[Remind-Fans] Mother's day in France

[Alain Guibert]

Hello,

How to do a reminder for Mother's day in France, where its definition
is: Last Sunday of May, unless it's Pentecost, then first Sunday of
June. I began with those 3:

REM [trigger(easterdate(year(today()))+49)]	MSG Pentecôte
REM Sun [_last(May)]				MSG Fête des Mères (sauf si Pentecôte)
REM Sun [Week_1] Jun				MSG Fête des Mères (si reportée)

But don't know how to automatically select the good one for years where
Pentecost happen on last Sunday of May (like in 2007 the 27 May).


Thankfully, Alain.