You're right. The problem is that unrar-free was patched with code from libclamav , but due to unclear license issues it was removed afterward. So this is because unrar-free decompress capability is degraded on recent versions (see references on a previous post).
jordanwb:
You're right. The problem is that unrar-free was patched with code from libclamav , but due to unclear license issues it was removed afterward. So this is because unrar-free decompress capability is degraded on recent versions (see references on a previous post).