bug#40248: 27.0.90; Failure open .authinfo.gpg from Gnus

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: larsi@gnus.org,  juanjose.garcia.ripoll@csic.es,  40248@debbugs.gnu.org
> Date: Mon, 30 Mar 2020 16:10:34 +0200
> 
>     >> My (admittedly fallible) memory is that gpg always uses UTF-8 for
>     >> non-ASCII data (except for some old versions that %-escape it instead).
> 
>     Eli> Is that true even on MS-Windows?  can someone please verify that?  If
>     Eli> gpg uses UTF-8 on all platforms, the 'undecided' isn't TRT, as in 
> some
>     Eli> cases Emacs could mistakenly decide the encoding is the current 
> system
>     Eli> codepage.  We should use 'utf-8' instead if UTF-8 is guaranteed.
> 
> Having now re-checked it, I was wrong. gpg uses UTF-8 consistenly
> _internally_, but converts to/from whatever it thinks the native
> codepage is (on MS-Windows and unixy platforms).

Thanks.  In that case, 'undecided' is exactly right.