bind b break-pane
# Split another pane into this window.
bind B command-prompt -p "Select [<window>.]<pane> to join:" 'join-pane -s %1'
bind b break-pane
# Split another pane into this window.
bind B command-prompt -p "Select [<window>.]<pane> to join:" 'join-pane -s %1'