Antonio Scandurra 2e0d051a78 Maintain cursor stack's position correctly when ascending the tree ... This fixes a bug that could cause the cursor to incorrectly report its start when using `slice` or `seek_forward`, and then calling `prev`. We didn't notice this because we were not testing those three methods together. I suppose this could explain some of the panics we've observed because we do use `slice`/`seek_forward` followed by `prev` calls in production.		2023-07-27 12:34:03 +02:00
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cursor.rs
sum_tree.rs
tree_map.rs