bug#35739: Bad signature from GNU ELPA

[Stefan Monnier]

>> > Not in detail, it's not an area of expertise of mine. We call
>> > (decode-coding-region (point-min) (point-max) 'undecided) on the
>> > payload of "https://elpa.gnu.org/packages/archive-contents";,
>> > which is raw text. The resulting buffer's buffer-file-coding-
>> > system is iso-latin-1-dos.
>>
>> Indeed, it seems that url-insert-file-contents sets
>> buffer-file-coding-system.  Maybe we can use that in the emacs-26
>> branch.  Can you try the emacs-26 code with the patch below to see if it
>> fixes the current problem?
>>
>
> Yes, it seems to. At least, there's no error from [M-x
> package-list-packages] in emacs -Q.

Thanks Richard for promptly testing it.

Noam, can you confirm that you can also still reproduce the problem in
`emacs-26` and that my patch fixes it when you try it?

Eli, do you think this is safe enough for the `emacs-26` branch?


        Stefan