svn not using gpg-agent

(Not subscribed, please CC me on answers. Thanks!)

Hello,

I suspect this is a user problem somewhere, but since I upgraded to
Ubuntu 16.10 (Subversion 1.9.4 versus 1.9.3 in 16.04) svn has stopped
using GPG-Agent and started using GNOME Keyring to store my password.
As a test, I deleted all GNOME Keyring passwords, deleted the local
.subversion folder and recreated it with "svn --version", changed the
password-stores line to "password-stores = gpg-agent" and updated. The
password was saved to the GNOME Keyring again. For a little bit more
security I would really prefer GPG-Agent though. (For the record, the
GNOME Keyring FAQ seems to disagree with your FAQ about other
applications accessing stored passwords.<1><2> But it seems about the
best option just now. It would be great if svn could fork off a daemon
process itself which would hang around for a while and do the actual
work, but I digress.)

Any ideas welcome.

Thanks!

Michael

$ svn --version
svn, version 1.9.4 (r1740329)
[...]
The following authentication credential caches are available:

* Plaintext cache in /home/michael/.subversion
* Gnome Keyring
* GPG-Agent
* KWallet (KDE)

<1> https://subversion.apache.org/docs/release-notes/1.8.html#gpg-agent
<2> https://wiki.gnome.org/Projects/GnomeKeyring/SecurityFAQ "Can one
application see another application's secrets?"

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