.zshrc: Use simpler GPG agent config

.zshrc

@@ -114,9 +114,11 @@ genpass() {
     </dev/urandom tr -dc 'A-Za-z0-9!"#$%&'\''()*+,-./:;<=>?@[\]^_`{|}~' | head -c 15 ; echo
 }
 
-# Activate GPG agent and cache the password after first use
-# See: https://github.com/axtl/gpg-agent.zsh
-source ~/src/git/dotfiles/gpg-agent.plugin.zsh
+# set GPG TTY
+export GPG_TTY=$(tty)
+#
+# Refresh gpg-agent tty in case user switches into an X Session
+gpg-connect-agent updatestartuptty /bye >/dev/null
 
 export PATH
 export MANPATH

gpg-agent.plugin.zsh

@@ -1,58 +0,0 @@
-local GPG_DIR="${HOME}/.gnupg"
-local GPG_ENV="${GPG_DIR}/gpg-agent.env"
-local SSH_SOCK=""
-local GPG_SOCK=""
-
-if [[ ! -z "${SSH_AUTH_SOCK}" ]]
-then
-    SSH_SOCK="${GPG_DIR}/$(basename ${SSH_AUTH_SOCK})"
-fi
-
-if [[ ! -z "${GPG_AGENT_INFO}" ]]
-then
-    GPG_SOCK="${GPG_DIR}/$(basename ${GPG_AGENT_INFO} | cut -d : -f1)"
-fi
-
-function _gpg_agent_start() {
-    emulate -L zsh
-    if [[ ! ( -f "${GPG_ENV}" && -S "${SSH_SOCK}" && -S "${GPG_SOCK}" ) ]]; then
-        _gpg_agent_clean
-        # start and source the script
-        eval "$(/usr/bin/env gpg-agent \
-                --quiet \
-                --daemon \
-                --enable-ssh-support \
-                --use-standard-socket \
-                --write-env-file ${GPG_ENV} \
-                2> /dev/null)"
-        chmod 600 "${GPG_ENV}"
-    fi
-
-    source "${GPG_ENV}" 2> /dev/null
-
-    export GPG_AGENT_INFO
-    export SSH_AUTH_SOCK
-    export SSH_AGENT_PID
-
-    GPG_TTY=$(tty)
-    export GPG_TTY
-}
-
-function _gpg_agent_reset() {
-    emulate -L zsh
-    _gpg_agent_clean
-    _gpg_agent_start 
-}
-
-function _gpg_agent_clean () {
-    emulate -L zsh
-    # clear possibly stale things
-    rm "${SSH_SOCK}" 2> /dev/null
-    rm "${GPG_SOCK}" 2> /dev/null
-    rm "${GPG_ENV}" 2> /dev/null
-    killall -9 gpg-agent 2> /dev/null
-    killall -9 ssh-agent 2> /dev/null
-}
-
-
-_gpg_agent_start