I want to start working on an auto-updater, so I've been
looking for a WinRAR or WinZip Xtra to extract the archives that
will be downloaded. I've heard that at least one of the two exists,
but I've looked really hard and haven't been able to find either.
If anyone has such an Xtra or knows where I can get one it would be
You already have one - it's part of the default installation:
put interface(xtra "UnzipXtra")
-- "xtra UnzipXtra -- version 10.1.0.r11
new object me -- create a new child instance
UnzipFiles object me, string zipFileName, string
unzip a file.