You don't have to overwrite the old header. Concat any zip files you want and feed them to conforming deconpressors and they correctly extract only the last hea

You don't have to overwrite the old header. Concat any zip files you want and feed them to conforming deconpressors and they correctly extract only the last headers files. If you didn't only look at the last header then you'd have the issue that I can store fake headers as uncompressed content (type 0) and your unzip util would screw up