- add pathogen.vim (https://github.com/tpope/vim-pathogen)

- add vim-airline (https://github.com/vim-airline/vim-airline)

.vim/bundle/vim-airline/autoload/airline/extensions/tabline/buffers.vim

@@ -0,0 +1,213 @@
+" MIT License. Copyright (c) 2013-2016 Bailey Ling.
+" vim: et ts=2 sts=2 sw=2
+
+scriptencoding utf-8
+
+let s:buffer_idx_mode = get(g:, 'airline#extensions#tabline#buffer_idx_mode', 0)
+let s:show_tab_type = get(g:, 'airline#extensions#tabline#show_tab_type', 1)
+let s:buffers_label = get(g:, 'airline#extensions#tabline#buffers_label', 'buffers')
+let s:spc = g:airline_symbols.space
+
+let s:current_bufnr = -1
+let s:current_modified = 0
+let s:current_tabline = ''
+let s:current_visible_buffers = []
+
+let s:number_map = &encoding == 'utf-8'
+      \ ? {
+      \ '0': '⁰',
+      \ '1': '¹',
+      \ '2': '²',
+      \ '3': '³',
+      \ '4': '⁴',
+      \ '5': '⁵',
+      \ '6': '⁶',
+      \ '7': '⁷',
+      \ '8': '⁸',
+      \ '9': '⁹'
+      \ }
+      \ : {}
+
+function! airline#extensions#tabline#buffers#off()
+  augroup airline_tabline_buffers
+    autocmd!
+  augroup END
+endfunction
+
+function! airline#extensions#tabline#buffers#on()
+  augroup airline_tabline_buffers
+    autocmd!
+    autocmd BufDelete * call airline#extensions#tabline#buffers#invalidate()
+    autocmd User BufMRUChange call airline#extensions#tabline#buflist#invalidate()
+    autocmd User BufMRUChange call airline#extensions#tabline#buffers#invalidate()
+  augroup END
+endfunction
+
+function! airline#extensions#tabline#buffers#invalidate()
+  let s:current_bufnr = -1
+endfunction
+
+function! airline#extensions#tabline#buffers#get()
+  call <sid>map_keys()
+  let cur = bufnr('%')
+  if cur == s:current_bufnr
+    if !g:airline_detect_modified || getbufvar(cur, '&modified') == s:current_modified
+      return s:current_tabline
+    endif
+  endif
+
+  let l:index = 1
+  let b = airline#extensions#tabline#new_builder()
+  let tab_bufs = tabpagebuflist(tabpagenr())
+  for nr in s:get_visible_buffers()
+    if nr < 0
+      call b.add_raw('%#airline_tabhid#...')
+      continue
+    endif
+
+    let group = airline#extensions#tabline#group_of_bufnr(tab_bufs, nr)
+
+    if nr == cur
+      let s:current_modified = (group == 'airline_tabmod') ? 1 : 0
+    endif
+
+    " Neovim feature: Have clickable buffers
+    if has("tablineat")
+      call b.add_raw('%'.nr.'@airline#extensions#tabline#buffers#clickbuf@')
+    endif
+    if s:buffer_idx_mode
+      if len(s:number_map) > 0
+        call b.add_section(group, s:spc . get(s:number_map, l:index, '') . '%(%{airline#extensions#tabline#get_buffer_name('.nr.')}%)' . s:spc)
+      else
+        call b.add_section(group, '['.l:index.s:spc.'%(%{airline#extensions#tabline#get_buffer_name('.nr.')}%)'.']')
+      endif
+      let l:index = l:index + 1
+    else
+      call b.add_section(group, s:spc.'%(%{airline#extensions#tabline#get_buffer_name('.nr.')}%)'.s:spc)
+    endif
+    if has("tablineat")
+      call b.add_raw('%X')
+    endif
+  endfor
+
+  call b.add_section('airline_tabfill', '')
+  call b.split()
+  call b.add_section('airline_tabfill', '')
+  if s:show_tab_type
+    call b.add_section_spaced('airline_tabtype', s:buffers_label)
+  endif
+
+  let s:current_bufnr = cur
+  let s:current_tabline = b.build()
+  return s:current_tabline
+endfunction
+
+function! s:get_visible_buffers()
+  let buffers = airline#extensions#tabline#buflist#list()
+  let cur = bufnr('%')
+
+  let total_width = 0
+  let max_width = 0
+
+  for nr in buffers
+    let width = len(airline#extensions#tabline#get_buffer_name(nr)) + 4
+    let total_width += width
+    let max_width = max([max_width, width])
+  endfor
+
+  " only show current and surrounding buffers if there are too many buffers
+  let position  = index(buffers, cur)
+  let vimwidth = &columns
+  if total_width > vimwidth && position > -1
+    let buf_count = len(buffers)
+
+    " determine how many buffers to show based on the longest buffer width,
+    " use one on the right side and put the rest on the left
+    let buf_max   = vimwidth / max_width
+    let buf_right = 1
+    let buf_left  = max([0, buf_max - buf_right])
+
+    let start = max([0, position - buf_left])
+    let end   = min([buf_count, position + buf_right])
+
+    " fill up available space on the right
+    if position < buf_left
+      let end += (buf_left - position)
+    endif
+
+    " fill up available space on the left
+    if end > buf_count - 1 - buf_right
+      let start -= max([0, buf_right - (buf_count - 1 - position)])
+    endif
+
+    let buffers = eval('buffers[' . start . ':' . end . ']')
+
+    if start > 0
+      call insert(buffers, -1, 0)
+    endif
+
+    if end < buf_count - 1
+      call add(buffers, -1)
+    endif
+  endif
+
+  let s:current_visible_buffers = buffers
+  return buffers
+endfunction
+
+function! s:select_tab(buf_index)
+  " no-op when called in the NERDTree buffer
+  if exists('t:NERDTreeBufName') && bufname('%') == t:NERDTreeBufName
+    return
+  endif
+
+  let idx = a:buf_index
+  if s:current_visible_buffers[0] == -1
+    let idx = idx + 1
+  endif
+
+  let buf = get(s:current_visible_buffers, idx, 0)
+  if buf != 0
+    exec 'b!' . buf
+  endif
+endfunction
+
+function! s:jump_to_tab(offset)
+    let l = s:current_visible_buffers
+    let i = index(l, bufnr('%'))
+    if i > -1
+        exec 'b!' . l[float2nr(fmod(i + a:offset, len(l)))]
+    endif
+endfunction
+
+function! s:map_keys()
+  if s:buffer_idx_mode
+    noremap <silent> <Plug>AirlineSelectTab1 :call <SID>select_tab(0)<CR>
+    noremap <silent> <Plug>AirlineSelectTab2 :call <SID>select_tab(1)<CR>
+    noremap <silent> <Plug>AirlineSelectTab3 :call <SID>select_tab(2)<CR>
+    noremap <silent> <Plug>AirlineSelectTab4 :call <SID>select_tab(3)<CR>
+    noremap <silent> <Plug>AirlineSelectTab5 :call <SID>select_tab(4)<CR>
+    noremap <silent> <Plug>AirlineSelectTab6 :call <SID>select_tab(5)<CR>
+    noremap <silent> <Plug>AirlineSelectTab7 :call <SID>select_tab(6)<CR>
+    noremap <silent> <Plug>AirlineSelectTab8 :call <SID>select_tab(7)<CR>
+    noremap <silent> <Plug>AirlineSelectTab9 :call <SID>select_tab(8)<CR>
+    noremap <silent> <Plug>AirlineSelectPrevTab :<C-u>call <SID>jump_to_tab(-v:count1)<CR>
+    noremap <silent> <Plug>AirlineSelectNextTab :<C-u>call <SID>jump_to_tab(v:count1)<CR>
+  endif
+endfunction
+
+function! airline#extensions#tabline#buffers#clickbuf(minwid, clicks, button, modifiers) abort
+    " Clickable buffers
+    " works only in recent NeoVim with has('tablineat')
+
+    " single mouse button click without modifiers pressed
+    if a:clicks == 1 && a:modifiers !~# '[^ ]'
+      if a:button is# 'l'
+        " left button - switch to buffer
+        silent execute 'buffer' a:minwid
+      elseif a:button is# 'm'
+        " middle button - delete buffer
+        silent execute 'bdelete' a:minwid
+      endif
+    endif
+endfunction