Condition default UTF-8 console I/O for Windows builds on OS version 10 or more. This is to accomodate an IsValidCodePage() API which may happily report CP_UTF8 as a valid code page when the stock console cannot, in fact, do UTF-8 I/O.

FossilOrigin-Name: 6b9b2a886fd4d239c2e87c3f3809c011f77c0f60e0c279bbe4e1d1b53c609e2d

manifest

@@ -1,5 +1,5 @@
-C Limit\sthe\srange\sof\sinteger\sunix\stimestamps\sin\sdate4.test,\ssince\ssome\ssystems\n(RaspberryPI)\scannot\sdeal\swith\stimestamp\svalues\sthat\sexceed\spow(2,31).
-D 2023-10-28T16:19:21.185
+C Condition\sdefault\sUTF-8\sconsole\sI/O\sfor\sWindows\sbuilds\son\sOS\sversion\s10\sor\smore.\sThis\sis\sto\saccomodate\san\sIsValidCodePage()\sAPI\swhich\smay\shappily\sreport\sCP_UTF8\sas\sa\svalid\scode\spage\swhen\sthe\sstock\sconsole\scannot,\sin\sfact,\sdo\sUTF-8\sI/O.
+D 2023-10-29T00:24:22.936
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -722,7 +722,7 @@ F src/random.c 606b00941a1d7dd09c381d3279a058d771f406c5213c9932bbd93d5587be4b9c
 F src/resolve.c 31229276a8eb5b5de1428cd2d80f6f1cf8ffc5248be25e47cf575df12f1b8f23
 F src/rowset.c 8432130e6c344b3401a8874c3cb49fefe6873fec593294de077afea2dce5ec97
 F src/select.c 64c9bc7494f3d220a27498137551762c25458282388ea9ac0a710dd6d5dc1510
-F src/shell.c.in 9b29276cb6447b4c608e77c08b49bd3315cdcb399801e08b2f15723aa5b733e8
+F src/shell.c.in 29b2abb039ddff7b512960a5396cecbaee6ab236537de36f4f972adbfc4467c1
 F src/sqlite.h.in ef0e41e83ad1ac0dcc9ec9939bf541a44b1c5de821bee2d6c61754c3252f3276
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 2f30b2671f4c03cd27a43f039e11251391066c97d11385f5f963bb40b03038ac
@@ -2139,8 +2139,11 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 33ba13c7c4b6f9c5e64ea30c819718f2caea214afca945c9ed7075864f4aaa40
-R 1be0f0e552da136234a76c43155a60a1
-U drh
-Z 9c40aed2a8cf9df874dfb316aa86c044
+P 765290663b28e90a0494997baf023f9610a4ed32f0ff0099bf9fc3d485733fca
+R 06beefd7b5a601159ef2b90a69791f5c
+T *branch * win-utf8-io-split
+T *sym-win-utf8-io-split *
+T -sym-trunk *
+U larrybr
+Z 8b9699cbbd0e4aa806c0f866919f402f
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-765290663b28e90a0494997baf023f9610a4ed32f0ff0099bf9fc3d485733fca
+6b9b2a886fd4d239c2e87c3f3809c011f77c0f60e0c279bbe4e1d1b53c609e2d

src/shell.c.in

@@ -613,6 +613,40 @@ static struct ConsoleState {
 # define _O_U16TEXT 0x20000
 #endif
 
+
+#if !SQLITE_OS_WINRT
+static int CheckAtLeastWin10(void){
+  typedef LONG (WINAPI *REG_OPEN)(HKEY,LPCSTR,DWORD,REGSAM,PHKEY);
+  typedef LSTATUS (WINAPI *REG_READ)(HKEY,LPCSTR,LPCSTR,DWORD,
+                                          LPDWORD,PVOID,LPDWORD);
+  typedef LSTATUS (WINAPI *REG_UNLOAD)(HKEY,LPCSTR);
+  int rv = 0;
+  HINSTANCE hLib = LoadLibrary(TEXT("Advapi32.dll"));
+  if( NULL != hLib ){
+    REG_OPEN rkOpen = (REG_OPEN)GetProcAddress(hLib, "RegOpenKeyExA");
+    REG_READ rkRead = (REG_READ)GetProcAddress(hLib, "RegGetValueA");
+    REG_UNLOAD rkFree = (REG_UNLOAD)GetProcAddress(hLib, "RegUnLoadKeyA");
+    if( rkOpen != NULL && rkRead != NULL && rkFree != NULL ){
+      HKEY hk;
+      const char *zsk = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion";
+      if( ERROR_SUCCESS == rkOpen(HKEY_LOCAL_MACHINE, zsk, 0, KEY_READ, &hk) ){
+        DWORD kv = 0, kvsize = sizeof(kv);
+        if( ERROR_SUCCESS ==  rkRead(hk, 0, "CurrentMajorVersionNumber",
+                                     RRF_RT_REG_DWORD, 0, &kv, &kvsize) ){
+          rv = (kv >= 10);
+        }
+        rkFree(hk, 0);
+      }
+    }
+    FreeLibrary(hLib);
+  }
+  return rv;
+}
+# define IS_WIN10_OR_LATER() CheckAtLeastWin10()
+#else /* defined(SQLITE_OS_WINRT) */
+# define IS_WIN10_OR_LATER() 0
+#endif
+
 /*
 ** Prepare console, (if known to be a WIN32 console), for UTF-8
 ** input (from either typing or suitable paste operations) and/or for
@@ -12210,6 +12244,11 @@ int SQLITE_CDECL wmain(int argc, wchar_t **wargv){
   }
 #endif
 
+#if SHELL_WIN_UTF8_OPT
+  /* If Windows build and not RT, set*/
+  mbcs_opted = (IS_WIN10_OR_LATER())? 0 : 1;
+#endif
+
   /* Do an initial pass through the command-line argument to locate
   ** the name of the database file, the name of the initialization file,
   ** the size of the alternative malloc heap, options affecting commands
@@ -12405,7 +12444,6 @@ int SQLITE_CDECL wmain(int argc, wchar_t **wargv){
       exit(1);
     }
   }
-
 #if SHELL_WIN_UTF8_OPT
   /* Get indicated Windows console setup done before running invocation commands. */
   if( stdin_is_interactive || stdout_is_console ){