Also this - that the script runs in one step! When I do big deletions in an automated fashion, I always make it a two-step process. The first step identifies

Also this - that the script runs in one step! When I do big deletions in an automated fashion, I always make it a two-step process. The first step identifies exactly the items which will be deleted. This gives you the user a chance to look at it and say, "Why are we deleting 100x as many entries as we expected?" In many tools, this is as simple as running it twice, the first time with `--dry-run`.