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

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Ioannis Kappas <ioannis.kappas@gmail.com>,  48137@debbugs.gnu.org
> Date: Sat, 29 May 2021 09:59:01 -0400
> 
> >> 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?
> 
> No particular comment from me, except: this is tricky enough that
> it would benefit from some regression tests.

Thanks.  Yes, that's a good idea.  Ioannis, could you perhaps add some
tests, both using existing packages and perhaps also some you concoct
just for testing purposes?