msvcrt: Implement %n and %t formats for strftime.

dlls/msvcrt/tests/time.c

@@ -634,11 +634,21 @@ static void test_strftime(void)
     ok(errno==EINVAL || broken(errno==0xdeadbeef), "errno = %d\n", errno);
 
     errno = 0xdeadbeef;
+    retA = p_strftime(bufA, 256, "%n", gmt_tm);
+    ok(retA == 0, "expected 0, got %ld\n", retA);
+    ok(errno==EINVAL || broken(errno==0xdeadbeef), "errno = %d\n", errno);
+
+    errno = 0xdeadbeef;
     retA = p_strftime(bufA, 256, "%R", gmt_tm);
     ok(retA == 0, "expected 0, got %ld\n", retA);
     ok(errno==EINVAL || broken(errno==0xdeadbeef), "errno = %d\n", errno);
 
     errno = 0xdeadbeef;
+    retA = p_strftime(bufA, 256, "%t", gmt_tm);
+    ok(retA == 0, "expected 0, got %ld\n", retA);
+    ok(errno==EINVAL || broken(errno==0xdeadbeef), "errno = %d\n", errno);
+
+    errno = 0xdeadbeef;
     retA = p_strftime(bufA, 256, "%T", gmt_tm);
     ok(retA == 0, "expected 0, got %ld\n", retA);
     ok(errno==EINVAL || broken(errno==0xdeadbeef), "errno = %d\n", errno);

dlls/msvcrt/time.c

@@ -1225,6 +1225,11 @@ static MSVCRT_size_t strftime_helper(char *str, MSVCRT_size_t max, const char *f
             if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
                 return 0;
             break;
+#if _MSVCR_VER>=140
+        case 'n':
+            str[ret++] = '\n';
+            break;
+#endif
         case 'p':
             if(mstm->tm_hour<0 || mstm->tm_hour>23)
                 goto einval_error;
@@ -1247,6 +1252,9 @@ static MSVCRT_size_t strftime_helper(char *str, MSVCRT_size_t max, const char *f
                 return 0;
             break;
 #if _MSVCR_VER>=140
+        case 't':
+            str[ret++] = '\t';
+            break;
         case 'T':
             if(!strftime_int(str, &ret, max, mstm->tm_hour, alternate ? 0 : 2, 0, 23))
                 return 0;

dlls/ucrtbase/tests/misc.c

@@ -942,6 +942,14 @@ static void test_strftime(void)
     retA = p_strftime(bufA, sizeof(bufA), "%h", &epoch);
     ok(retA == 3, "expected 3, got %d\n", (int)retA);
     ok(!strcmp(bufA, "Jan"), "got %s\n", bufA);
+
+    retA = p_strftime(bufA, sizeof(bufA), "%n", &epoch);
+    ok(retA == 1, "expected 1, got %d\n", (int)retA);
+    ok(!strcmp(bufA, "\n"), "got %s\n", bufA);
+
+    retA = p_strftime(bufA, sizeof(bufA), "%t", &epoch);
+    ok(retA == 1, "expected 1, got %d\n", (int)retA);
+    ok(!strcmp(bufA, "\t"), "got %s\n", bufA);
 }
 
 static LONG* get_failures_counter(HANDLE *map)