BarrelList slicing raises ValueError for negative stop/start and gives wrong results for reverse steps
BarrelList slicing raises ValueError for negative stop/start and gives wrong results for reverse steps: a task in repo2rlenv-swe-next (Harbor dataset). When slicing a BarrelList with negative bounds or a negative step, the results either raise a ValueError or don't match the equivalent plain…
The task
When slicing a `BarrelList` with negative bounds or a negative step, the results either raise a `ValueError` or don't match the equivalent plain Python list slice.
Part of FineEnvs/repo2rlenv-swe-next.