bug#48137: 27.2; `package-install-file' fails when loading a package file with DOS line endings

[Eli Zaretskii]

> From: Ioannis Kappas <ioannis.kappas@gmail.com>
> Date: Sun, 16 May 2021 10:09:07 +0100
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>, 48137@debbugs.gnu.org
> 
> On Sat, May 15, 2021 at 2:52 PM Ioannis Kappas <ioannis.kappas@gmail.com> 
> wrote:
> > I shall have a look next whether we could always load the package with
> > `insert-file-contents-literally' but parse headers with the correct
> > encoding (`find-operation-coding-system' looks like a promising fn
> > to determine the correct encoding from a literal file buffer).
> 
> Please find below a patch to read package headers from a temporarily
> decoded buffer, while keeping the literal buffer (which will be used
> to install the package) intact.

Stefan, any comments?