrno>
+#include <chrono>
 #include <climits>
 #include <clocale>
 #include <cmath>
@@ -21,9 +23,6 @@ module;
 #include <cstring>
 #include <ctime>
 #include <cwchar>
-
-#include <algorithm>
-#include <chrono>
 #include <exception>
 #include <functional>
 #include <iterator>
@@ -76,17 +75,16 @@ export module fmt;
 #define FMT_END_DETAIL_NAMESPACE \
   }                              \
   export {
-
 // all library-provided declarations and definitions
 // must be in the module purview to be exported
-#include "fmt/format.h"
 #include "fmt/args.h"
+#include "fmt/chrono.h"
 #include "fmt/color.h"
 #include "fmt/compile.h"
-#include "fmt/chrono.h"
-#include "fmt/printf.h"
-#include "fmt/wchar.h"
+#include "fmt/format.h"
 #include "fmt/os.h"
+#include "fmt/printf.h"
+#include "fmt/xchar.h"
 
 module : private;
 

test/enforce-checks-test.cc

@@ -13,7 +13,7 @@
 #include "fmt/format.h"
 #include "fmt/ostream.h"
 #include "fmt/ranges.h"
-#include "fmt/wchar.h"
+#include "fmt/xchar.h"
 
 // Exercise the API to verify that everything we expect to can compile.
 void test_format_api() {

test/wchar-test.cc

@@ -5,10 +5,9 @@
 //
 // For the license information refer to format.h.
 
-#include "fmt/wchar.h"
-
 #include <complex>
 
+#include "fmt/xchar.h"
 #include "gtest/gtest.h"
 
 using fmt::detail::max_value;