It would be beneficial for `rm` to have a way for making `trash` mode the default mode of operation. Unix shell is prone to errors like this beyond all reason. And nobody would die typing:

  fs.delete(shell.expand('*'), recursive:yes)
  fs.undo()

or something like that with completion helpers. Our instruments usually lack any safety in general, and making them safe is hard, especially when you're just a worker and not a safety expert. All the world today benefits from mistake-friendly software, except for developers who constantly walk on ui minefields.