bug#22711: 25.0.91; prompt for gpg password is displayed in a dialog box rather than in the minibuffer

[Glenn Morris <rgm@gnu.org>]

Adding pinentry author to cc.

N. Jackson wrote:

> At 17:56 -0500 on Tuesday 2016-02-16, Glenn Morris wrote:
>
>> See http://debbugs.gnu.org/20982 
>
> Thanks Glenn,
>
> I now vaguely remember reading that at the time, but lacked the
> background to follow the discussion. Now I have a bit more context, but
> it's still a bit opaque.
>
> ===
>
> I tried following the instructions in
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20982#20.
>
> I have pinentry version "pinentry-gtk2 (pinentry) 0.9.6" and gpg2 version
> "gpg (GnuPG) 2.1.9".
>
> I put the line
>
>     allow-emacs-pinentry
>
> in ~/.gnupg/gpg-agent.conf (which file did not previously exist).
>
> Then:
>
> 0. emacs -Q &
>
> 1. M-x pinentry-start
>
> 3. C-x C-f myfile.gpg
>
> But I still got the same graphical dialog box for the password prompt.
>
> ===
>
> In NEWS it says:
>
>     ** pinentry.el allows GnuPG passphrase to be prompted through the
>     minibuffer instead of a graphical dialog, depending on whether the gpg
>     command is called from Emacs (i.e., INSIDE_EMACS environment variable
>     is set).  This feature requires newer versions of GnuPG (2.1.5 or
>     later) and Pinentry (0.9.5 or later).
>
> This seems to be what I want, but if I am reading it correctly, it does
> not work.
>
> It seems to say that if the INSIDE_EMACS environment variable is set,
> the gpg password prompt will be displayed in the minibuffer.
>
> I even tried starting Emacs with
>
>     export INSIDE_EMACS=t; emacs &
>
> so INSIDE_EMACS is unequivocally defined, but it doesn't help. Even if I do
>
>     M-x pinentry-start
>
> before opening a .gpg file, I'm still being prompted with a graphical
> dialog box.
>
> ===
>
> There does not seem to be any user documentation for pinentry.el. (There
> is no entry in the Emacs manual for "pinentry" and while there is a
> pinentry info manual, it is for the 'real' (command line) pinentry, not
> for pinentry.el.)