Hi, Currently, statistic cookies do not update when archiving headings. For example, when archiving the 'Two' header in the below example:
* Top [50%] ** TODO One ** DONE Two The status cookie on 'Top' does not get set to [100%]. I have attached a draft patch to add support for this. However, I think it needs a little bit more work. There are 3 archive methods, org-archive-subtree, org-archive-to-archive-sibling, and org-archive-set-tag. For org-archive-set-tag, setting the :ARCHIVE: tag does not seem to affect the status cookie, so I did not touch that. For org-archive-to-archive-sibling, I used the (org-update-parent-todo-statistics) function, which seems to work as expected. For org-archive-subtree, the solution I came up with is a little more complicated, to handle the edge case of archiving the last child header. In this case, 'parent' refers to the wrong (or non-existent) header, so I use a small function to call (org-up-heading-safe) on one header above point, which seems to work even for this edge case. I'm not entirely sure if it's the proper solution though. Let me know if you have any feedback! -Jay
