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Re: extracting a zip archive via elisp (with no external executables)

From: Eli Zaretskii
Subject: Re: extracting a zip archive via elisp (with no external executables)
Date: Sun, 09 Jul 2017 23:09:10 +0300

> From: Saulius Menkevičius <address@hidden>
> Date: Sun, 9 Jul 2017 22:49:50 +0300
> Cc: address@hidden,
>  address@hidden,
>  address@hidden
> >     (w32-shell-execute "open" "FILENAME.zip")
> > or
> >     (w32-shell-execute "explore" "FILENAME.zip")
> > 
> > (replace FILENAME.zip with the actual file name).  This will open the
> > Windows Explorer showing the contents of the zip archive, and you
> > should tell your users to click "File->Extract all" to extract the
> > files into the directory of their choosing.
> > 
> >> Instructing the user to install 7-zip or something else manually kind of
> >> invalidates the purpose of automatic installation.
> > 
> > Please never suggest to install 7z, it's not Free Software on Windows
> > (and on Unix it's less capable to make it Free Software).  If someone
> > needs 7z capabilities, the best Free Software alternative is bsdtar
> > from the libarchive project.
> My questions is still, is it possible to avoid involving user in this 
> procedure?

But the user is already involved -- they started the installation to
begin with, didn't they?  So why do you want so hard to avoid them
clicking one more button?

> Or do I need to roll out my own zip parser + extractor in elisp to do so :(
> Which is probably slightly complicated thing to do.. Compared to what I
> am trying to achieve.

Maybe somebody knows how to tell the Explorer to extract the files
without user interaction.  I don't.

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