Addendum fix for #136

- Apply --tabstop=1 to line completion
- Fix incorrect --nth

Related: #139, #136

autoload/fzf/vim/complete.vim

@@ -141,10 +141,12 @@ endfunction
 
 
 function! fzf#vim#complete#line(...)
+  let [display_bufnames, lines] = fzf#vim#_lines(0)
+  let nth = display_bufnames ? 4 : 3
   return fzf#vim#complete(s:extend({
   \ 'prefix':  '^.*$',
-  \ 'source':  fzf#vim#_lines(0),
-  \ 'options': '--tiebreak=index --ansi --nth 4..',
+  \ 'source':  lines,
+  \ 'options': '--tiebreak=index --ansi --nth '.nth.'.. --tabstop=1',
   \ 'reducer': s:function('s:reduce_line')}, get(a:000, 0, g:fzf#vim#default_layout)))
 endfunction