" Does what it sounds like. Opens a gem in a new tab,
" getting the location from 'bundle show <gemname>'

function! s:BundleOpen(Gem) abort
  let path = system('bundle show '.a:Gem)
  if v:shell_error != 0
    echo 'failed to run command'
  else
    exe 'tabedit '.substitute(path, '\v\C\n$', '', '') | :lcd %
  endif
endfunction

" :BO capybara
:command! -nargs=1 BO :call s:BundleOpen(<q-args>)