[kronolith] Recurring event on last Thursday of month

[Andreas Vögele]

Our local user group meets on the second Tuesday and the last Thursday 
of each month. Unfortunately, the pattern "Recurs every [n] month(s) on 
the same weekday" is too limited for events that recur every Thursday at 
the end of the month.

For example, there are five Thursdays in March 2006, four Thursdays in 
April and May and again five Thursdays in June. If I add an event to the 
last Thursday of March that event won't be repeated in April. On the 
other hand, if I add an event to the last week of April that event will 
recur on the fourth Thursday of June, which is not in the last week of June.

I've written write a script that adds our events directly to Kronolith's 
database table as separate events. But IMHO it would be nice if such 
recurring events could be added by using the user interface.

The static text "on the same weekday" could be replaced with an option 
menu that allows one to choose "in the last week" as an alternative if 
the event is in the last week of a month.

Monthly: Recurs every [n] month(s) [on the same weekday
                                     in the last week].

What do you think? Any other suggestions on how to solve this problem? 
Apart from rescheduling our user group meetings :-)