[plug] ssh passwords

[Cameron Patrick]

Craig Ringer wrote:

> Unfortunately it doesn't seem like ssh uses ssh-askpass when requesting
> a login password, only a key passphrase - otherwise that might have been
> worth exploring.

It does, but (at least on my desktop, Debian ssh 3.8.1p1-8.sarge.4)
ssh and ssh-add only ever use ssh-askpass when DISPLAY is set and it
has no controlling terminal.  I'm not quite sure why.

Cameron.