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Re^3: RFC: Edit your posts in a separate page, rather than at the top of a thread. (cached previews)by tye (Sage) |
on Mar 10, 2016 at 01:26 UTC ( [id://1157241]=note: print w/replies, xml ) | Need Help?? |
The 'add' field gets a hidden GUID which, on preview, is used to upsert a row recording the most recent "preview" for each such session. When you post, the new node_id gets recorded in the preview row. Posting when a node_id is already in the preview row either updates the linked node or perhaps offers to. Preview rows from a week ago get purged. One day users can reclaim unposted previews. - tye
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