Show/hide terminal by pressing F12 in Vim

termtoggle.vim

fun! ToggleTerminal()
    let terms = term_list()
    if terms == []  " no terminals, open one
        botright term
    elseif bufwinnr(terms[0]) == -1  " terminal hidden, show it
        exec 'botright sbuffer' terms[0]
    else " terminal visible, hide it
        exec bufwinnr(terms[0]) .. 'hide'
    endif
endf
map <F12> <Cmd>call ToggleTerminal()<CR>
tmap <F12> <Cmd>call ToggleTerminal()<CR>