let s:tmux_option = '@vim'.substitute($TMUX_PANE, '%', '\\%', 'g') function! tmux#setNavigationFlag() abort call system('tmux set-window-option '.s:tmux_option.' 1') endfunction function! tmux#unsetNavigationFlag() abort call system('tmux set-window-option -u '.s:tmux_option) endfunction