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

[Stefan Monnier]

>> 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?

No particular comment from me, except: this is tricky enough that
it would benefit from some regression tests.


        Stefan