Google Tasks on iPhone

Anything is better than trashing. It doesn't matter whether you move them to an internal Completed Taks list or hide them until the next sync, as long as they don't go to the trash.

Thanks for replying, and I hope you'll have the time to fix that, because I think it's an important issue, and it can be confusing for people who expect Purge to hide completed tasks.

I understand. However there are technical problems in making it work - they way Google implements "clear" is that they remember completion date for each task and then for each list they mark a certain date as "watermark" - all tasks before that date considered "Cleared".

Now imagine that you completed three tasks on GeeTasks without syncing, then you completed two tasks in Google's Web site and then you sync GeeTasks. What you expect to happen is that the three tasks are cleared and the other two are not, but what will happen is that all five will be cleared. There is no way to preserve both offline functionality and "clear" functionality.

Another problem is that you might have completed 4 tasks in GeeTasks, cleared them and then completed five more tasks. I would have to be careful to replay those operations in the exact order, otherwise all of them will end up cleared - this is not something I currently do and it will be a lot more work.

So there are three options here:

1. Ignore the problem above, and deal with irate people who are missing their "cleared" tasks
2. Make clear only work when you're online so you clearly see what is it that you are clearing.
3. Make "clear" on GeeTasks move tasks to separate "Past accomplishments" list. The problem here is that it will put all tasks from all lists into a single bucket - some people like to keep they accomplished tasks per list.

I'm leaning towards the second option.