On Sat, May 29, 2021 at 3:09 PM Eli Zaretskii <eliz@gnu.org> wrote:
>
> > 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?

Please find attached a patch with the earlier fix and two new ert
package tests. `package-test-install-file' tests the installation of
single .el file and a .tar archive packages as referenced from the
test harness. `package-test-install-file-EOLs' rewrites the single .el
package multiple time with different EOL conventions ('unix, 'dos and
'mac), installs them and confirms that they are written verbatim
without modifications to the package directory by comparing that the
md5 hashes of the installing package vs the installed package are the
same.

All package tests pass locally both on GNU/Linux and MS-Windows.

Please feel free to scrutinize the patch and/or make modifications.

Thanks