Re: cl-defstruct-based package.el, now with ert tests!

[Eli Zaretskii]

> From: Stefan Monnier <address@hidden>
> Date: Fri, 15 Mar 2013 08:56:44 -0400
> Cc: address@hidden
> 
> Of course, another option is to be evil:
> - if there's gunzip, use it.
> - if we're on Windows, download a prebuilt gunzip executable from GNU
>   ELPA (presumably we do have network access since in all likelyhood we
>   just downloaded the targz).
> - if we're not on Windows and there's no gunzip, give up in disgust.

Before the disgust, and actually even before fetching gunzip from
ELPA, I would suggest to probe for bsdtar executable, which can unpack
any archive known to humanity without invoking any external programs.
It is part of the libarchive package.  A Windows port is available (I
use it all the time), so this is a good alternative for Windows as
well.