APT does basic syntax checks before moving the files in on most indices. Optional indices are excluded from that, and Translation indices seem to be optional. I do not know why, but David probably does.
APT does check signatures for everything important. I don't know whether that includes translation indices, it does not seem to be the case if those errors happen. But that is not problematic apart from the fact that mergelist fails. It would only get problematic if we crashed or executed code we should not execute.
APT does basic syntax checks before moving the files in on most indices. Optional indices are excluded from that, and Translation indices seem to be optional. I do not know why, but David probably does.
APT does check signatures for everything important. I don't know whether that includes translation indices, it does not seem to be the case if those errors happen. But that is not problematic apart from the fact that mergelist fails. It would only get problematic if we crashed or executed code we should not execute.