test-gpg: start gpg-agent by gpg-connect-agent only if GnuPG v2.1+ detected Danek Duvall found that gpg-connect-agent of GnuPG 2.0 never starts gpg-agent daemon. The 2.1 way is documented as "gpg-coonect-agent /bye" [1], which appears to be different from the 2.0 way [2]. [1]: https://www.gnupg.org/documentation/manuals/gnupg/Invoking-GPG_002dAGENT.html [2]: https://www.gnupg.org/documentation/manuals/gnupg-2.0/Invoking-GPG_002dAGENT.html Since "gpg-agent --daemon" of GnuPG 2.1 never prints environment variables, "eval $(gpg-agent --daemon)" would be valid only for GnuPG < 2.1, and we'll need a different workaround for 2.0. I have no 2.0 environment, I won't implement it.