Fixed more bugs in nested-set where the lack of a common identity-map would not close gap / move correctly. Fix probably reloads lft/rgt more often than needed, but until I clean up the whole implementation (before 0.10) this is better than nothing.
Fixed more bugs in nested-set where the lack of a common identity-map
would not close gap / move correctly. Fix probably reloads lft/rgt
more often than needed, but until I clean up the whole implementation
(before 0.10) this is better than nothing.

datamapper/dm-is-nested_set