bug#35495: 27.0.50; Untarring an archive with a keyring.gpg inside

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: federicotedin@gmail.com,  35495@debbugs.gnu.org,  ueno@unixuser.org
> Date: Sun, 12 May 2019 11:23:26 -0400
> 
> IOW since we don't have any
> `insert-file-contents-literally-but-please-do-the-coding-system-decoding`,
> I don't think we want a `write-region-literally-but-not-quite`.

The use cases are quite different, so analogies are not necessarily
helpful in designing the new primitive.

But okay, I guess when/if a suitable use case comes up, we can always
change this later.