kernel32: Fix GetCurrencyFormat grouping.

dlls/kernel32/lcformat.c

@@ -1521,7 +1521,7 @@ GetCurrencyFormatW_Error:
 
     dwState |= NF_DIGITS_OUT;
     dwCurrentGroupCount++;
-    if (szSrc >= lpszValue && dwCurrentGroupCount == dwGroupCount)
+    if (szSrc >= lpszValue && dwCurrentGroupCount == dwGroupCount && *szSrc != '-')
     {
       LPWSTR lpszGrp = lpFormat->lpThousandSep + strlenW(lpFormat->lpThousandSep) - 1;
 

dlls/kernel32/tests/locale.c

@@ -743,6 +743,18 @@ static void test_GetCurrencyFormatA(void)
   ok(ret, "Expected ret != 0, got %d, error %d\n", ret, GetLastError());
   EXPECT_LENA; EXPECT_EQA;
 
+  STRINGSA("235","$235.0"); /* Grouping of a positive number */
+  format.Grouping = 3;
+  ret = GetCurrencyFormatA(lcid, 0, input, &format, buffer, COUNTOF(buffer));
+  ok(ret, "Expected ret != 0, got %d, error %d\n", ret, GetLastError());
+  EXPECT_LENA; EXPECT_EQA;
+
+  STRINGSA("-235","$-235.0"); /* Grouping of a negative number */
+  format.NegativeOrder = 2;
+  ret = GetCurrencyFormatA(lcid, 0, input, &format, buffer, COUNTOF(buffer));
+  ok(ret, "Expected ret != 0, got %d, error %d\n", ret, GetLastError());
+  EXPECT_LENA; EXPECT_EQA;
+
   format.LeadingZero = 1; /* Always provide leading zero */
   STRINGSA(".5","$0.5");
   ret = GetCurrencyFormatA(lcid, 0, input, &format, buffer, COUNTOF(buffer));
@@ -990,6 +1002,18 @@ static void test_GetNumberFormatA(void)
   ok(ret, "Expected ret != 0, got %d, error %d\n", ret, GetLastError());
   EXPECT_LENA; EXPECT_EQA;
 
+  STRINGSA("235","235.0"); /* Grouping of a positive number */
+  format.Grouping = 3;
+  ret = GetNumberFormatA(lcid, 0, input, &format, buffer, COUNTOF(buffer));
+  ok(ret, "Expected ret != 0, got %d, error %d\n", ret, GetLastError());
+  EXPECT_LENA; EXPECT_EQA;
+
+  STRINGSA("-235","-235.0"); /* Grouping of a negative number */
+  format.NegativeOrder = NEG_LEFT;
+  ret = GetNumberFormatA(lcid, 0, input, &format, buffer, COUNTOF(buffer));
+  ok(ret, "Expected ret != 0, got %d, error %d\n", ret, GetLastError());
+  EXPECT_LENA; EXPECT_EQA;
+
   format.LeadingZero = 1; /* Always provide leading zero */
   STRINGSA(".5","0.5");
   ret = GetNumberFormatA(lcid, 0, input, &format, buffer, COUNTOF(buffer));