tdf#96198 add WEEKNUM_OOO compatibility function, tdf#50950 follow-up

The remaining cases when loading old and wrong ISOWEEKNUM that can't be
mapped to either new WEEKNUM or ISOWEEKNUM now are mapped to
WEEKNUM_OOO(date,mode) with calculations identical to the old and wrong
OOo WEEKNUM.

These WEEKNUM_OOO cases are still wrongly saved as ISOWEEKNUM so can be
read by 5.0 or earlier versions as the old WEEKNUM, which should be
changed for 5.3 or later.

WEEKNUM_OOO is not offered in the Function Wizard to prevent deliberate
usage.

Also reverts the interim unit test change to
sc/qa/unit/data/contentCSV/date-time-functions.csv
that was necessary to catch the error generated by ISOWEEKNUM with two
arguments.

Change-Id: I874c4c7225900f03b879f2947512ae02270cbd4f

1 files changed, 1 insertions, 0 deletions

diff --git a/sc/source/core/tool/interpr4.cxx b/sc/source/core/tool/interpr4.cxx
index 36047f8dc875..ca54487515f6 100644
--- a/sc/source/core/tool/interpr4.cxx
+++ b/sc/source/core/tool/interpr4.cxx
@@ -3701,6 +3701,7 @@ StackVar ScInterpreter::Interpret()
                 case ocGetDayOfWeek     : ScGetDayOfWeek();             break;
                 case ocWeek             : ScGetWeekOfYear();            break;
                 case ocIsoWeeknum       : ScGetIsoWeekOfYear();         break;
+                case ocWeeknumOOo       : ScWeeknumOOo();               break;
                 case ocEasterSunday     : ScEasterSunday();             break;
                 case ocNetWorkdays      : ScNetWorkdays( false);        break;
                 case ocNetWorkdays_MS   : ScNetWorkdays( true );        break;