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I am trying to add a pop-up note to a compressed zip file. I am archiving some files and I want to put a detailed note that should pop-up when someone tries to unzip it. This is so that the future user knows what they are doing before it is done. Readme files inside compressed files are hardly ever read, so looking for a sure shot way to notify the future user. I do not want to encrypt the data and lose the key or something. The intent is to notify not inhibit the use of the files.
It would be great if we can also prevent the "contextual menu unzipping". Also I am not fixed on zip format, it can be 7z, tar.gz, dmg, other archival formats etc...