# Based on ssh-agent code

local GPG_ENV=$HOME/.gnupg/gpg-agent.env

function start_agent {

  /usr/bin/env gpg-agent --daemon --enable-ssh-support --write-env-file ${GPG_ENV} > /dev/null

  chmod 600 ${GPG_ENV}

  . ${GPG_ENV} > /dev/null

}

# Source GPG agent settings, if applicable

if [ -f "${GPG_ENV}" ]; then

  . ${GPG_ENV} > /dev/null

  ps -ef | grep ${SSH_AGENT_PID} | grep gpg-agent > /dev/null || {

    start_agent;

  }

else

  start_agent;

fi

export GPG_AGENT_INFO

export SSH_AUTH_SOCK

export SSH_AGENT_PID

GPG_TTY=$(tty)

export GPG_TTY