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Re: [found the culprit]

From: Stefan Monnier
Subject: Re: [found the culprit]
Date: Wed, 14 Nov 2018 11:39:56 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

> It seems I misunderstood your original report: you wanted Z on a .tgz
> file to only uncompress it?  That indeed has been changed in Emacs 26,
> for consistency with a .tar.gz file.  I don't think it's a good idea
> to have the previous subtle difference back.


> I do think that Z on a compressed Tar archive, be it a .tar.gz or .tgz
> file, should not by default unpack the archive.  We could have a
> special prefix arg to request that, and by default we should just
> uncompress the file.  But that's a different issue.

FWIW, I consider ".tar.gz" (or "tar.lz", ...) as the archive format
(rather than as a combination of tar and compression): since the tar
format does not support random access anyway there's very little benefit
to having it uncompressed (unless the content can't be compressed
e.g. because it's already compressed).


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