GNU bug report logs - #35495
27.0.50; Untarring an archive with a keyring.gpg inside

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Federico Tedin <federicotedin <at> gmail.com>
Cc: 35495 <at> debbugs.gnu.org, Daiki Ueno <ueno <at> unixuser.org>
Subject: bug#35495: 27.0.50; Untarring an archive with a keyring.gpg inside
Date: Fri, 10 May 2019 21:54:03 -0400

> I realize that in this case I'm hard-coding the specific
> file name handlers that *can* be used.

Exactly, it's no better.

> I'm not sure how to express "only use these file handlers" without
> explicitly mentioning them.

Instead, you should state the property you want, and then let each
file-name-handler decide how to handle that property.  E.g.:

    (let ((write-region-provides-raw-file-contents t))
      (write-region ...))

Of course, the problem here is that by using dynamic scoping, this var
will affect all write-regions that will take place during this call,
which might lead to more problems.

Maybe it would be better to have it as an argument to `write-region`, or
to introduce a new function?

Or maybe, not use `write-region` but `copy-file` instead (which already
provides the expected semantics (i.e. it doesn't (un)compress or
(en/de)crypt, IIUC).


        Stefan

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