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a6c76d21a2
While the arguments for --filesystem permissions either have to come from a privileged source, or from the manifest which is supposed to be checked by the remote, it was decided that paths are not allowed to move up (..) a directory. The check for this was both too complicated, and not sufficient, because the special directories (e.g. xdg-download) might contain only a single slash (xdg-download/..) and move one directory up.