I would like to use a --trash feature too, and --snapshot would not really serve my purposes.
My reason for wanting --trash is as a low-maintenance safety-net - I don't have a need to preserve histories of the index file, I just need to not delete many gigabytes if something goes awry. I need the trash moved out of the pool before I commit to deleting it, so I can easily assess what size on disk trash is occupying. Max.
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