[Evolution-hackers] query string format

[Bill Filler <bill filler canonical com>]

Hello,
Can anyone explain how to format a query string for 
e_cal_get_object_list() that gets ALL tasks in the system_tasks() database?
I tried "#t" and that works for initial query, but then only returns new 
tasks after that when I run it again and I need to get all tasks again. 
I couldn't find any doc on the query string format. Any help would be 
appreciated. Thanks

Bill