Subject: bug#8870: Package installer corrupts image & zip files

From: Chong Yidong <[email-masked]>
Date: Sun, 26 Jun 2011 17:01:49 -0400

Jambunathan K <[email-masked]> writes:

> tar-untar-buffer needs to use the right coding system for
> extraction.

Could you verify that a standalone `M-x tar-untar-buffer' (called
outside of package.el) also exhibits the bug?

If so, I think setting coding-system-for-write to no-conversion is
probably the correct fix, indeed.