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Comment on How are zlib, gzip and zip related?

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Is there an archive format that supports appending diff's of an existing file, so that multiple versions of the same file are stored? PKZIP has a proprietary extension (supposedly), but I couldn't find any open version of that.

(I was thinking of a creating a version control system whose .git directory equivalent is basically an archive file that can easily be emailed, etc.)

New versions of zstd allow you to produce patches using the trained dictionary feature

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