[pkg-gnupg-maint] Bug#839991: gnupg-agent: 'allow-emacs-pinentry' setting in agent conf makes gpg2 respond no secret key

[Kevin Brubeck Unhammer]

Package: gnupg-agent
Version: 2.1.11-6ubuntu2
Severity: normal

Dear Maintainer,

I followed the instructions of Emacs 25's pinentry.el:

;; To use, add "allow-emacs-pinentry" to "~/.gnupg/gpg-agent.conf",
;; reload the configuration with "gpgconf --reload gpg-agent", and
;; start the server with M-x pinentry-start.

and then I tried "gpg --decrypt ~/.authinfo.gpg" from a regular
terminal (not inside Emacs). This gave me the confusing message "no
secret key", where before it had worked just fine (with a gtk2
pinentry dialog asking for my password).

Removing the "allow-emacs-pinentry" and doing "gpgconf --reload
gpg-agent" makes regular "gpg --decrypt ~/.authinfo.gpg" work again.

If Debian needs to remove Emacs pinentry support from gnupg, it should
probably still have a better error message.

However, from what I can read of
https://bugs.gnupg.org/gnupg/issue2034 (where the reasons for removing
Emacs support are given), all the arguments against support are taken
care of: Bug-dependencies 2057 and 2059 are closed, while 2058 seems
to have turned into feature request not needed for closing 2034.



-- System Information:
Debian Release: stretch/sid
  APT prefers xenial-updates
  APT policy: (500, 'xenial-updates'), (500, 'xenial-security'), (500, 'xenial'), (100, 'xenial-backports')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.4.0-38-generic (SMP w/2 CPU cores)
Locale: LANG=nn_NO.UTF-8, LC_CTYPE=nn_NO.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gnupg-agent depends on:
ii  libassuan0                  2.4.3-1
ii  libc6                       2.23-0ubuntu3
ii  libgcrypt20                 1.6.5-2ubuntu0.2
ii  libgpg-error0               1.21-2ubuntu1
ii  libnpth0                    1.2-3
ii  libreadline6                6.3-8ubuntu2
ii  pinentry-gnome3 [pinentry]  0.9.7-3
ii  pinentry-gtk2 [pinentry]    0.9.7-3

Versions of packages gnupg-agent recommends:
ii  gnupg   1.4.20-1ubuntu3.1
ii  gnupg2  2.1.11-6ubuntu2

gnupg-agent suggests no packages.

-- no debconf information