new <prefix> m binding: toggles mouse on or off

.tmux.conf

@@ -49,9 +49,6 @@ set -g status-interval 10     # redraw status line every 10 seconds
 # 24 hour clock
 setw -g clock-mode-style 24
 
-# easier show-messages binding, when ~ is a dead key
-bind m show-messages
-
 # clear both screen and history
 bind -n C-l send-keys C-l \; run 'tmux clear-history'
 
@@ -84,8 +81,6 @@ bind -r l select-pane -R  # move right
 bind > swap-pane -D       # swap current pane with the next one
 bind < swap-pane -U       # swap current pane with the previous one
 
-#set -g mouse-select-pane on # mouse can be used to select a pane
-
 # maximize current pane
 bind + run 'cut -c3- ~/.tmux.conf | sh -s maximize_pane'
 
@@ -94,13 +89,14 @@ bind -r H resize-pane -L 2
 bind -r J resize-pane -D 2
 bind -r K resize-pane -U 2
 bind -r L resize-pane -R 2
-#set -g mouse-resize-pane on # mouse can be used to resize panes
 
 # window navigation
 bind -r C-h previous-window # select previous window
 bind -r C-l next-window     # select next window
 bind Space last-window      # move to last active window
-#set -g mouse-select-window on   # mouse can be used to select a window
+
+# toggle mouse
+bind m run "cut -c3- ~/.tmux.conf | sh -s toggle_mouse"
 
 
 # -- copy mode -----------------------------------------------------------------
@@ -250,4 +246,21 @@ run 'for name in $(printenv | grep -Eo ^tmux_conf_[^=]+); do tmux setenv -gu $na
 #   fi
 # }
 #
+# toggle_mouse() {
+#   old=$(tmux show -g -w | grep mode-mouse | cut -d' ' -f2)
+#   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"
+# }
+#
 # $@