Updated comments.

.bash_logout

@@ -17,7 +17,7 @@ hash ssh-add ssh-agent >/dev/null 2>&1 && {
   # Determine the platform we're on.
   _PLATFORM="$(uname -s)"
 
-  # Remove the SSH_AUTH_SOCK from the agents file.
+  # Remove the $SSH_AUTH_SOCK from the agents file.
   [[ ! -z "$SSH_AUTH_SOCK" ]] && (( ${_SSH_AGENT_REG_FAILED:-0} == 0 )) && {
     _lock_agents_file && {
       _pop_agent_sock || {

.bash_profile

@@ -34,10 +34,6 @@ fi
 [[ -d "$HOME/.local/bin" ]] && export PATH="$HOME/.local/bin:$PATH"
 [[ -d "$HOME/bin" ]] && export PATH="$HOME/bin:$PATH"
 
-#When registration of connection fails, set a marker in .bash_profile.
-#Check for that marker in .bash_logout and don't remove socket from agents file - would be removing
-#another shells socket.  Will need to clear the marker if subsequently (from prompt_command) find a new socket and reg it.
-
 # Make ssh-agent work better.
 hash ssh-add ssh-agent >/dev/null 2>&1 && {
   if [[ -e "$SSH_AUTH_SOCK" ]]; then

.bashrc

@@ -24,6 +24,7 @@ _agent_prompt_command() {
         _unlock_agents_file
         _SSH_PROMPT_ERROR_ISSUED=0
       else
+        # Failed to find a new socket.
         if [[ -z "$(egrep -v '^$' ~/.ssh/agents)" ]]; then
           ((${_SSH_PROMPT_ERROR_ISSUED:-0} == 0)) && {
             echo "$(tput setaf 1)Lost connection to ssh-agent - no alternate available!$(tput op)"