diff --git a/autoload/fzf/vim.vim b/autoload/fzf/vim.vim
index dc036e0..00feaf1 100644
--- a/autoload/fzf/vim.vim
+++ b/autoload/fzf/vim.vim
@@ -194,14 +194,9 @@ function! fzf#vim#_lines(all)
   let rest = []
   let buf = bufnr('')
   for b in s:buflisted()
-    let lines = getbufline(b, 1, "$")
-    if empty(lines)
-      let path = fnamemodify(bufname(b), ':p')
-      let lines = filereadable(path) ? readfile(path) : []
-    endif
     call extend(b == buf ? cur : rest,
     \ filter(
-    \   map(lines,
+    \   map(getbufline(b, 1, "$"),
     \       '(!a:all && empty(v:val)) ? "" : printf("[%s]\t%s:\t%s", s:blue(b), s:yellow(v:key + 1), v:val)'),
     \   'a:all || !empty(v:val)'))
   endfor
@@ -418,7 +413,7 @@ endfunction
 " query, [[ag options], options]
 function! fzf#vim#ag(query, ...)
   let args = copy(a:000)
-  let ag_opts = len(args) > 1 ? remove(args, 0) : get(g:, 'fzf_ag_options', '')
+  let ag_opts = len(args) > 1 ? remove(args, 0) : ''
   return s:fzf(fzf#vim#wrap({
   \ 'source':  printf('ag --nogroup --column --color %s "%s"',
   \                   ag_opts,