How to prevent passphrase caching in 2.1

[Carola Grunwald]

Hi,

is adding

| default-cache-ttl 0

and/or

| max-cache-ttl 0

to gpg-agent.conf the official way to deactivate passphrase caching
completely and make GnuPG only use the term transferred with the
--passphrase option?

Thanks

Caro