*Description of problem:

Result of patch --help command is:

    --rollback-to        - The argument does not expect any value and is
                           optional. The default is 'false'.
                           If the patch to rollback is a one-off patch, it
                           signifies that the rollback operation will also
                           rollback all the other one-off patches that have
                           been applied on top of the patch to rollback.

It's not obvious that --rollback-to is specific only to one-off patches. Also it's not so obvious that --patch-id should be used with --rollback-to. Some users tries to do: patch rollback --rollback-to=patch-id ...