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The only archiver capable of repacking Firefox's omni.ja

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nihil-admirari/infozip-win-builds

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Info-ZIP builds for Windows

Why?

There is no shortage of ZIP archivers out there, but none seem to be able to repack Firefox's omni.ja. Instructions are provided only for Info-ZIP's zip:

zip -qr9XD omni.ja *

-XD is necessary for the creation of omni.ja-like archives:

-X Do not save extra file attributes.
-D Do not create entries in the zip archive for directories.

Official builds at ftp://ftp.info-zip.org/pub/infozip/win32/ date back to 2008/2009 (x86/x64), and do not include security patches that modern Linux builds have.

Also there are no official ARM64 builds. (Please note, however, that ARM64 builds provided here are completely untested.)

Applied Patches

The following Fedora patches are downloaded along with Info-ZIP sources (other Fedora patches are not relevant on Windows):

Additional Windows-specific patches can be found in the patches directory: