diff --git a/std/os/windows.zig b/std/os/windows.zig
index 1d5900401..0757d9924 100644
--- a/std/os/windows.zig
+++ b/std/os/windows.zig
@@ -756,11 +756,19 @@ pub fn sliceToPrefixedSuffixedFileW(s: []const u8, comptime suffix: []const u16)
     return result;
 }
 
+inline fn MAKELANGID(p: USHORT, s: USHORT) LANGID {
+    return (s << 10) | p;
+}
+
 /// Call this when you made a windows DLL call or something that does SetLastError
 /// and you get an unexpected error.
 pub fn unexpectedError(err: DWORD) std.os.UnexpectedError {
     if (std.os.unexpected_error_tracing) {
-        std.debug.warn("unexpected GetLastError(): {}\n", err);
+        var buf: LPSTR = undefined;
+        const len = kernel32.FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, null, err, MAKELANGID(LANG.LANG_NEUTRAL, LANG.SUBLANG_DEFAULT), buf, 0, null);
+        defer _ = kernel32.LocalFree(@ptrCast(HLOCAL, buf));
+        std.debug.warn("error.Unexpected: {}: {}\n", err, buf[0..len]);
+
         std.debug.dumpCurrentStackTrace(null);
     }
     return error.Unexpected;
diff --git a/std/os/windows/bits.zig b/std/os/windows/bits.zig
index 0bf299190..d05266c9f 100644
--- a/std/os/windows/bits.zig
+++ b/std/os/windows/bits.zig
@@ -6,6 +6,7 @@ const assert = std.debug.assert;
 const maxInt = std.math.maxInt;
 
 pub const ERROR = @import("error.zig");
+pub const LANG = @import("lang.zig");
 
 /// The standard input device. Initially, this is the console input buffer, CONIN$.
 pub const STD_INPUT_HANDLE = maxInt(DWORD) - 10 + 1;
@@ -55,6 +56,10 @@ pub const ULONG = u32;
 pub const LONG = i32;
 pub const ULONGLONG = u64;
 pub const LONGLONG = i64;
+pub const HLOCAL = HANDLE;
+pub const LANGID = c_ushort;
+
+pub const va_list = *@OpaqueType();
 
 pub const TRUE = 1;
 pub const FALSE = 0;
@@ -525,3 +530,13 @@ pub const COINIT = extern enum {
 /// > this expansion applies to the total length.
 /// from https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#maximum-path-length-limitation
 pub const PATH_MAX_WIDE = 32767;
+
+pub const FORMAT_MESSAGE_ALLOCATE_BUFFER = 0x00000100;
+pub const FORMAT_MESSAGE_ARGUMENT_ARRAY = 0x00002000;
+pub const FORMAT_MESSAGE_FROM_HMODULE = 0x00000800;
+pub const FORMAT_MESSAGE_FROM_STRING = 0x00000400;
+pub const FORMAT_MESSAGE_FROM_SYSTEM = 0x00001000;
+pub const FORMAT_MESSAGE_IGNORE_INSERTS = 0x00000200;
+pub const FORMAT_MESSAGE_MAX_WIDTH_MASK = 0x000000FF;
+pub const FORMAT_MESSAGE_FROM_HMODULE = 0x00000800;
+pub const FORMAT_MESSAGE_FROM_STRING = 0x00000400;
diff --git a/std/os/windows/kernel32.zig b/std/os/windows/kernel32.zig
index 852369df2..bee1b8254 100644
--- a/std/os/windows/kernel32.zig
+++ b/std/os/windows/kernel32.zig
@@ -50,6 +50,8 @@ pub extern "kernel32" stdcallcc fn FindFirstFileW(lpFileName: [*]const u16, lpFi
 pub extern "kernel32" stdcallcc fn FindClose(hFindFile: HANDLE) BOOL;
 pub extern "kernel32" stdcallcc fn FindNextFileW(hFindFile: HANDLE, lpFindFileData: *WIN32_FIND_DATAW) BOOL;
 
+pub extern "kernel32" stdcallcc fn FormatMessageA(dwFlags: DWORD, lpSource: LPVOID, dwMessageId: DWORD, dwLanguageId: DWORD, lpBuffer: LPSTR, nSize: DWORD, Arguments: ?*va_list) DWORD;
+
 pub extern "kernel32" stdcallcc fn FreeEnvironmentStringsW(penv: [*]u16) BOOL;
 
 pub extern "kernel32" stdcallcc fn GetCommandLineA() LPSTR;
@@ -116,6 +118,8 @@ pub extern "kernel32" stdcallcc fn HeapFree(hHeap: HANDLE, dwFlags: DWORD, lpMem
 
 pub extern "kernel32" stdcallcc fn HeapValidate(hHeap: HANDLE, dwFlags: DWORD, lpMem: ?*const c_void) BOOL;
 
+pub extern "kernel32" stdcallcc fn LocalFree(hMem: HLOCAL) ?HLOCAL;
+
 pub extern "kernel32" stdcallcc fn VirtualAlloc(lpAddress: ?LPVOID, dwSize: SIZE_T, flAllocationType: DWORD, flProtect: DWORD) ?LPVOID;
 pub extern "kernel32" stdcallcc fn VirtualFree(lpAddress: ?LPVOID, dwSize: SIZE_T, dwFreeType: DWORD) BOOL;
 
diff --git a/std/os/windows/lang.zig b/std/os/windows/lang.zig
new file mode 100644
index 000000000..7e6e2d1a7
--- /dev/null
+++ b/std/os/windows/lang.zig
@@ -0,0 +1,384 @@
+pub const LANG_NEUTRAL = 0x00;
+pub const LANG_INVARIANT = 0x7f;
+pub const LANG_AFRIKAANS = 0x36;
+pub const LANG_ALBANIAN = 0x1c;
+pub const LANG_ALSATIAN = 0x84;
+pub const LANG_AMHARIC = 0x5e;
+pub const LANG_ARABIC = 0x01;
+pub const LANG_ARMENIAN = 0x2b;
+pub const LANG_ASSAMESE = 0x4d;
+pub const LANG_AZERI = 0x2c;
+pub const LANG_AZERBAIJANI = 0x2c;
+pub const LANG_BANGLA = 0x45;
+pub const LANG_BASHKIR = 0x6d;
+pub const LANG_BASQUE = 0x2d;
+pub const LANG_BELARUSIAN = 0x23;
+pub const LANG_BENGALI = 0x45;
+pub const LANG_BRETON = 0x7e;
+pub const LANG_BOSNIAN = 0x1a;
+pub const LANG_BOSNIAN_NEUTRAL = 0x781a;
+pub const LANG_BULGARIAN = 0x02;
+pub const LANG_CATALAN = 0x03;
+pub const LANG_CENTRAL_KURDISH = 0x92;
+pub const LANG_CHEROKEE = 0x5c;
+pub const LANG_CHINESE = 0x04;
+pub const LANG_CHINESE_SIMPLIFIED = 0x04;
+pub const LANG_CHINESE_TRADITIONAL = 0x7c04;
+pub const LANG_CORSICAN = 0x83;
+pub const LANG_CROATIAN = 0x1a;
+pub const LANG_CZECH = 0x05;
+pub const LANG_DANISH = 0x06;
+pub const LANG_DARI = 0x8c;
+pub const LANG_DIVEHI = 0x65;
+pub const LANG_DUTCH = 0x13;
+pub const LANG_ENGLISH = 0x09;
+pub const LANG_ESTONIAN = 0x25;
+pub const LANG_FAEROESE = 0x38;
+pub const LANG_FARSI = 0x29;
+pub const LANG_FILIPINO = 0x64;
+pub const LANG_FINNISH = 0x0b;
+pub const LANG_FRENCH = 0x0c;
+pub const LANG_FRISIAN = 0x62;
+pub const LANG_FULAH = 0x67;
+pub const LANG_GALICIAN = 0x56;
+pub const LANG_GEORGIAN = 0x37;
+pub const LANG_GERMAN = 0x07;
+pub const LANG_GREEK = 0x08;
+pub const LANG_GREENLANDIC = 0x6f;
+pub const LANG_GUJARATI = 0x47;
+pub const LANG_HAUSA = 0x68;
+pub const LANG_HAWAIIAN = 0x75;
+pub const LANG_HEBREW = 0x0d;
+pub const LANG_HINDI = 0x39;
+pub const LANG_HUNGARIAN = 0x0e;
+pub const LANG_ICELANDIC = 0x0f;
+pub const LANG_IGBO = 0x70;
+pub const LANG_INDONESIAN = 0x21;
+pub const LANG_INUKTITUT = 0x5d;
+pub const LANG_IRISH = 0x3c;
+pub const LANG_ITALIAN = 0x10;
+pub const LANG_JAPANESE = 0x11;
+pub const LANG_KANNADA = 0x4b;
+pub const LANG_KASHMIRI = 0x60;
+pub const LANG_KAZAK = 0x3f;
+pub const LANG_KHMER = 0x53;
+pub const LANG_KICHE = 0x86;
+pub const LANG_KINYARWANDA = 0x87;
+pub const LANG_KONKANI = 0x57;
+pub const LANG_KOREAN = 0x12;
+pub const LANG_KYRGYZ = 0x40;
+pub const LANG_LAO = 0x54;
+pub const LANG_LATVIAN = 0x26;
+pub const LANG_LITHUANIAN = 0x27;
+pub const LANG_LOWER_SORBIAN = 0x2e;
+pub const LANG_LUXEMBOURGISH = 0x6e;
+pub const LANG_MACEDONIAN = 0x2f;
+pub const LANG_MALAY = 0x3e;
+pub const LANG_MALAYALAM = 0x4c;
+pub const LANG_MALTESE = 0x3a;
+pub const LANG_MANIPURI = 0x58;
+pub const LANG_MAORI = 0x81;
+pub const LANG_MAPUDUNGUN = 0x7a;
+pub const LANG_MARATHI = 0x4e;
+pub const LANG_MOHAWK = 0x7c;
+pub const LANG_MONGOLIAN = 0x50;
+pub const LANG_NEPALI = 0x61;
+pub const LANG_NORWEGIAN = 0x14;
+pub const LANG_OCCITAN = 0x82;
+pub const LANG_ODIA = 0x48;
+pub const LANG_ORIYA = 0x48;
+pub const LANG_PASHTO = 0x63;
+pub const LANG_PERSIAN = 0x29;
+pub const LANG_POLISH = 0x15;
+pub const LANG_PORTUGUESE = 0x16;
+pub const LANG_PULAR = 0x67;
+pub const LANG_PUNJABI = 0x46;
+pub const LANG_QUECHUA = 0x6b;
+pub const LANG_ROMANIAN = 0x18;
+pub const LANG_ROMANSH = 0x17;
+pub const LANG_RUSSIAN = 0x19;
+pub const LANG_SAKHA = 0x85;
+pub const LANG_SAMI = 0x3b;
+pub const LANG_SANSKRIT = 0x4f;
+pub const LANG_SCOTTISH_GAELIC = 0x91;
+pub const LANG_SERBIAN = 0x1a;
+pub const LANG_SERBIAN_NEUTRAL = 0x7c1a;
+pub const LANG_SINDHI = 0x59;
+pub const LANG_SINHALESE = 0x5b;
+pub const LANG_SLOVAK = 0x1b;
+pub const LANG_SLOVENIAN = 0x24;
+pub const LANG_SOTHO = 0x6c;
+pub const LANG_SPANISH = 0x0a;
+pub const LANG_SWAHILI = 0x41;
+pub const LANG_SWEDISH = 0x1d;
+pub const LANG_SYRIAC = 0x5a;
+pub const LANG_TAJIK = 0x28;
+pub const LANG_TAMAZIGHT = 0x5f;
+pub const LANG_TAMIL = 0x49;
+pub const LANG_TATAR = 0x44;
+pub const LANG_TELUGU = 0x4a;
+pub const LANG_THAI = 0x1e;
+pub const LANG_TIBETAN = 0x51;
+pub const LANG_TIGRIGNA = 0x73;
+pub const LANG_TIGRINYA = 0x73;
+pub const LANG_TSWANA = 0x32;
+pub const LANG_TURKISH = 0x1f;
+pub const LANG_TURKMEN = 0x42;
+pub const LANG_UIGHUR = 0x80;
+pub const LANG_UKRAINIAN = 0x22;
+pub const LANG_UPPER_SORBIAN = 0x2e;
+pub const LANG_URDU = 0x20;
+pub const LANG_UZBEK = 0x43;
+pub const LANG_VALENCIAN = 0x03;
+pub const LANG_VIETNAMESE = 0x2a;
+pub const LANG_WELSH = 0x52;
+pub const LANG_WOLOF = 0x88;
+pub const LANG_XHOSA = 0x34;
+pub const LANG_YAKUT = 0x85;
+pub const LANG_YI = 0x78;
+pub const LANG_YORUBA = 0x6a;
+pub const LANG_ZULU = 0x35;
+pub const SUBLANG_NEUTRAL = 0x00;
+pub const SUBLANG_DEFAULT = 0x01;
+pub const SUBLANG_SYS_DEFAULT = 0x02;
+pub const SUBLANG_CUSTOM_DEFAULT = 0x03;
+pub const SUBLANG_CUSTOM_UNSPECIFIED = 0x04;
+pub const SUBLANG_UI_CUSTOM_DEFAULT = 0x05;
+pub const SUBLANG_AFRIKAANS_SOUTH_AFRICA = 0x01;
+pub const SUBLANG_ALBANIAN_ALBANIA = 0x01;
+pub const SUBLANG_ALSATIAN_FRANCE = 0x01;
+pub const SUBLANG_AMHARIC_ETHIOPIA = 0x01;
+pub const SUBLANG_ARABIC_SAUDI_ARABIA = 0x01;
+pub const SUBLANG_ARABIC_IRAQ = 0x02;
+pub const SUBLANG_ARABIC_EGYPT = 0x03;
+pub const SUBLANG_ARABIC_LIBYA = 0x04;
+pub const SUBLANG_ARABIC_ALGERIA = 0x05;
+pub const SUBLANG_ARABIC_MOROCCO = 0x06;
+pub const SUBLANG_ARABIC_TUNISIA = 0x07;
+pub const SUBLANG_ARABIC_OMAN = 0x08;
+pub const SUBLANG_ARABIC_YEMEN = 0x09;
+pub const SUBLANG_ARABIC_SYRIA = 0x0a;
+pub const SUBLANG_ARABIC_JORDAN = 0x0b;
+pub const SUBLANG_ARABIC_LEBANON = 0x0c;
+pub const SUBLANG_ARABIC_KUWAIT = 0x0d;
+pub const SUBLANG_ARABIC_UAE = 0x0e;
+pub const SUBLANG_ARABIC_BAHRAIN = 0x0f;
+pub const SUBLANG_ARABIC_QATAR = 0x10;
+pub const SUBLANG_ARMENIAN_ARMENIA = 0x01;
+pub const SUBLANG_ASSAMESE_INDIA = 0x01;
+pub const SUBLANG_AZERI_LATIN = 0x01;
+pub const SUBLANG_AZERI_CYRILLIC = 0x02;
+pub const SUBLANG_AZERBAIJANI_AZERBAIJAN_LATIN = 0x01;
+pub const SUBLANG_AZERBAIJANI_AZERBAIJAN_CYRILLIC = 0x02;
+pub const SUBLANG_BANGLA_INDIA = 0x01;
+pub const SUBLANG_BANGLA_BANGLADESH = 0x02;
+pub const SUBLANG_BASHKIR_RUSSIA = 0x01;
+pub const SUBLANG_BASQUE_BASQUE = 0x01;
+pub const SUBLANG_BELARUSIAN_BELARUS = 0x01;
+pub const SUBLANG_BENGALI_INDIA = 0x01;
+pub const SUBLANG_BENGALI_BANGLADESH = 0x02;
+pub const SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_LATIN = 0x05;
+pub const SUBLANG_BOSNIAN_BOSNIA_HERZEGOVINA_CYRILLIC = 0x08;
+pub const SUBLANG_BRETON_FRANCE = 0x01;
+pub const SUBLANG_BULGARIAN_BULGARIA = 0x01;
+pub const SUBLANG_CATALAN_CATALAN = 0x01;
+pub const SUBLANG_CENTRAL_KURDISH_IRAQ = 0x01;
+pub const SUBLANG_CHEROKEE_CHEROKEE = 0x01;
+pub const SUBLANG_CHINESE_TRADITIONAL = 0x01;
+pub const SUBLANG_CHINESE_SIMPLIFIED = 0x02;
+pub const SUBLANG_CHINESE_HONGKONG = 0x03;
+pub const SUBLANG_CHINESE_SINGAPORE = 0x04;
+pub const SUBLANG_CHINESE_MACAU = 0x05;
+pub const SUBLANG_CORSICAN_FRANCE = 0x01;
+pub const SUBLANG_CZECH_CZECH_REPUBLIC = 0x01;
+pub const SUBLANG_CROATIAN_CROATIA = 0x01;
+pub const SUBLANG_CROATIAN_BOSNIA_HERZEGOVINA_LATIN = 0x04;
+pub const SUBLANG_DANISH_DENMARK = 0x01;
+pub const SUBLANG_DARI_AFGHANISTAN = 0x01;
+pub const SUBLANG_DIVEHI_MALDIVES = 0x01;
+pub const SUBLANG_DUTCH = 0x01;
+pub const SUBLANG_DUTCH_BELGIAN = 0x02;
+pub const SUBLANG_ENGLISH_US = 0x01;
+pub const SUBLANG_ENGLISH_UK = 0x02;
+pub const SUBLANG_ENGLISH_AUS = 0x03;
+pub const SUBLANG_ENGLISH_CAN = 0x04;
+pub const SUBLANG_ENGLISH_NZ = 0x05;
+pub const SUBLANG_ENGLISH_EIRE = 0x06;
+pub const SUBLANG_ENGLISH_SOUTH_AFRICA = 0x07;
+pub const SUBLANG_ENGLISH_JAMAICA = 0x08;
+pub const SUBLANG_ENGLISH_CARIBBEAN = 0x09;
+pub const SUBLANG_ENGLISH_BELIZE = 0x0a;
+pub const SUBLANG_ENGLISH_TRINIDAD = 0x0b;
+pub const SUBLANG_ENGLISH_ZIMBABWE = 0x0c;
+pub const SUBLANG_ENGLISH_PHILIPPINES = 0x0d;
+pub const SUBLANG_ENGLISH_INDIA = 0x10;
+pub const SUBLANG_ENGLISH_MALAYSIA = 0x11;
+pub const SUBLANG_ENGLISH_SINGAPORE = 0x12;
+pub const SUBLANG_ESTONIAN_ESTONIA = 0x01;
+pub const SUBLANG_FAEROESE_FAROE_ISLANDS = 0x01;
+pub const SUBLANG_FILIPINO_PHILIPPINES = 0x01;
+pub const SUBLANG_FINNISH_FINLAND = 0x01;
+pub const SUBLANG_FRENCH = 0x01;
+pub const SUBLANG_FRENCH_BELGIAN = 0x02;
+pub const SUBLANG_FRENCH_CANADIAN = 0x03;
+pub const SUBLANG_FRENCH_SWISS = 0x04;
+pub const SUBLANG_FRENCH_LUXEMBOURG = 0x05;
+pub const SUBLANG_FRENCH_MONACO = 0x06;
+pub const SUBLANG_FRISIAN_NETHERLANDS = 0x01;
+pub const SUBLANG_FULAH_SENEGAL = 0x02;
+pub const SUBLANG_GALICIAN_GALICIAN = 0x01;
+pub const SUBLANG_GEORGIAN_GEORGIA = 0x01;
+pub const SUBLANG_GERMAN = 0x01;
+pub const SUBLANG_GERMAN_SWISS = 0x02;
+pub const SUBLANG_GERMAN_AUSTRIAN = 0x03;
+pub const SUBLANG_GERMAN_LUXEMBOURG = 0x04;
+pub const SUBLANG_GERMAN_LIECHTENSTEIN = 0x05;
+pub const SUBLANG_GREEK_GREECE = 0x01;
+pub const SUBLANG_GREENLANDIC_GREENLAND = 0x01;
+pub const SUBLANG_GUJARATI_INDIA = 0x01;
+pub const SUBLANG_HAUSA_NIGERIA_LATIN = 0x01;
+pub const SUBLANG_HAWAIIAN_US = 0x01;
+pub const SUBLANG_HEBREW_ISRAEL = 0x01;
+pub const SUBLANG_HINDI_INDIA = 0x01;
+pub const SUBLANG_HUNGARIAN_HUNGARY = 0x01;
+pub const SUBLANG_ICELANDIC_ICELAND = 0x01;
+pub const SUBLANG_IGBO_NIGERIA = 0x01;
+pub const SUBLANG_INDONESIAN_INDONESIA = 0x01;
+pub const SUBLANG_INUKTITUT_CANADA = 0x01;
+pub const SUBLANG_INUKTITUT_CANADA_LATIN = 0x02;
+pub const SUBLANG_IRISH_IRELAND = 0x02;
+pub const SUBLANG_ITALIAN = 0x01;
+pub const SUBLANG_ITALIAN_SWISS = 0x02;
+pub const SUBLANG_JAPANESE_JAPAN = 0x01;
+pub const SUBLANG_KANNADA_INDIA = 0x01;
+pub const SUBLANG_KASHMIRI_SASIA = 0x02;
+pub const SUBLANG_KASHMIRI_INDIA = 0x02;
+pub const SUBLANG_KAZAK_KAZAKHSTAN = 0x01;
+pub const SUBLANG_KHMER_CAMBODIA = 0x01;
+pub const SUBLANG_KICHE_GUATEMALA = 0x01;
+pub const SUBLANG_KINYARWANDA_RWANDA = 0x01;
+pub const SUBLANG_KONKANI_INDIA = 0x01;
+pub const SUBLANG_KOREAN = 0x01;
+pub const SUBLANG_KYRGYZ_KYRGYZSTAN = 0x01;
+pub const SUBLANG_LAO_LAO = 0x01;
+pub const SUBLANG_LATVIAN_LATVIA = 0x01;
+pub const SUBLANG_LITHUANIAN = 0x01;
+pub const SUBLANG_LOWER_SORBIAN_GERMANY = 0x02;
+pub const SUBLANG_LUXEMBOURGISH_LUXEMBOURG = 0x01;
+pub const SUBLANG_MACEDONIAN_MACEDONIA = 0x01;
+pub const SUBLANG_MALAY_MALAYSIA = 0x01;
+pub const SUBLANG_MALAY_BRUNEI_DARUSSALAM = 0x02;
+pub const SUBLANG_MALAYALAM_INDIA = 0x01;
+pub const SUBLANG_MALTESE_MALTA = 0x01;
+pub const SUBLANG_MAORI_NEW_ZEALAND = 0x01;
+pub const SUBLANG_MAPUDUNGUN_CHILE = 0x01;
+pub const SUBLANG_MARATHI_INDIA = 0x01;
+pub const SUBLANG_MOHAWK_MOHAWK = 0x01;
+pub const SUBLANG_MONGOLIAN_CYRILLIC_MONGOLIA = 0x01;
+pub const SUBLANG_MONGOLIAN_PRC = 0x02;
+pub const SUBLANG_NEPALI_INDIA = 0x02;
+pub const SUBLANG_NEPALI_NEPAL = 0x01;
+pub const SUBLANG_NORWEGIAN_BOKMAL = 0x01;
+pub const SUBLANG_NORWEGIAN_NYNORSK = 0x02;
+pub const SUBLANG_OCCITAN_FRANCE = 0x01;
+pub const SUBLANG_ODIA_INDIA = 0x01;
+pub const SUBLANG_ORIYA_INDIA = 0x01;
+pub const SUBLANG_PASHTO_AFGHANISTAN = 0x01;
+pub const SUBLANG_PERSIAN_IRAN = 0x01;
+pub const SUBLANG_POLISH_POLAND = 0x01;
+pub const SUBLANG_PORTUGUESE = 0x02;
+pub const SUBLANG_PORTUGUESE_BRAZILIAN = 0x01;
+pub const SUBLANG_PULAR_SENEGAL = 0x02;
+pub const SUBLANG_PUNJABI_INDIA = 0x01;
+pub const SUBLANG_PUNJABI_PAKISTAN = 0x02;
+pub const SUBLANG_QUECHUA_BOLIVIA = 0x01;
+pub const SUBLANG_QUECHUA_ECUADOR = 0x02;
+pub const SUBLANG_QUECHUA_PERU = 0x03;
+pub const SUBLANG_ROMANIAN_ROMANIA = 0x01;
+pub const SUBLANG_ROMANSH_SWITZERLAND = 0x01;
+pub const SUBLANG_RUSSIAN_RUSSIA = 0x01;
+pub const SUBLANG_SAKHA_RUSSIA = 0x01;
+pub const SUBLANG_SAMI_NORTHERN_NORWAY = 0x01;
+pub const SUBLANG_SAMI_NORTHERN_SWEDEN = 0x02;
+pub const SUBLANG_SAMI_NORTHERN_FINLAND = 0x03;
+pub const SUBLANG_SAMI_LULE_NORWAY = 0x04;
+pub const SUBLANG_SAMI_LULE_SWEDEN = 0x05;
+pub const SUBLANG_SAMI_SOUTHERN_NORWAY = 0x06;
+pub const SUBLANG_SAMI_SOUTHERN_SWEDEN = 0x07;
+pub const SUBLANG_SAMI_SKOLT_FINLAND = 0x08;
+pub const SUBLANG_SAMI_INARI_FINLAND = 0x09;
+pub const SUBLANG_SANSKRIT_INDIA = 0x01;
+pub const SUBLANG_SCOTTISH_GAELIC = 0x01;
+pub const SUBLANG_SERBIAN_BOSNIA_HERZEGOVINA_LATIN = 0x06;
+pub const SUBLANG_SERBIAN_BOSNIA_HERZEGOVINA_CYRILLIC = 0x07;
+pub const SUBLANG_SERBIAN_MONTENEGRO_LATIN = 0x0b;
+pub const SUBLANG_SERBIAN_MONTENEGRO_CYRILLIC = 0x0c;
+pub const SUBLANG_SERBIAN_SERBIA_LATIN = 0x09;
+pub const SUBLANG_SERBIAN_SERBIA_CYRILLIC = 0x0a;
+pub const SUBLANG_SERBIAN_CROATIA = 0x01;
+pub const SUBLANG_SERBIAN_LATIN = 0x02;
+pub const SUBLANG_SERBIAN_CYRILLIC = 0x03;
+pub const SUBLANG_SINDHI_INDIA = 0x01;
+pub const SUBLANG_SINDHI_PAKISTAN = 0x02;
+pub const SUBLANG_SINDHI_AFGHANISTAN = 0x02;
+pub const SUBLANG_SINHALESE_SRI_LANKA = 0x01;
+pub const SUBLANG_SOTHO_NORTHERN_SOUTH_AFRICA = 0x01;
+pub const SUBLANG_SLOVAK_SLOVAKIA = 0x01;
+pub const SUBLANG_SLOVENIAN_SLOVENIA = 0x01;
+pub const SUBLANG_SPANISH = 0x01;
+pub const SUBLANG_SPANISH_MEXICAN = 0x02;
+pub const SUBLANG_SPANISH_MODERN = 0x03;
+pub const SUBLANG_SPANISH_GUATEMALA = 0x04;
+pub const SUBLANG_SPANISH_COSTA_RICA = 0x05;
+pub const SUBLANG_SPANISH_PANAMA = 0x06;
+pub const SUBLANG_SPANISH_DOMINICAN_REPUBLIC = 0x07;
+pub const SUBLANG_SPANISH_VENEZUELA = 0x08;
+pub const SUBLANG_SPANISH_COLOMBIA = 0x09;
+pub const SUBLANG_SPANISH_PERU = 0x0a;
+pub const SUBLANG_SPANISH_ARGENTINA = 0x0b;
+pub const SUBLANG_SPANISH_ECUADOR = 0x0c;
+pub const SUBLANG_SPANISH_CHILE = 0x0d;
+pub const SUBLANG_SPANISH_URUGUAY = 0x0e;
+pub const SUBLANG_SPANISH_PARAGUAY = 0x0f;
+pub const SUBLANG_SPANISH_BOLIVIA = 0x10;
+pub const SUBLANG_SPANISH_EL_SALVADOR = 0x11;
+pub const SUBLANG_SPANISH_HONDURAS = 0x12;
+pub const SUBLANG_SPANISH_NICARAGUA = 0x13;
+pub const SUBLANG_SPANISH_PUERTO_RICO = 0x14;
+pub const SUBLANG_SPANISH_US = 0x15;
+pub const SUBLANG_SWAHILI_KENYA = 0x01;
+pub const SUBLANG_SWEDISH = 0x01;
+pub const SUBLANG_SWEDISH_FINLAND = 0x02;
+pub const SUBLANG_SYRIAC_SYRIA = 0x01;
+pub const SUBLANG_TAJIK_TAJIKISTAN = 0x01;
+pub const SUBLANG_TAMAZIGHT_ALGERIA_LATIN = 0x02;
+pub const SUBLANG_TAMAZIGHT_MOROCCO_TIFINAGH = 0x04;
+pub const SUBLANG_TAMIL_INDIA = 0x01;
+pub const SUBLANG_TAMIL_SRI_LANKA = 0x02;
+pub const SUBLANG_TATAR_RUSSIA = 0x01;
+pub const SUBLANG_TELUGU_INDIA = 0x01;
+pub const SUBLANG_THAI_THAILAND = 0x01;
+pub const SUBLANG_TIBETAN_PRC = 0x01;
+pub const SUBLANG_TIGRIGNA_ERITREA = 0x02;
+pub const SUBLANG_TIGRINYA_ERITREA = 0x02;
+pub const SUBLANG_TIGRINYA_ETHIOPIA = 0x01;
+pub const SUBLANG_TSWANA_BOTSWANA = 0x02;
+pub const SUBLANG_TSWANA_SOUTH_AFRICA = 0x01;
+pub const SUBLANG_TURKISH_TURKEY = 0x01;
+pub const SUBLANG_TURKMEN_TURKMENISTAN = 0x01;
+pub const SUBLANG_UIGHUR_PRC = 0x01;
+pub const SUBLANG_UKRAINIAN_UKRAINE = 0x01;
+pub const SUBLANG_UPPER_SORBIAN_GERMANY = 0x01;
+pub const SUBLANG_URDU_PAKISTAN = 0x01;
+pub const SUBLANG_URDU_INDIA = 0x02;
+pub const SUBLANG_UZBEK_LATIN = 0x01;
+pub const SUBLANG_UZBEK_CYRILLIC = 0x02;
+pub const SUBLANG_VALENCIAN_VALENCIA = 0x02;
+pub const SUBLANG_VIETNAMESE_VIETNAM = 0x01;
+pub const SUBLANG_WELSH_UNITED_KINGDOM = 0x01;
+pub const SUBLANG_WOLOF_SENEGAL = 0x01;
+pub const SUBLANG_XHOSA_SOUTH_AFRICA = 0x01;
+pub const SUBLANG_YAKUT_RUSSIA = 0x01;
+pub const SUBLANG_YI_PRC = 0x01;
+pub const SUBLANG_YORUBA_NIGERIA = 0x01;
+pub const SUBLANG_ZULU_SOUTH_AFRICA = 0x01;