linktotag.vim

function! s:linktotag()
  let tag = system("curl -s -F 'link=" . g:linktotag_link . "' https://linktotag.herokuapp.com")
  execute ':normal! a ' . tag
  call setpos('.', getpos('.'))
endfunction
command! -nargs=? Linktotag :call s:linktotag()

let g:linktotag_link = 'http://soramugi.tumblr.com/random'
:Linktotag