Right now gloda gets notifications of flag changes, including things like unread->read transitions. It then reindexes the message "normally", which doesn't mean redoing the full-text indexing, but everyhing else is as if it was a new message (or so I understand). The optimization here is to do specific changes to the gloda indices when we know the precise nature of the changes, e.g. a message being read.

don't you love it when i file dupes of my own bugs? Indexing isn't _that_ fast on slow machines, and if we get things like "show in conversation" in the message header, then messages-that-aren't-indexed might be more problematic than today. But I'm confused: "I'm somewhat reluctant to pursue this since it seems likely to shoot reasonable extensions in the foot." -- which kind of extension would be broken?

(In reply to comment #2) > Indexing isn't _that_ fast on slow machines, and if we get things like "show in > conversation" in the message header, then messages-that-aren't-indexed might be > more problematic than today. From out-of-band discussion, glodaquilla is not going to actually show immediately when the message gets indexed. We only set the headers once we perform a SQLite commit, which tends to prefer to wait for idle or at least a number of seconds. Additionally, you need to move the mouse to cause a repaint of the tree-view. The larger problem is that event-driven indexing does not interrupt long-running batch indexing. That definitely should be dealt with. > But I'm confused: "I'm somewhat reluctant to pursue this since it seems likely > to shoot reasonable extensions in the foot." -- which kind of extension would > be broken? Anything that depended on the state of the changed flags. For example, something that added a new attribute because you replied to a message. Perhaps it uses the fact that you replied to run a computationally expensive topic analysis on the text of the message. Or because you starred a message, etc. Since we only let you mutate the gloda message representation during indexing, it is important that we actually index it.