simplified _toggle_mouse() implementation

.tmux.conf

@@ -215,34 +215,17 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 # }
 #
 # _toggle_mouse() {
-#   if tmux show -g -w | grep -q mode-mouse; then
-#     old=$(tmux show -g -w | grep mode-mouse | cut -d' ' -f2)
-#     new=""
+#   old=$(tmux show -gv mouse)
+#   new=""
 #
-#     if [ "$old" = "on" ]; then
-#       new="off"
-#     else
-#       new="on"
-#     fi
-#
-#     tmux set -g mode-mouse $new \;\
-#          set -g mouse-resize-pane $new \;\
-#          set -g mouse-select-pane $new \;\
-#          set -g mouse-select-window $new \;\
-#          display "mouse: $new"
+#   if [ "$old" = "on" ]; then
+#     new="off"
 #   else
-#     old=$(tmux show -g | grep mouse | head -n 1 | cut -d' ' -f2)
-#     new=""
-#
-#     if [ "$old" = "on" ]; then
-#       new="off"
-#     else
-#       new="on"
-#     fi
-#
-#     tmux set -g mouse $new \;\
-#          display "mouse: $new"
+#     new="on"
 #   fi
+#
+#   tmux set -g mouse $new \;\
+#        display "mouse: $new"
 # }
 #
 # _battery() {