feat(tmux): Add shell environment propagation and refresh function

.tmux.conf

@@ -25,7 +25,7 @@ set-option -g display-panes-colour colour166 #orange
 set-window-option -g clock-mode-colour green #green
 
 # disable DISPLAY requirement when opening pane/window
-set-option -g update-environment "SSH_ASKPASS SSH_AUTH_SOCK SSH_AGENT_PID SSH_CONNECTION WINDOWID XAUTHORITY"
+set-option -g update-environment "SSH_ASKPASS SSH_AUTH_SOCK SSH_AGENT_PID SSH_CONNECTION WINDOWID XAUTHORITY DISPLAY I3SOCK"
 
 set -g status-interval 1
 set -g status-justify centre # center align window list

.zshrc

@@ -118,6 +118,29 @@ function wg-reload() {
     sudo bash -c 'cd /etc/wireguard && wg syncconf $0 <(wg-quick strip $0)' $1
 }
 
+if [ -n "$TMUX" ]; then
+    function refresh {
+        sshauth=$(tmux show-environment | grep "^SSH_AUTH_SOCK")
+        if [ $sshauth ]; then
+            export $sshauth
+        fi
+        display=$(tmux show-environment | grep "^DISPLAY")
+        if [ $display ]; then
+            export $display
+        fi
+        i3sock=$(tmux show-environment | grep "^I3SOCK")
+        if [ $i3sock ]; then
+            export $i3sock
+        fi
+    }
+else
+    function refresh { }
+fi
+
+function preexec {
+    refresh
+}
+
 # Finally, start a tmux session
 [ -x "$(command -v tmux)" ] \
     && [ -z "${TMUX}" ] \