My ~/.tmux.conf

.tmux.conf

set -g mouse on

bind -n WheelUpPane if-shell -F -t = "#{mouse_any_flag}" "send-keys -M" "if -Ft= '#{pane_in_mode}' 'send-keys -M' 'select-pane -t=; copy-mode -e; send-keys -M'"
bind -n WheelDownPane select-pane -t= \; send-keys -M

bind-key -n S-Up resize-pane -U 5
bind-key -n S-Down resize-pane -D 5
bind-key -n S-Left resize-pane -L 5
bind-key -n S-Right resize-pane -R 5

set-window-option -g xterm-keys on

set -s escape-time 0