send sentence from vim to below tmux pane.

tmuxSend.vim

function! SendBottomV() range
    let l:selected = getline(a:firstline, a:lastline)
    let result = system("tmux send -t bottom \"". join(l:selected,'\n') ."\n\" 2>&1 | cat")
endfunction

function! SendBottom()
    let result = system("tmux send -t bottom \"". getline(".") ."\n\" 2>&1 | cat")
endfunction

function! ClearBottom()
    let result = system("tmux send -t bottom \"^L\" 2>&1 | cat")
endfunction

function! BsBottom()
    let result = system("tmux send -t bottom \"^U\" 2>&1 | cat")
endfunction