resolved fdo#54344 let date pattern match overrule incomplete format match

Change-Id: I69a0c62ab5b4da036a77bd6c3b2baec0af7c8339
(cherry picked from commit 8041285b)

svl/source/numbers/zforfind.cxx

@@ -1678,11 +1678,21 @@ input for the following reasons:
             {
             case 0:             // not found
             {
-                bool bHadExact;
                 sal_uInt32 nExactDateOrder = (bFormatTurn ?
                                               pFormat->GetExactDateOrder() :
                                               GetDatePatternOrder());
                 bool bIsExact = (0xff < nExactDateOrder && nExactDateOrder <= 0xffff);
+                if (!bIsExact && bFormatTurn && IsAcceptedDatePattern( nNums[0]))
+                {
+                    // If input does not match format but pattern, use pattern
+                    // instead, even if eEDF==NF_EVALDATEFORMAT_FORMAT_INTL.
+                    // For example, format has "Y-M-D" and pattern is "D.M.",
+                    // input with 2 numbers can't match format and 31.12. would
+                    // lead to 1931-12-01 (fdo#54344)
+                    nExactDateOrder = GetDatePatternOrder();
+                    bIsExact = (0xff < nExactDateOrder && nExactDateOrder <= 0xffff);
+                }
+                bool bHadExact;
                 if (bIsExact)
                 {
                     // formatted as date and exactly 2 parts