Example of tmux config with more than 2 conditional bindings to single key. Useful for vim-tmux-navigation

.tmux.conf

# Smart pane switching with awareness of vim and fzf and ctrlp
forward_programs="view|n?vim?|ctrlp"

should_forward="ps -o state= -o comm= -t '#{pane_tty}' | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?($forward_programs)(diff)?$'"
bind -n C-h if-shell "$should_forward" "send-keys C-h" "run-shell '[ #{pane_at_left} -eq 1 ] && tmux previous-window || tmux select-pane -L'" 
bind -n C-l if-shell "$should_forward" "send-keys C-l" "run-shell '[ #{pane_at_right} -eq 1 ] && tmux next-window || tmux select-pane -R'" 

bind -n C-j if-shell "$should_forward" "send-keys C-j" "select-pane -D"
bind -n C-k if-shell "$should_forward" "send-keys C-k" "select-pane -U"
bind -n C-\ if-shell "$should_forward" "send-keys C-\\" "select-pane -l"