fix(ZSH): instant prompt - fix error with ssh-agent

.config/zsh/.before.zshrc.zsh

@@ -0,0 +1,26 @@
+#!/usr/bin/env zsh
+
+# Automatic connection
+mkdir -p "${HOME}/etc/ssh";
+function ssh-procure-launch-agent {
+  eval `ssh-agent -s -a ~/etc/ssh/ssh-agent-socket`;
+  ssh-add;
+}
+
+if [ ! $SSH_AGENT_PID ]; then
+  if [ -e ~/etc/ssh/ssh-agent-socket ] ; then
+    SSH_AGENT_PID=`ps -fC ssh-agent |grep 'etc/ssh/ssh-agent-socket' |sed -r 's/^\S+\s+(\S+).*$/\1/'`; 
+    if [[ $SSH_AGENT_PID =~ [0-9]+ ]]; then
+      # in this case the agent has already been launched and we are just attaching to it. 
+      ##++  It should check that this pid is actually active & belongs to an ssh instance
+      export SSH_AGENT_PID;
+      SSH_AUTH_SOCK=~/etc/ssh/ssh-agent-socket; export SSH_AUTH_SOCK;
+    else
+      # in this case there is no agent running, so the socket file is left over from a graceless agent termination.
+      rm ~/etc/ssh/ssh-agent-socket;
+      ssh-procure-launch-agent;
+    fi;
+  else
+    ssh-procure-launch-agent;
+  fi;
+fi;