add .vimrc

9 files changed, 2491 insertions, 0 deletions

diff --git a/vim/.vim/autoload/plug.vim b/vim/.vim/autoload/plug.vim
new file mode 100644
index 0000000..0d0e409
--- /dev/null
+++ b/vim/.vim/autoload/plug.vim
@@ -0,0 +1,2267 @@
+" vim-plug: Vim plugin manager
+" ============================
+"
+" Download plug.vim and put it in ~/.vim/autoload
+"
+"   curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
+"     https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+"
+" Edit your .vimrc
+"
+"   call plug#begin('~/.vim/plugged')
+"
+"   " Make sure you use single quotes
+"
+"   " Shorthand notation; fetches https://github.com/junegunn/vim-easy-align
+"   Plug 'junegunn/vim-easy-align'
+"
+"   " Any valid git URL is allowed
+"   Plug 'https://github.com/junegunn/vim-github-dashboard.git'
+"
+"   " Group dependencies, vim-snippets depends on ultisnips
+"   Plug 'SirVer/ultisnips' | Plug 'honza/vim-snippets'
+"
+"   " On-demand loading
+"   Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
+"   Plug 'tpope/vim-fireplace', { 'for': 'clojure' }
+"
+"   " Using a non-master branch
+"   Plug 'rdnetto/YCM-Generator', { 'branch': 'stable' }
+"
+"   " Using a tagged release; wildcard allowed (requires git 1.9.2 or above)
+"   Plug 'fatih/vim-go', { 'tag': '*' }
+"
+"   " Plugin options
+"   Plug 'nsf/gocode', { 'tag': 'v.20150303', 'rtp': 'vim' }
+"
+"   " Plugin outside ~/.vim/plugged with post-update hook
+"   Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
+"
+"   " Unmanaged plugin (manually installed and updated)
+"   Plug '~/my-prototype-plugin'
+"
+"   " Add plugins to &runtimepath
+"   call plug#end()
+"
+" Then reload .vimrc and :PlugInstall to install plugins.
+"
+" Plug options:
+"
+"| Option                  | Description                                      |
+"| ----------------------- | ------------------------------------------------ |
+"| `branch`/`tag`/`commit` | Branch/tag/commit of the repository to use       |
+"| `rtp`                   | Subdirectory that contains Vim plugin            |
+"| `dir`                   | Custom directory for the plugin                  |
+"| `as`                    | Use different name for the plugin                |
+"| `do`                    | Post-update hook (string or funcref)             |
+"| `on`                    | On-demand loading: Commands or `<Plug>`-mappings |
+"| `for`                   | On-demand loading: File types                    |
+"| `frozen`                | Do not update unless explicitly specified        |
+"
+" More information: https://github.com/junegunn/vim-plug
+"
+"
+" Copyright (c) 2016 Junegunn Choi
+"
+" MIT License
+"
+" Permission is hereby granted, free of charge, to any person obtaining
+" a copy of this software and associated documentation files (the
+" "Software"), to deal in the Software without restriction, including
+" without limitation the rights to use, copy, modify, merge, publish,
+" distribute, sublicense, and/or sell copies of the Software, and to
+" permit persons to whom the Software is furnished to do so, subject to
+" the following conditions:
+"
+" The above copyright notice and this permission notice shall be
+" included in all copies or substantial portions of the Software.
+"
+" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+" NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+" LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+" OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+" WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+if exists('g:loaded_plug')
+  finish
+endif
+let g:loaded_plug = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let s:plug_src = 'https://github.com/junegunn/vim-plug.git'
+let s:plug_tab = get(s:, 'plug_tab', -1)
+let s:plug_buf = get(s:, 'plug_buf', -1)
+let s:mac_gui = has('gui_macvim') && has('gui_running')
+let s:is_win = has('win32') || has('win64')
+let s:nvim = has('nvim') && exists('*jobwait') && !s:is_win
+let s:me = resolve(expand('<sfile>:p'))
+let s:base_spec = { 'branch': 'master', 'frozen': 0 }
+let s:TYPE = {
+\   'string':  type(''),
+\   'list':    type([]),
+\   'dict':    type({}),
+\   'funcref': type(function('call'))
+\ }
+let s:loaded = get(s:, 'loaded', {})
+let s:triggers = get(s:, 'triggers', {})
+
+function! plug#begin(...)
+  if a:0 > 0
+    let s:plug_home_org = a:1
+    let home = s:path(fnamemodify(expand(a:1), ':p'))
+  elseif exists('g:plug_home')
+    let home = s:path(g:plug_home)
+  elseif !empty(&rtp)
+    let home = s:path(split(&rtp, ',')[0]) . '/plugged'
+  else
+    return s:err('Unable to determine plug home. Try calling plug#begin() with a path argument.')
+  endif
+
+  let g:plug_home = home
+  let g:plugs = {}
+  let g:plugs_order = []
+  let s:triggers = {}
+
+  call s:define_commands()
+  return 1
+endfunction
+
+function! s:define_commands()
+  command! -nargs=+ -bar Plug call plug#(<args>)
+  if !executable('git')
+    return s:err('`git` executable not found. Most commands will not be available. To suppress this message, prepend `silent!` to `call plug#begin(...)`.')
+  endif
+  command! -nargs=* -bar -bang -complete=customlist,s:names PlugInstall call s:install(<bang>0, [<f-args>])
+  command! -nargs=* -bar -bang -complete=customlist,s:names PlugUpdate  call s:update(<bang>0, [<f-args>])
+  command! -nargs=0 -bar -bang PlugClean call s:clean(<bang>0)
+  command! -nargs=0 -bar PlugUpgrade if s:upgrade() | execute 'source' s:esc(s:me) | endif
+  command! -nargs=0 -bar PlugStatus  call s:status()
+  command! -nargs=0 -bar PlugDiff    call s:diff()
+  command! -nargs=? -bar -bang -complete=file PlugSnapshot call s:snapshot(<bang>0, <f-args>)
+endfunction
+
+function! s:to_a(v)
+  return type(a:v) == s:TYPE.list ? a:v : [a:v]
+endfunction
+
+function! s:to_s(v)
+  return type(a:v) == s:TYPE.string ? a:v : join(a:v, "\n") . "\n"
+endfunction
+
+function! s:glob(from, pattern)
+  return s:lines(globpath(a:from, a:pattern))
+endfunction
+
+function! s:source(from, ...)
+  let found = 0
+  for pattern in a:000
+    for vim in s:glob(a:from, pattern)
+      execute 'source' s:esc(vim)
+      let found = 1
+    endfor
+  endfor
+  return found
+endfunction
+
+function! s:assoc(dict, key, val)
+  let a:dict[a:key] = add(get(a:dict, a:key, []), a:val)
+endfunction
+
+function! s:ask(message)
+  call inputsave()
+  echohl WarningMsg
+  let proceed = input(a:message.' (y/N) ') =~? '^y'
+  echohl None
+  call inputrestore()
+  echo "\r"
+  return proceed
+endfunction
+
+function! plug#end()
+  if !exists('g:plugs')
+    return s:err('Call plug#begin() first')
+  endif
+
+  if exists('#PlugLOD')
+    augroup PlugLOD
+      autocmd!
+    augroup END
+    augroup! PlugLOD
+  endif
+  let lod = { 'ft': {}, 'map': {}, 'cmd': {} }
+
+  filetype off
+  for name in g:plugs_order
+    if !has_key(g:plugs, name)
+      continue
+    endif
+    let plug = g:plugs[name]
+    if get(s:loaded, name, 0) || !has_key(plug, 'on') && !has_key(plug, 'for')
+      let s:loaded[name] = 1
+      continue
+    endif
+
+    if has_key(plug, 'on')
+      let s:triggers[name] = { 'map': [], 'cmd': [] }
+      for cmd in s:to_a(plug.on)
+        if cmd =~? '^<Plug>.\+'
+          if empty(mapcheck(cmd)) && empty(mapcheck(cmd, 'i'))
+            call s:assoc(lod.map, cmd, name)
+          endif
+          call add(s:triggers[name].map, cmd)
+        elseif cmd =~# '^[A-Z]'
+          if exists(':'.cmd) != 2
+            call s:assoc(lod.cmd, cmd, name)
+          endif
+          call add(s:triggers[name].cmd, cmd)
+        else
+          call s:err('Invalid `on` option: '.cmd.
+          \ '. Should start with an uppercase letter or `<Plug>`.')
+        endif
+      endfor
+    endif
+
+    if has_key(plug, 'for')
+      let types = s:to_a(plug.for)
+      if !empty(types)
+        augroup filetypedetect
+        call s:source(s:rtp(plug), 'ftdetect/**/*.vim', 'after/ftdetect/**/*.vim')
+        augroup END
+      endif
+      for type in types
+        call s:assoc(lod.ft, type, name)
+      endfor
+    endif
+  endfor
+
+  for [cmd, names] in items(lod.cmd)
+    execute printf(
+    \ 'command! -nargs=* -range -bang %s call s:lod_cmd(%s, "<bang>", <line1>, <line2>, <q-args>, %s)',
+    \ cmd, string(cmd), string(names))
+  endfor
+
+  for [map, names] in items(lod.map)
+    for [mode, map_prefix, key_prefix] in
+          \ [['i', '<C-O>', ''], ['n', '', ''], ['v', '', 'gv'], ['o', '', '']]
+      execute printf(
+      \ '%snoremap <silent> %s %s:<C-U>call <SID>lod_map(%s, %s, "%s")<CR>',
+      \ mode, map, map_prefix, string(map), string(names), key_prefix)
+    endfor
+  endfor
+
+  for [ft, names] in items(lod.ft)
+    augroup PlugLOD
+      execute printf('autocmd FileType %s call <SID>lod_ft(%s, %s)',
+            \ ft, string(ft), string(names))
+    augroup END
+  endfor
+
+  call s:reorg_rtp()
+  filetype plugin indent on
+  if has('vim_starting')
+    if has('syntax') && !exists('g:syntax_on')
+      syntax enable
+    end
+  else
+    call s:reload()
+  endif
+endfunction
+
+function! s:loaded_names()
+  return filter(copy(g:plugs_order), 'get(s:loaded, v:val, 0)')
+endfunction
+
+function! s:reload()
+  for name in s:loaded_names()
+    call s:source(s:rtp(g:plugs[name]), 'plugin/**/*.vim', 'after/plugin/**/*.vim')
+  endfor
+endfunction
+
+function! s:trim(str)
+  return substitute(a:str, '[\/]\+$', '', '')
+endfunction
+
+function! s:version_requirement(val, min)
+  for idx in range(0, len(a:min) - 1)
+    let v = get(a:val, idx, 0)
+    if     v < a:min[idx] | return 0
+    elseif v > a:min[idx] | return 1
+    endif
+  endfor
+  return 1
+endfunction
+
+function! s:git_version_requirement(...)
+  if !exists('s:git_version')
+    let s:git_version = map(split(split(s:system('git --version'))[-1], '\.'), 'str2nr(v:val)')
+  endif
+  return s:version_requirement(s:git_version, a:000)
+endfunction
+
+function! s:progress_opt(base)
+  return a:base && !s:is_win &&
+        \ s:git_version_requirement(1, 7, 1) ? '--progress' : ''
+endfunction
+
+if s:is_win
+  function! s:rtp(spec)
+    return s:path(a:spec.dir . get(a:spec, 'rtp', ''))
+  endfunction
+
+  function! s:path(path)
+    return s:trim(substitute(a:path, '/', '\', 'g'))
+  endfunction
+
+  function! s:dirpath(path)
+    return s:path(a:path) . '\'
+  endfunction
+
+  function! s:is_local_plug(repo)
+    return a:repo =~? '^[a-z]:\|^[%~]'
+  endfunction
+else
+  function! s:rtp(spec)
+    return s:dirpath(a:spec.dir . get(a:spec, 'rtp', ''))
+  endfunction
+
+  function! s:path(path)
+    return s:trim(a:path)
+  endfunction
+
+  function! s:dirpath(path)
+    return substitute(a:path, '[/\\]*$', '/', '')
+  endfunction
+
+  function! s:is_local_plug(repo)
+    return a:repo[0] =~ '[/$~]'
+  endfunction
+endif
+
+function! s:err(msg)
+  echohl ErrorMsg
+  echom '[vim-plug] '.a:msg
+  echohl None
+endfunction
+
+function! s:warn(cmd, msg)
+  echohl WarningMsg
+  execute a:cmd 'a:msg'
+  echohl None
+endfunction
+
+function! s:esc(path)
+  return escape(a:path, ' ')
+endfunction
+
+function! s:escrtp(path)
+  return escape(a:path, ' ,')
+endfunction
+
+function! s:remove_rtp()
+  for name in s:loaded_names()
+    let rtp = s:rtp(g:plugs[name])
+    execute 'set rtp-='.s:escrtp(rtp)
+    let after = globpath(rtp, 'after')
+    if isdirectory(after)
+      execute 'set rtp-='.s:escrtp(after)
+    endif
+  endfor
+endfunction
+
+function! s:reorg_rtp()
+  if !empty(s:first_rtp)
+    execute 'set rtp-='.s:first_rtp
+    execute 'set rtp-='.s:last_rtp
+  endif
+
+  " &rtp is modified from outside
+  if exists('s:prtp') && s:prtp !=# &rtp
+    call s:remove_rtp()
+    unlet! s:middle
+  endif
+
+  let s:middle = get(s:, 'middle', &rtp)
+  let rtps     = map(s:loaded_names(), 's:rtp(g:plugs[v:val])')
+  let afters   = filter(map(copy(rtps), 'globpath(v:val, "after")'), 'isdirectory(v:val)')
+  let rtp      = join(map(rtps, 'escape(v:val, ",")'), ',')
+                 \ . ','.s:middle.','
+                 \ . join(map(afters, 'escape(v:val, ",")'), ',')
+  let &rtp     = substitute(substitute(rtp, ',,*', ',', 'g'), '^,\|,$', '', 'g')
+  let s:prtp   = &rtp
+
+  if !empty(s:first_rtp)
+    execute 'set rtp^='.s:first_rtp
+    execute 'set rtp+='.s:last_rtp
+  endif
+endfunction
+
+function! s:doautocmd(...)
+  if exists('#'.join(a:000, '#'))
+    execute 'doautocmd' ((v:version > 703 || has('patch442')) ? '<nomodeline>' : '') join(a:000)
+  endif
+endfunction
+
+function! s:dobufread(names)
+  for name in a:names
+    let path = s:rtp(g:plugs[name]).'/**'
+    for dir in ['ftdetect', 'ftplugin']
+      if len(finddir(dir, path))
+        return s:doautocmd('BufRead')
+      endif
+    endfor
+  endfor
+endfunction
+
+function! plug#load(...)
+  if a:0 == 0
+    return s:err('Argument missing: plugin name(s) required')
+  endif
+  if !exists('g:plugs')
+    return s:err('plug#begin was not called')
+  endif
+  let unknowns = filter(copy(a:000), '!has_key(g:plugs, v:val)')
+  if !empty(unknowns)
+    let s = len(unknowns) > 1 ? 's' : ''
+    return s:err(printf('Unknown plugin%s: %s', s, join(unknowns, ', ')))
+  end
+  for name in a:000
+    call s:lod([name], ['ftdetect', 'after/ftdetect', 'plugin', 'after/plugin'])
+  endfor
+  call s:dobufread(a:000)
+  return 1
+endfunction
+
+function! s:remove_triggers(name)
+  if !has_key(s:triggers, a:name)
+    return
+  endif
+  for cmd in s:triggers[a:name].cmd
+    execute 'silent! delc' cmd
+  endfor
+  for map in s:triggers[a:name].map
+    execute 'silent! unmap' map
+    execute 'silent! iunmap' map
+  endfor
+  call remove(s:triggers, a:name)
+endfunction
+
+function! s:lod(names, types, ...)
+  for name in a:names
+    call s:remove_triggers(name)
+    let s:loaded[name] = 1
+  endfor
+  call s:reorg_rtp()
+
+  for name in a:names
+    let rtp = s:rtp(g:plugs[name])
+    for dir in a:types
+      call s:source(rtp, dir.'/**/*.vim')
+    endfor
+    if a:0
+      if !s:source(rtp, a:1) && !empty(s:glob(rtp, a:2))
+        execute 'runtime' a:1
+      endif
+      call s:source(rtp, a:2)
+    endif
+    call s:doautocmd('User', name)
+  endfor
+endfunction
+
+function! s:lod_ft(pat, names)
+  let syn = 'syntax/'.a:pat.'.vim'
+  call s:lod(a:names, ['plugin', 'after/plugin'], syn, 'after/'.syn)
+  execute 'autocmd! PlugLOD FileType' a:pat
+  call s:doautocmd('filetypeplugin', 'FileType')
+  call s:doautocmd('filetypeindent', 'FileType')
+endfunction
+
+function! s:lod_cmd(cmd, bang, l1, l2, args, names)
+  call s:lod(a:names, ['ftdetect', 'after/ftdetect', 'plugin', 'after/plugin'])
+  call s:dobufread(a:names)
+  execute printf('%s%s%s %s', (a:l1 == a:l2 ? '' : (a:l1.','.a:l2)), a:cmd, a:bang, a:args)
+endfunction
+
+function! s:lod_map(map, names, prefix)
+  call s:lod(a:names, ['ftdetect', 'after/ftdetect', 'plugin', 'after/plugin'])
+  call s:dobufread(a:names)
+  let extra = ''
+  while 1
+    let c = getchar(0)
+    if c == 0
+      break
+    endif
+    let extra .= nr2char(c)
+  endwhile
+  if v:count
+    call feedkeys(v:count, 'n')
+  endif
+  call feedkeys('"'.v:register, 'n')
+  if mode(1) == 'no'
+    call feedkeys(v:operator)
+  endif
+  call feedkeys(a:prefix . substitute(a:map, '^<Plug>', "\<Plug>", '') . extra)
+endfunction
+
+function! plug#(repo, ...)
+  if a:0 > 1
+    return s:err('Invalid number of arguments (1..2)')
+  endif
+
+  try
+    let repo = s:trim(a:repo)
+    let opts = a:0 == 1 ? s:parse_options(a:1) : s:base_spec
+    let name = get(opts, 'as', fnamemodify(repo, ':t:s?\.git$??'))
+    let spec = extend(s:infer_properties(name, repo), opts)
+    if !has_key(g:plugs, name)
+      call add(g:plugs_order, name)
+    endif
+    let g:plugs[name] = spec
+    let s:loaded[name] = get(s:loaded, name, 0)
+  catch
+    return s:err(v:exception)
+  endtry
+endfunction
+
+function! s:parse_options(arg)
+  let opts = copy(s:base_spec)
+  let type = type(a:arg)
+  if type == s:TYPE.string
+    let opts.tag = a:arg
+  elseif type == s:TYPE.dict
+    call extend(opts, a:arg)
+    if has_key(opts, 'dir')
+      let opts.dir = s:dirpath(expand(opts.dir))
+    endif
+  else
+    throw 'Invalid argument type (expected: string or dictionary)'
+  endif
+  return opts
+endfunction
+
+function! s:infer_properties(name, repo)
+  let repo = a:repo
+  if s:is_local_plug(repo)
+    return { 'dir': s:dirpath(expand(repo)) }
+  else
+    if repo =~ ':'
+      let uri = repo
+    else
+      if repo !~ '/'
+        let repo = 'vim-scripts/'. repo
+      endif
+      let fmt = get(g:, 'plug_url_format', 'https://git::@github.com/%s.git')
+      let uri = printf(fmt, repo)
+    endif
+    let dir = s:dirpath( fnamemodify(join([g:plug_home, a:name], '/'), ':p') )
+    return { 'dir': dir, 'uri': uri }
+  endif
+endfunction
+
+function! s:install(force, names)
+  call s:update_impl(0, a:force, a:names)
+endfunction
+
+function! s:update(force, names)
+  call s:update_impl(1, a:force, a:names)
+endfunction
+
+function! plug#helptags()
+  if !exists('g:plugs')
+    return s:err('plug#begin was not called')
+  endif
+  for spec in values(g:plugs)
+    let docd = join([spec.dir, 'doc'], '/')
+    if isdirectory(docd)
+      silent! execute 'helptags' s:esc(docd)
+    endif
+  endfor
+  return 1
+endfunction
+
+function! s:syntax()
+  syntax clear
+  syntax region plug1 start=/\%1l/ end=/\%2l/ contains=plugNumber
+  syntax region plug2 start=/\%2l/ end=/\%3l/ contains=plugBracket,plugX
+  syn match plugNumber /[0-9]\+[0-9.]*/ contained
+  syn match plugBracket /[[\]]/ contained
+  syn match plugX /x/ contained
+  syn match plugDash /^-/
+  syn match plugPlus /^+/
+  syn match plugStar /^*/
+  syn match plugMessage /\(^- \)\@<=.*/
+  syn match plugName /\(^- \)\@<=[^ ]*:/
+  syn match plugSha /\%(: \)\@<=[0-9a-f]\{4,}$/
+  syn match plugTag /(tag: [^)]\+)/
+  syn match plugInstall /\(^+ \)\@<=[^:]*/
+  syn match plugUpdate /\(^* \)\@<=[^:]*/
+  syn match plugCommit /^  \X*[0-9a-f]\{7} .*/ contains=plugRelDate,plugEdge,plugTag
+  syn match plugEdge /^  \X\+$/
+  syn match plugEdge /^  \X*/ contained nextgroup=plugSha
+  syn match plugSha /[0-9a-f]\{7}/ contained
+  syn match plugRelDate /([^)]*)$/ contained
+  syn match plugNotLoaded /(not loaded)$/
+  syn match plugError /^x.*/
+  syn match plugH2 /^.*:\n-\+$/
+  syn keyword Function PlugInstall PlugStatus PlugUpdate PlugClean
+  hi def link plug1       Title
+  hi def link plug2       Repeat
+  hi def link plugH2      Type
+  hi def link plugX       Exception
+  hi def link plugBracket Structure
+  hi def link plugNumber  Number
+
+  hi def link plugDash    Special
+  hi def link plugPlus    Constant
+  hi def link plugStar    Boolean
+
+  hi def link plugMessage Function
+  hi def link plugName    Label
+  hi def link plugInstall Function
+  hi def link plugUpdate  Type
+
+  hi def link plugError   Error
+  hi def link plugRelDate Comment
+  hi def link plugEdge    PreProc
+  hi def link plugSha     Identifier
+  hi def link plugTag     Constant
+
+  hi def link plugNotLoaded Comment
+endfunction
+
+function! s:lpad(str, len)
+  return a:str . repeat(' ', a:len - len(a:str))
+endfunction
+
+function! s:lines(msg)
+  return split(a:msg, "[\r\n]")
+endfunction
+
+function! s:lastline(msg)
+  return get(s:lines(a:msg), -1, '')
+endfunction
+
+function! s:new_window()
+  execute get(g:, 'plug_window', 'vertical topleft new')
+endfunction
+
+function! s:plug_window_exists()
+  let buflist = tabpagebuflist(s:plug_tab)
+  return !empty(buflist) && index(buflist, s:plug_buf) >= 0
+endfunction
+
+function! s:switch_in()
+  if !s:plug_window_exists()
+    return 0
+  endif
+
+  if winbufnr(0) != s:plug_buf
+    let s:pos = [tabpagenr(), winnr(), winsaveview()]
+    execute 'normal!' s:plug_tab.'gt'
+    let winnr = bufwinnr(s:plug_buf)
+    execute winnr.'wincmd w'
+    call add(s:pos, winsaveview())
+  else
+    let s:pos = [winsaveview()]
+  endif
+
+  setlocal modifiable
+  return 1
+endfunction
+
+function! s:switch_out(...)
+  call winrestview(s:pos[-1])
+  setlocal nomodifiable
+  if a:0 > 0
+    execute a:1
+  endif
+
+  if len(s:pos) > 1
+    execute 'normal!' s:pos[0].'gt'
+    execute s:pos[1] 'wincmd w'
+    call winrestview(s:pos[2])
+  endif
+endfunction
+
+function! s:finish_bindings()
+  nnoremap <silent> <buffer> R  :call <SID>retry()<cr>
+  nnoremap <silent> <buffer> D  :PlugDiff<cr>
+  nnoremap <silent> <buffer> S  :PlugStatus<cr>
+  nnoremap <silent> <buffer> U  :call <SID>status_update()<cr>
+  xnoremap <silent> <buffer> U  :call <SID>status_update()<cr>
+  nnoremap <silent> <buffer> ]] :silent! call <SID>section('')<cr>
+  nnoremap <silent> <buffer> [[ :silent! call <SID>section('b')<cr>
+endfunction
+
+function! s:prepare(...)
+  if empty(getcwd())
+    throw 'Invalid current working directory. Cannot proceed.'
+  endif
+
+  call s:job_abort()
+  if s:switch_in()
+    normal q
+  endif
+
+  call s:new_window()
+  nnoremap <silent> <buffer> q  :if b:plug_preview==1<bar>pc<bar>endif<bar>bd<cr>
+  if a:0 == 0
+    call s:finish_bindings()
+  endif
+  let b:plug_preview = -1
+  let s:plug_tab = tabpagenr()
+  let s:plug_buf = winbufnr(0)
+  call s:assign_name()
+
+  silent! unmap <buffer> <cr>
+  silent! unmap <buffer> L
+  silent! unmap <buffer> o
+  silent! unmap <buffer> X
+  setlocal buftype=nofile bufhidden=wipe nobuflisted noswapfile nowrap cursorline modifiable
+  setf vim-plug
+  if exists('g:syntax_on')
+    call s:syntax()
+  endif
+endfunction
+
+function! s:assign_name()
+  " Assign buffer name
+  let prefix = '[Plugins]'
+  let name   = prefix
+  let idx    = 2
+  while bufexists(name)
+    let name = printf('%s (%s)', prefix, idx)
+    let idx = idx + 1
+  endwhile
+  silent! execute 'f' fnameescape(name)
+endfunction
+
+function! s:chsh(swap)
+  let prev = [&shell, &shellredir]
+  if !s:is_win && a:swap
+    set shell=sh shellredir=>%s\ 2>&1
+  endif
+  return prev
+endfunction
+
+function! s:bang(cmd, ...)
+  try
+    let [sh, shrd] = s:chsh(a:0)
+    " FIXME: Escaping is incomplete. We could use shellescape with eval,
+    "        but it won't work on Windows.
+    let cmd = a:0 ? s:with_cd(a:cmd, a:1) : a:cmd
+    let g:_plug_bang = '!'.escape(cmd, '#!%')
+    execute "normal! :execute g:_plug_bang\<cr>\<cr>"
+  finally
+    unlet g:_plug_bang
+    let [&shell, &shellredir] = [sh, shrd]
+  endtry
+  return v:shell_error ? 'Exit status: ' . v:shell_error : ''
+endfunction
+
+function! s:regress_bar()
+  let bar = substitute(getline(2)[1:-2], '.*\zs=', 'x', '')
+  call s:progress_bar(2, bar, len(bar))
+endfunction
+
+function! s:is_updated(dir)
+  return !empty(s:system_chomp('git log --pretty=format:"%h" "HEAD...HEAD@{1}"', a:dir))
+endfunction
+
+function! s:do(pull, force, todo)
+  for [name, spec] in items(a:todo)
+    if !isdirectory(spec.dir)
+      continue
+    endif
+    let installed = has_key(s:update.new, name)
+    let updated = installed ? 0 :
+      \ (a:pull && index(s:update.errors, name) < 0 && s:is_updated(spec.dir))
+    if a:force || installed || updated
+      execute 'cd' s:esc(spec.dir)
+      call append(3, '- Post-update hook for '. name .' ... ')
+      let error = ''
+      let type = type(spec.do)
+      if type == s:TYPE.string
+        let error = s:bang(spec.do)
+      elseif type == s:TYPE.funcref
+        try
+          let status = installed ? 'installed' : (updated ? 'updated' : 'unchanged')
+          call spec.do({ 'name': name, 'status': status, 'force': a:force })
+        catch
+          let error = v:exception
+        endtry
+      else
+        let error = 'Invalid hook type'
+      endif
+      call s:switch_in()
+      call setline(4, empty(error) ? (getline(4) . 'OK')
+                                 \ : ('x' . getline(4)[1:] . error))
+      if !empty(error)
+        call add(s:update.errors, name)
+        call s:regress_bar()
+      endif
+      cd -
+    endif
+  endfor
+endfunction
+
+function! s:hash_match(a, b)
+  return stridx(a:a, a:b) == 0 || stridx(a:b, a:a) == 0
+endfunction
+
+function! s:checkout(spec)
+  let sha = a:spec.commit
+  let output = s:system('git rev-parse HEAD', a:spec.dir)
+  if !v:shell_error && !s:hash_match(sha, s:lines(output)[0])
+    let output = s:system(
+          \ 'git fetch --depth 999999 && git checkout '.s:esc(sha), a:spec.dir)
+  endif
+  return output
+endfunction
+
+function! s:finish(pull)
+  let new_frozen = len(filter(keys(s:update.new), 'g:plugs[v:val].frozen'))
+  if new_frozen
+    let s = new_frozen > 1 ? 's' : ''
+    call append(3, printf('- Installed %d frozen plugin%s', new_frozen, s))
+  endif
+  call append(3, '- Finishing ... ') | 4
+  redraw
+  call plug#helptags()
+  call plug#end()
+  call setline(4, getline(4) . 'Done!')
+  redraw
+  let msgs = []
+  if !empty(s:update.errors)
+    call add(msgs, "Press 'R' to retry.")
+  endif
+  if a:pull && len(s:update.new) < len(filter(getline(5, '$'),
+                \ "v:val =~ '^- ' && stridx(v:val, 'Already up-to-date') < 0"))
+    call add(msgs, "Press 'D' to see the updated changes.")
+  endif
+  echo join(msgs, ' ')
+  call s:finish_bindings()
+endfunction
+
+function! s:retry()
+  if empty(s:update.errors)
+    return
+  endif
+  echo
+  call s:update_impl(s:update.pull, s:update.force,
+        \ extend(copy(s:update.errors), [s:update.threads]))
+endfunction
+
+function! s:is_managed(name)
+  return has_key(g:plugs[a:name], 'uri')
+endfunction
+
+function! s:names(...)
+  return sort(filter(keys(g:plugs), 'stridx(v:val, a:1) == 0 && s:is_managed(v:val)'))
+endfunction
+
+function! s:check_ruby()
+  silent! ruby require 'thread'; VIM::command("let g:plug_ruby = '#{RUBY_VERSION}'")
+  if !exists('g:plug_ruby')
+    redraw!
+    return s:warn('echom', 'Warning: Ruby interface is broken')
+  endif
+  let ruby_version = split(g:plug_ruby, '\.')
+  unlet g:plug_ruby
+  return s:version_requirement(ruby_version, [1, 8, 7])
+endfunction
+
+function! s:update_impl(pull, force, args) abort
+  let args = copy(a:args)
+  let threads = (len(args) > 0 && args[-1] =~ '^[1-9][0-9]*$') ?
+                  \ remove(args, -1) : get(g:, 'plug_threads', 16)
+
+  let managed = filter(copy(g:plugs), 's:is_managed(v:key)')
+  let todo = empty(args) ? filter(managed, '!v:val.frozen || !isdirectory(v:val.dir)') :
+                         \ filter(managed, 'index(args, v:key) >= 0')
+
+  if empty(todo)
+    return s:warn('echo', 'No plugin to '. (a:pull ? 'update' : 'install'))
+  endif
+
+  if !s:is_win && s:git_version_requirement(2, 3)
+    let s:git_terminal_prompt = exists('$GIT_TERMINAL_PROMPT') ? $GIT_TERMINAL_PROMPT : ''
+    let $GIT_TERMINAL_PROMPT = 0
+    for plug in values(todo)
+      let plug.uri = substitute(plug.uri,
+            \ '^https://git::@github\.com', 'https://github.com', '')
+    endfor
+  endif
+
+  if !isdirectory(g:plug_home)
+    try
+      call mkdir(g:plug_home, 'p')
+    catch
+      return s:err(printf('Invalid plug directory: %s. '.
+              \ 'Try to call plug#begin with a valid directory', g:plug_home))
+    endtry
+  endif
+
+  if has('nvim') && !exists('*jobwait') && threads > 1
+    call s:warn('echom', '[vim-plug] Update Neovim for parallel installer')
+  endif
+
+  let python = (has('python') || has('python3')) && (!s:nvim || has('vim_starting'))
+  let ruby = has('ruby') && !s:nvim && (v:version >= 703 || v:version == 702 && has('patch374')) && !(s:is_win && has('gui_running')) && s:check_ruby()
+
+  let s:update = {
+    \ 'start':   reltime(),
+    \ 'all':     todo,
+    \ 'todo':    copy(todo),
+    \ 'errors':  [],
+    \ 'pull':    a:pull,
+    \ 'force':   a:force,
+    \ 'new':     {},
+    \ 'threads': (python || ruby || s:nvim) ? min([len(todo), threads]) : 1,
+    \ 'bar':     '',
+    \ 'fin':     0
+  \ }
+
+  call s:prepare(1)
+  call append(0, ['', ''])
+  normal! 2G
+  silent! redraw
+
+  let s:clone_opt = get(g:, 'plug_shallow', 1) ?
+        \ '--depth 1' . (s:git_version_requirement(1, 7, 10) ? ' --no-single-branch' : '') : ''
+
+  " Python version requirement (>= 2.7)
+  if python && !has('python3') && !ruby && !s:nvim && s:update.threads > 1
+    redir => pyv
+    silent python import platform; print platform.python_version()
+    redir END
+    let python = s:version_requirement(
+          \ map(split(split(pyv)[0], '\.'), 'str2nr(v:val)'), [2, 6])
+  endif
+
+  if (python || ruby) && s:update.threads > 1
+    try
+      let imd = &imd
+      if s:mac_gui
+        set noimd
+      endif
+      if ruby
+        call s:update_ruby()
+      else
+        call s:update_python()
+      endif
+    catch
+      let lines = getline(4, '$')
+      let printed = {}
+      silent! 4,$d _
+      for line in lines
+        let name = s:extract_name(line, '.', '')
+        if empty(name) || !has_key(printed, name)
+          call append('$', line)
+          if !empty(name)
+            let printed[name] = 1
+            if line[0] == 'x' && index(s:update.errors, name) < 0
+              call add(s:update.errors, name)
+            end
+          endif
+        endif
+      endfor
+    finally
+      let &imd = imd
+      call s:update_finish()
+    endtry
+  else
+    call s:update_vim()
+  endif
+endfunction
+
+function! s:log4(name, msg)
+  call setline(4, printf('- %s (%s)', a:msg, a:name))
+  redraw
+endfunction
+
+function! s:update_finish()
+  if exists('s:git_terminal_prompt')
+    let $GIT_TERMINAL_PROMPT = s:git_terminal_prompt
+  endif
+  if s:switch_in()
+    call append(3, '- Updating ...') | 4
+    for [name, spec] in items(filter(copy(s:update.all), 'index(s:update.errors, v:key) < 0 && (s:update.force || s:update.pull || has_key(s:update.new, v:key))'))
+      let pos = s:logpos(name)
+      if !pos
+        continue
+      endif
+      if has_key(spec, 'commit')
+        call s:log4(name, 'Checking out '.spec.commit)
+        let out = s:checkout(spec)
+      elseif has_key(spec, 'tag')
+        let tag = spec.tag
+        if tag =~ '\*'
+          let tags = s:lines(s:system('git tag --list '.string(tag).' --sort -version:refname 2>&1', spec.dir))
+          if !v:shell_error && !empty(tags)
+            let tag = tags[0]
+            call s:log4(name, printf('Latest tag for %s -> %s', spec.tag, tag))
+            call append(3, '')
+          endif
+        endif
+        call s:log4(name, 'Checking out '.tag)
+        let out = s:system('git checkout -q '.s:esc(tag).' 2>&1', spec.dir)
+      else
+        let branch = s:esc(get(spec, 'branch', 'master'))
+        call s:log4(name, 'Merging origin/'.branch)
+        let out = s:system('git checkout -q '.branch.' 2>&1'
+              \. (has_key(s:update.new, name) ? '' : ('&& git merge --ff-only origin/'.branch.' 2>&1')), spec.dir)
+      endif
+      if !v:shell_error && filereadable(spec.dir.'/.gitmodules') &&
+            \ (s:update.force || has_key(s:update.new, name) || s:is_updated(spec.dir))
+        call s:log4(name, 'Updating submodules. This may take a while.')
+        let out .= s:bang('git submodule update --init --recursive 2>&1', spec.dir)
+      endif
+      let msg = printf('%s %s: %s', v:shell_error ? 'x': '-', name, s:lastline(out))
+      if v:shell_error
+        call add(s:update.errors, name)
+        call s:regress_bar()
+        execute pos 'd _'
+        call append(4, msg) | 4
+      elseif !empty(out)
+        call setline(pos, msg)
+      endif
+      redraw
+    endfor
+    4 d _
+    call s:do(s:update.pull, s:update.force, filter(copy(s:update.all), 'index(s:update.errors, v:key) < 0 && has_key(v:val, "do")'))
+    call s:finish(s:update.pull)
+    call setline(1, 'Updated. Elapsed time: ' . split(reltimestr(reltime(s:update.start)))[0] . ' sec.')
+    call s:switch_out('normal! gg')
+  endif
+endfunction
+
+function! s:job_abort()
+  if !s:nvim || !exists('s:jobs')
+    return
+  endif
+
+  for [name, j] in items(s:jobs)
+    silent! call jobstop(j.jobid)
+    if j.new
+      call s:system('rm -rf ' . s:shellesc(g:plugs[name].dir))
+    endif
+  endfor
+  let s:jobs = {}
+endfunction
+
+" When a:event == 'stdout', data = list of strings
+" When a:event == 'exit', data = returncode
+function! s:job_handler(job_id, data, event) abort
+  if !s:plug_window_exists() " plug window closed
+    return s:job_abort()
+  endif
+
+  if a:event == 'stdout'
+    let complete = empty(a:data[-1])
+    let lines = map(filter(a:data, 'len(v:val) > 0'), 'split(v:val, "[\r\n]")[-1]')
+    call extend(self.lines, lines)
+    let self.result = join(self.lines, "\n")
+    if !complete
+      call remove(self.lines, -1)
+    endif
+    " To reduce the number of buffer updates
+    let self.tick = get(self, 'tick', -1) + 1
+    if self.tick % len(s:jobs) == 0
+      call s:log(self.new ? '+' : '*', self.name, self.result)
+    endif
+  elseif a:event == 'exit'
+    let self.running = 0
+    if a:data != 0
+      let self.error = 1
+    endif
+    call s:reap(self.name)
+    call s:tick()
+  endif
+endfunction
+
+function! s:spawn(name, cmd, opts)
+  let job = { 'name': a:name, 'running': 1, 'error': 0, 'lines': [], 'result': '',
+            \ 'new': get(a:opts, 'new', 0),
+            \ 'on_stdout': function('s:job_handler'),
+            \ 'on_exit' : function('s:job_handler'),
+            \ }
+  let s:jobs[a:name] = job
+
+  if s:nvim
+    let argv = [ 'sh', '-c',
+               \ (has_key(a:opts, 'dir') ? s:with_cd(a:cmd, a:opts.dir) : a:cmd) ]
+    let jid = jobstart(argv, job)
+    if jid > 0
+      let job.jobid = jid
+    else
+      let job.running = 0
+      let job.error   = 1
+      let job.result  = jid < 0 ? 'sh is not executable' :
+            \ 'Invalid arguments (or job table is full)'
+    endif
+  else
+    let params = has_key(a:opts, 'dir') ? [a:cmd, a:opts.dir] : [a:cmd]
+    let job.result = call('s:system', params)
+    let job.error = v:shell_error != 0
+    let job.running = 0
+  endif
+endfunction
+
+function! s:reap(name)
+  let job = s:jobs[a:name]
+  if job.error
+    call add(s:update.errors, a:name)
+  elseif get(job, 'new', 0)
+    let s:update.new[a:name] = 1
+  endif
+  let s:update.bar .= job.error ? 'x' : '='
+
+  call s:log(job.error ? 'x' : '-', a:name, empty(job.result) ? 'OK' : job.result)
+  call s:bar()
+
+  call remove(s:jobs, a:name)
+endfunction
+
+function! s:bar()
+  if s:switch_in()
+    let total = len(s:update.all)
+    call setline(1, (s:update.pull ? 'Updating' : 'Installing').
+          \ ' plugins ('.len(s:update.bar).'/'.total.')')
+    call s:progress_bar(2, s:update.bar, total)
+    call s:switch_out()
+  endif
+endfunction
+
+function! s:logpos(name)
+  for i in range(4, line('$'))
+    if getline(i) =~# '^[-+x*] '.a:name.':'
+      return i
+    endif
+  endfor
+endfunction
+
+function! s:log(bullet, name, lines)
+  if s:switch_in()
+    let pos = s:logpos(a:name)
+    if pos > 0
+      execute pos 'd _'
+      if pos > winheight('.')
+        let pos = 4
+      endif
+    else
+      let pos = 4
+    endif
+    call append(pos - 1, s:format_message(a:bullet, a:name, a:lines))
+    call s:switch_out()
+  endif
+endfunction
+
+function! s:update_vim()
+  let s:jobs = {}
+
+  call s:bar()
+  call s:tick()
+endfunction
+
+function! s:tick()
+  let pull = s:update.pull
+  let prog = s:progress_opt(s:nvim)
+while 1 " Without TCO, Vim stack is bound to explode
+  if empty(s:update.todo)
+    if empty(s:jobs) && !s:update.fin
+      let s:update.fin = 1
+      call s:update_finish()
+    endif
+    return
+  endif
+
+  let name = keys(s:update.todo)[0]
+  let spec = remove(s:update.todo, name)
+  let new  = !isdirectory(spec.dir)
+
+  call s:log(new ? '+' : '*', name, pull ? 'Updating ...' : 'Installing ...')
+  redraw
+
+  let has_tag = has_key(spec, 'tag')
+  if !new
+    let [error, _] = s:git_validate(spec, 0)
+    if empty(error)
+      if pull
+        let fetch_opt = (has_tag && !empty(globpath(spec.dir, '.git/shallow'))) ? '--depth 99999999' : ''
+        call s:spawn(name, printf('git fetch %s %s 2>&1', fetch_opt, prog), { 'dir': spec.dir })
+      else
+        let s:jobs[name] = { 'running': 0, 'result': 'Already installed', 'error': 0 }
+      endif
+    else
+      let s:jobs[name] = { 'running': 0, 'result': error, 'error': 1 }
+    endif
+  else
+    call s:spawn(name,
+          \ printf('git clone %s %s %s %s 2>&1',
+          \ has_tag ? '' : s:clone_opt,
+          \ prog,
+          \ s:shellesc(spec.uri),
+          \ s:shellesc(s:trim(spec.dir))), { 'new': 1 })
+  endif
+
+  if !s:jobs[name].running
+    call s:reap(name)
+  endif
+  if len(s:jobs) >= s:update.threads
+    break
+  endif
+endwhile
+endfunction
+
+function! s:update_python()
+let py_exe = has('python') ? 'python' : 'python3'
+execute py_exe "<< EOF"
+import datetime
+import functools
+import os
+try:
+  import queue
+except ImportError:
+  import Queue as queue
+import random
+import re
+import shutil
+import signal
+import subprocess
+import tempfile
+import threading as thr
+import time
+import traceback
+import vim
+
+G_NVIM = vim.eval("has('nvim')") == '1'
+G_PULL = vim.eval('s:update.pull') == '1'
+G_RETRIES = int(vim.eval('get(g:, "plug_retries", 2)')) + 1
+G_TIMEOUT = int(vim.eval('get(g:, "plug_timeout", 60)'))
+G_CLONE_OPT = vim.eval('s:clone_opt')
+G_PROGRESS = vim.eval('s:progress_opt(1)')
+G_LOG_PROB = 1.0 / int(vim.eval('s:update.threads'))
+G_STOP = thr.Event()
+G_IS_WIN = vim.eval('s:is_win') == '1'
+
+class PlugError(Exception):
+  def __init__(self, msg):
+    self.msg = msg
+class CmdTimedOut(PlugError):
+  pass
+class CmdFailed(PlugError):
+  pass
+class InvalidURI(PlugError):
+  pass
+class Action(object):
+  INSTALL, UPDATE, ERROR, DONE = ['+', '*', 'x', '-']
+
+class Buffer(object):
+  def __init__(self, lock, num_plugs, is_pull):
+    self.bar = ''
+    self.event = 'Updating' if is_pull else 'Installing'
+    self.lock = lock
+    self.maxy = int(vim.eval('winheight(".")'))
+    self.num_plugs = num_plugs
+
+  def __where(self, name):
+    """ Find first line with name in current buffer. Return line num. """
+    found, lnum = False, 0
+    matcher = re.compile('^[-+x*] {0}:'.format(name))
+    for line in vim.current.buffer:
+      if matcher.search(line) is not None:
+        found = True
+        break
+      lnum += 1
+
+    if not found:
+      lnum = -1
+    return lnum
+
+  def header(self):
+    curbuf = vim.current.buffer
+    curbuf[0] = self.event + ' plugins ({0}/{1})'.format(len(self.bar), self.num_plugs)
+
+    num_spaces = self.num_plugs - len(self.bar)
+    curbuf[1] = '[{0}{1}]'.format(self.bar, num_spaces * ' ')
+
+    with self.lock:
+      vim.command('normal! 2G')
+      vim.command('redraw')
+
+  def write(self, action, name, lines):
+    first, rest = lines[0], lines[1:]
+    msg = ['{0} {1}{2}{3}'.format(action, name, ': ' if first else '', first)]
+    msg.extend(['    ' + line for line in rest])
+
+    try:
+      if action == Action.ERROR:
+        self.bar += 'x'
+        vim.command("call add(s:update.errors, '{0}')".format(name))
+      elif action == Action.DONE:
+        self.bar += '='
+
+      curbuf = vim.current.buffer
+      lnum = self.__where(name)
+      if lnum != -1: # Found matching line num
+        del curbuf[lnum]
+        if lnum > self.maxy and action in set([Action.INSTALL, Action.UPDATE]):
+          lnum = 3
+      else:
+        lnum = 3
+      curbuf.append(msg, lnum)
+
+      self.header()
+    except vim.error:
+      pass
+
+class Command(object):
+  CD = 'cd /d' if G_IS_WIN else 'cd'
+
+  def __init__(self, cmd, cmd_dir=None, timeout=60, cb=None, clean=None):
+    self.cmd = cmd
+    if cmd_dir:
+      self.cmd = '{0} {1} && {2}'.format(Command.CD, cmd_dir, self.cmd)
+    self.timeout = timeout
+    self.callback = cb if cb else (lambda msg: None)
+    self.clean = clean if clean else (lambda: None)
+    self.proc = None
+
+  @property
+  def alive(self):
+    """ Returns true only if command still running. """
+    return self.proc and self.proc.poll() is None
+
+  def execute(self, ntries=3):
+    """ Execute the command with ntries if CmdTimedOut.
+        Returns the output of the command if no Exception.
+    """
+    attempt, finished, limit = 0, False, self.timeout
+
+    while not finished:
+      try:
+        attempt += 1
+        result = self.try_command()
+        finished = True
+        return result
+      except CmdTimedOut:
+        if attempt != ntries:
+          self.notify_retry()
+          self.timeout += limit
+        else:
+          raise
+
+  def notify_retry(self):
+    """ Retry required for command, notify user. """
+    for count in range(3, 0, -1):
+      if G_STOP.is_set():
+        raise KeyboardInterrupt
+      msg = 'Timeout. Will retry in {0} second{1} ...'.format(
+            count, 's' if count != 1 else '')
+      self.callback([msg])
+      time.sleep(1)
+    self.callback(['Retrying ...'])
+
+  def try_command(self):
+    """ Execute a cmd & poll for callback. Returns list of output.
+        Raises CmdFailed   -> return code for Popen isn't 0
+        Raises CmdTimedOut -> command exceeded timeout without new output
+    """
+    first_line = True
+
+    try:
+      tfile = tempfile.NamedTemporaryFile(mode='w+b')
+      preexec_fn = not G_IS_WIN and os.setsid or None
+      self.proc = subprocess.Popen(self.cmd, stdout=tfile,
+                                   stderr=subprocess.STDOUT,
+                                   stdin=subprocess.PIPE, shell=True,
+                                   preexec_fn=preexec_fn)
+      thrd = thr.Thread(target=(lambda proc: proc.wait()), args=(self.proc,))
+      thrd.start()
+
+      thread_not_started = True
+      while thread_not_started:
+        try:
+          thrd.join(0.1)
+          thread_not_started = False
+        except RuntimeError:
+          pass
+
+      while self.alive:
+        if G_STOP.is_set():
+          raise KeyboardInterrupt
+
+        if first_line or random.random() < G_LOG_PROB:
+          first_line = False
+          line = '' if G_IS_WIN else nonblock_read(tfile.name)
+          if line:
+            self.callback([line])
+
+        time_diff = time.time() - os.path.getmtime(tfile.name)
+        if time_diff > self.timeout:
+          raise CmdTimedOut(['Timeout!'])
+
+        thrd.join(0.5)
+
+      tfile.seek(0)
+      result = [line.decode('utf-8', 'replace').rstrip() for line in tfile]
+
+      if self.proc.returncode != 0:
+        raise CmdFailed([''] + result)
+
+      return result
+    except:
+      self.terminate()
+      raise
+
+  def terminate(self):
+    """ Terminate process and cleanup. """
+    if self.alive:
+      if G_IS_WIN:
+        os.kill(self.proc.pid, signal.SIGINT)
+      else:
+        os.killpg(self.proc.pid, signal.SIGTERM)
+    self.clean()
+
+class Plugin(object):
+  def __init__(self, name, args, buf_q, lock):
+    self.name = name
+    self.args = args
+    self.buf_q = buf_q
+    self.lock = lock
+    self.tag = args.get('tag', 0)
+
+  def manage(self):
+    try:
+      if os.path.exists(self.args['dir']):
+        self.update()
+      else:
+        self.install()
+        with self.lock:
+          thread_vim_command("let s:update.new['{0}'] = 1".format(self.name))
+    except PlugError as exc:
+      self.write(Action.ERROR, self.name, exc.msg)
+    except KeyboardInterrupt:
+      G_STOP.set()
+      self.write(Action.ERROR, self.name, ['Interrupted!'])
+    except:
+      # Any exception except those above print stack trace
+      msg = 'Trace:\n{0}'.format(traceback.format_exc().rstrip())
+      self.write(Action.ERROR, self.name, msg.split('\n'))
+      raise
+
+  def install(self):
+    target = self.args['dir']
+    if target[-1] == '\\':
+      target = target[0:-1]
+
+    def clean(target):
+      def _clean():
+        try:
+          shutil.rmtree(target)
+        except OSError:
+          pass
+      return _clean
+
+    self.write(Action.INSTALL, self.name, ['Installing ...'])
+    callback = functools.partial(self.write, Action.INSTALL, self.name)
+    cmd = 'git clone {0} {1} {2} {3} 2>&1'.format(
+          '' if self.tag else G_CLONE_OPT, G_PROGRESS, self.args['uri'],
+          esc(target))
+    com = Command(cmd, None, G_TIMEOUT, callback, clean(target))
+    result = com.execute(G_RETRIES)
+    self.write(Action.DONE, self.name, result[-1:])
+
+  def repo_uri(self):
+    cmd = 'git rev-parse --abbrev-ref HEAD 2>&1 && git config -f .git/config remote.origin.url'
+    command = Command(cmd, self.args['dir'], G_TIMEOUT,)
+    result = command.execute(G_RETRIES)
+    return result[-1]
+
+  def update(self):
+    match = re.compile(r'git::?@')
+    actual_uri = re.sub(match, '', self.repo_uri())
+    expect_uri = re.sub(match, '', self.args['uri'])
+    if actual_uri != expect_uri:
+      msg = ['',
+             'Invalid URI: {0}'.format(actual_uri),
+             'Expected     {0}'.format(expect_uri),
+             'PlugClean required.']
+      raise InvalidURI(msg)
+
+    if G_PULL:
+      self.write(Action.UPDATE, self.name, ['Updating ...'])
+      callback = functools.partial(self.write, Action.UPDATE, self.name)
+      fetch_opt = '--depth 99999999' if self.tag and os.path.isfile(os.path.join(self.args['dir'], '.git/shallow')) else ''
+      cmd = 'git fetch {0} {1} 2>&1'.format(fetch_opt, G_PROGRESS)
+      com = Command(cmd, self.args['dir'], G_TIMEOUT, callback)
+      result = com.execute(G_RETRIES)
+      self.write(Action.DONE, self.name, result[-1:])
+    else:
+      self.write(Action.DONE, self.name, ['Already installed'])
+
+  def write(self, action, name, msg):
+    self.buf_q.put((action, name, msg))
+
+class PlugThread(thr.Thread):
+  def __init__(self, tname, args):
+    super(PlugThread, self).__init__()
+    self.tname = tname
+    self.args = args
+
+  def run(self):
+    thr.current_thread().name = self.tname
+    buf_q, work_q, lock = self.args
+
+    try:
+      while not G_STOP.is_set():
+        name, args = work_q.get_nowait()
+        plug = Plugin(name, args, buf_q, lock)
+        plug.manage()
+        work_q.task_done()
+    except queue.Empty:
+      pass
+
+class RefreshThread(thr.Thread):
+  def __init__(self, lock):
+    super(RefreshThread, self).__init__()
+    self.lock = lock
+    self.running = True
+
+  def run(self):
+    while self.running:
+      with self.lock:
+        thread_vim_command('noautocmd normal! a')
+      time.sleep(0.33)
+
+  def stop(self):
+    self.running = False
+
+if G_NVIM:
+  def thread_vim_command(cmd):
+    vim.session.threadsafe_call(lambda: vim.command(cmd))
+else:
+  def thread_vim_command(cmd):
+    vim.command(cmd)
+
+def esc(name):
+  return '"' + name.replace('"', '\"') + '"'
+
+def nonblock_read(fname):
+  """ Read a file with nonblock flag. Return the last line. """
+  fread = os.open(fname, os.O_RDONLY | os.O_NONBLOCK)
+  buf = os.read(fread, 100000).decode('utf-8', 'replace')
+  os.close(fread)
+
+  line = buf.rstrip('\r\n')
+  left = max(line.rfind('\r'), line.rfind('\n'))
+  if left != -1:
+    left += 1
+    line = line[left:]
+
+  return line
+
+def main():
+  thr.current_thread().name = 'main'
+  nthreads = int(vim.eval('s:update.threads'))
+  plugs = vim.eval('s:update.todo')
+  mac_gui = vim.eval('s:mac_gui') == '1'
+
+  lock = thr.Lock()
+  buf = Buffer(lock, len(plugs), G_PULL)
+  buf_q, work_q = queue.Queue(), queue.Queue()
+  for work in plugs.items():
+    work_q.put(work)
+
+  start_cnt = thr.active_count()
+  for num in range(nthreads):
+    tname = 'PlugT-{0:02}'.format(num)
+    thread = PlugThread(tname, (buf_q, work_q, lock))
+    thread.start()
+  if mac_gui:
+    rthread = RefreshThread(lock)
+    rthread.start()
+
+  while not buf_q.empty() or thr.active_count() != start_cnt:
+    try:
+      action, name, msg = buf_q.get(True, 0.25)
+      buf.write(action, name, ['OK'] if not msg else msg)
+      buf_q.task_done()
+    except queue.Empty:
+      pass
+    except KeyboardInterrupt:
+      G_STOP.set()
+
+  if mac_gui:
+    rthread.stop()
+    rthread.join()
+
+main()
+EOF
+endfunction
+
+function! s:update_ruby()
+  ruby << EOF
+  module PlugStream
+    SEP = ["\r", "\n", nil]
+    def get_line
+      buffer = ''
+      loop do
+        char = readchar rescue return
+        if SEP.include? char.chr
+          buffer << $/
+          break
+        else
+          buffer << char
+        end
+      end
+      buffer
+    end
+  end unless defined?(PlugStream)
+
+  def esc arg
+    %["#{arg.gsub('"', '\"')}"]
+  end
+
+  def killall pid
+    pids = [pid]
+    if /mswin|mingw|bccwin/ =~ RUBY_PLATFORM
+      pids.each { |pid| Process.kill 'INT', pid.to_i rescue nil }
+    else
+      unless `which pgrep 2> /dev/null`.empty?
+        children = pids
+        until children.empty?
+          children = children.map { |pid|
+            `pgrep -P #{pid}`.lines.map { |l| l.chomp }
+          }.flatten
+          pids += children
+        end
+      end
+      pids.each { |pid| Process.kill 'TERM', pid.to_i rescue nil }
+    end
+  end
+
+  require 'thread'
+  require 'fileutils'
+  require 'timeout'
+  running = true
+  iswin = VIM::evaluate('s:is_win').to_i == 1
+  pull  = VIM::evaluate('s:update.pull').to_i == 1
+  base  = VIM::evaluate('g:plug_home')
+  all   = VIM::evaluate('s:update.todo')
+  limit = VIM::evaluate('get(g:, "plug_timeout", 60)')
+  tries = VIM::evaluate('get(g:, "plug_retries", 2)') + 1
+  nthr  = VIM::evaluate('s:update.threads').to_i
+  maxy  = VIM::evaluate('winheight(".")').to_i
+  cd    = iswin ? 'cd /d' : 'cd'
+  tot   = VIM::evaluate('len(s:update.todo)') || 0
+  bar   = ''
+  skip  = 'Already installed'
+  mtx   = Mutex.new
+  take1 = proc { mtx.synchronize { running && all.shift } }
+  logh  = proc {
+    cnt = bar.length
+    $curbuf[1] = "#{pull ? 'Updating' : 'Installing'} plugins (#{cnt}/#{tot})"
+    $curbuf[2] = '[' + bar.ljust(tot) + ']'
+    VIM::command('normal! 2G')
+    VIM::command('redraw')
+  }
+  where = proc { |name| (1..($curbuf.length)).find { |l| $curbuf[l] =~ /^[-+x*] #{name}:/ } }
+  log   = proc { |name, result, type|
+    mtx.synchronize do
+      ing  = ![true, false].include?(type)
+      bar += type ? '=' : 'x' unless ing
+      b = case type
+          when :install  then '+' when :update then '*'
+          when true, nil then '-' else
+            VIM::command("call add(s:update.errors, '#{name}')")
+            'x'
+          end
+      result =
+        if type || type.nil?
+          ["#{b} #{name}: #{result.lines.to_a.last || 'OK'}"]
+        elsif result =~ /^Interrupted|^Timeout/
+          ["#{b} #{name}: #{result}"]
+        else
+          ["#{b} #{name}"] + result.lines.map { |l| "    " << l }
+        end
+      if lnum = where.call(name)
+        $curbuf.delete lnum
+        lnum = 4 if ing && lnum > maxy
+      end
+      result.each_with_index do |line, offset|
+        $curbuf.append((lnum || 4) - 1 + offset, line.gsub(/\e\[./, '').chomp)
+      end
+      logh.call
+    end
+  }
+  bt = proc { |cmd, name, type, cleanup|
+    tried = timeout = 0
+    begin
+      tried += 1
+      timeout += limit
+      fd = nil
+      data = ''
+      if iswin
+        Timeout::timeout(timeout) do
+          tmp = VIM::evaluate('tempname()')
+          system("(#{cmd}) > #{tmp}")
+          data = File.read(tmp).chomp
+          File.unlink tmp rescue nil
+        end
+      else
+        fd = IO.popen(cmd).extend(PlugStream)
+        first_line = true
+        log_prob = 1.0 / nthr
+        while line = Timeout::timeout(timeout) { fd.get_line }
+          data << line
+          log.call name, line.chomp, type if name && (first_line || rand < log_prob)
+          first_line = false
+        end
+        fd.close
+      end
+      [$? == 0, data.chomp]
+    rescue Timeout::Error, Interrupt => e
+      if fd && !fd.closed?
+        killall fd.pid
+        fd.close
+      end
+      cleanup.call if cleanup
+      if e.is_a?(Timeout::Error) && tried < tries
+        3.downto(1) do |countdown|
+          s = countdown > 1 ? 's' : ''
+          log.call name, "Timeout. Will retry in #{countdown} second#{s} ...", type
+          sleep 1
+        end
+        log.call name, 'Retrying ...', type
+        retry
+      end
+      [false, e.is_a?(Interrupt) ? "Interrupted!" : "Timeout!"]
+    end
+  }
+  main = Thread.current
+  threads = []
+  watcher = Thread.new {
+    while VIM::evaluate('getchar(1)')
+      sleep 0.1
+    end
+    mtx.synchronize do
+      running = false
+      threads.each { |t| t.raise Interrupt }
+    end
+    threads.each { |t| t.join rescue nil }
+    main.kill
+  }
+  refresh = Thread.new {
+    while true
+      mtx.synchronize do
+        break unless running
+        VIM::command('noautocmd normal! a')
+      end
+      sleep 0.2
+    end
+  } if VIM::evaluate('s:mac_gui') == 1
+
+  clone_opt = VIM::evaluate('s:clone_opt')
+  progress = VIM::evaluate('s:progress_opt(1)')
+  nthr.times do
+    mtx.synchronize do
+      threads << Thread.new {
+        while pair = take1.call
+          name = pair.first
+          dir, uri, tag = pair.last.values_at *%w[dir uri tag]
+          exists = File.directory? dir
+          ok, result =
+            if exists
+              chdir = "#{cd} #{iswin ? dir : esc(dir)}"
+              ret, data = bt.call "#{chdir} && git rev-parse --abbrev-ref HEAD 2>&1 && git config -f .git/config remote.origin.url", nil, nil, nil
+              current_uri = data.lines.to_a.last
+              if !ret
+                if data =~ /^Interrupted|^Timeout/
+                  [false, data]
+                else
+                  [false, [data.chomp, "PlugClean required."].join($/)]
+                end
+              elsif current_uri.sub(/git::?@/, '') != uri.sub(/git::?@/, '')
+                [false, ["Invalid URI: #{current_uri}",
+                         "Expected:    #{uri}",
+                         "PlugClean required."].join($/)]
+              else
+                if pull
+                  log.call name, 'Updating ...', :update
+                  fetch_opt = (tag && File.exist?(File.join(dir, '.git/shallow'))) ? '--depth 99999999' : ''
+                  bt.call "#{chdir} && git fetch #{fetch_opt} #{progress} 2>&1", name, :update, nil
+                else
+                  [true, skip]
+                end
+              end
+            else
+              d = esc dir.sub(%r{[\\/]+$}, '')
+              log.call name, 'Installing ...', :install
+              bt.call "git clone #{clone_opt unless tag} #{progress} #{uri} #{d} 2>&1", name, :install, proc {
+                FileUtils.rm_rf dir
+              }
+            end
+          mtx.synchronize { VIM::command("let s:update.new['#{name}'] = 1") } if !exists && ok
+          log.call name, result, ok
+        end
+      } if running
+    end
+  end
+  threads.each { |t| t.join rescue nil }
+  logh.call
+  refresh.kill if refresh
+  watcher.kill
+EOF
+endfunction
+
+function! s:shellesc(arg)
+  return '"'.escape(a:arg, '"').'"'
+endfunction
+
+function! s:glob_dir(path)
+  return map(filter(s:glob(a:path, '**'), 'isdirectory(v:val)'), 's:dirpath(v:val)')
+endfunction
+
+function! s:progress_bar(line, bar, total)
+  call setline(a:line, '[' . s:lpad(a:bar, a:total) . ']')
+endfunction
+
+function! s:compare_git_uri(a, b)
+  let a = substitute(a:a, 'git:\{1,2}@', '', '')
+  let b = substitute(a:b, 'git:\{1,2}@', '', '')
+  return a ==# b
+endfunction
+
+function! s:format_message(bullet, name, message)
+  if a:bullet != 'x'
+    return [printf('%s %s: %s', a:bullet, a:name, s:lastline(a:message))]
+  else
+    let lines = map(s:lines(a:message), '"    ".v:val')
+    return extend([printf('x %s:', a:name)], lines)
+  endif
+endfunction
+
+function! s:with_cd(cmd, dir)
+  return printf('cd%s %s && %s', s:is_win ? ' /d' : '', s:shellesc(a:dir), a:cmd)
+endfunction
+
+function! s:system(cmd, ...)
+  try
+    let [sh, shrd] = s:chsh(1)
+    let cmd = a:0 > 0 ? s:with_cd(a:cmd, a:1) : a:cmd
+    return system(s:is_win ? '('.cmd.')' : cmd)
+  finally
+    let [&shell, &shellredir] = [sh, shrd]
+  endtry
+endfunction
+
+function! s:system_chomp(...)
+  let ret = call('s:system', a:000)
+  return v:shell_error ? '' : substitute(ret, '\n$', '', '')
+endfunction
+
+function! s:git_validate(spec, check_branch)
+  let err = ''
+  if isdirectory(a:spec.dir)
+    let result = s:lines(s:system('git rev-parse --abbrev-ref HEAD 2>&1 && git config -f .git/config remote.origin.url', a:spec.dir))
+    let remote = result[-1]
+    if v:shell_error
+      let err = join([remote, 'PlugClean required.'], "\n")
+    elseif !s:compare_git_uri(remote, a:spec.uri)
+      let err = join(['Invalid URI: '.remote,
+                    \ 'Expected:    '.a:spec.uri,
+                    \ 'PlugClean required.'], "\n")
+    elseif a:check_branch && has_key(a:spec, 'commit')
+      let result = s:lines(s:system('git rev-parse HEAD 2>&1', a:spec.dir))
+      let sha = result[-1]
+      if v:shell_error
+        let err = join(add(result, 'PlugClean required.'), "\n")
+      elseif !s:hash_match(sha, a:spec.commit)
+        let err = join([printf('Invalid HEAD (expected: %s, actual: %s)',
+                              \ a:spec.commit[:6], sha[:6]),
+                      \ 'PlugUpdate required.'], "\n")
+      endif
+    elseif a:check_branch
+      let branch = result[0]
+      " Check tag
+      if has_key(a:spec, 'tag')
+        let tag = s:system_chomp('git describe --exact-match --tags HEAD 2>&1', a:spec.dir)
+        if a:spec.tag !=# tag
+          let err = printf('Invalid tag: %s (expected: %s). Try PlugUpdate.',
+                \ (empty(tag) ? 'N/A' : tag), a:spec.tag)
+        endif
+      " Check branch
+      elseif a:spec.branch !=# branch
+        let err = printf('Invalid branch: %s (expected: %s). Try PlugUpdate.',
+              \ branch, a:spec.branch)
+      endif
+      if empty(err)
+        let commits = len(s:lines(s:system(printf('git rev-list origin/%s..HEAD', a:spec.branch), a:spec.dir)))
+        if !v:shell_error && commits
+          let err = join([printf('Diverged from origin/%s by %d commit(s).', a:spec.branch, commits),
+                        \ 'Reinstall after PlugClean.'], "\n")
+        endif
+      endif
+    endif
+  else
+    let err = 'Not found'
+  endif
+  return [err, err =~# 'PlugClean']
+endfunction
+
+function! s:rm_rf(dir)
+  if isdirectory(a:dir)
+    call s:system((s:is_win ? 'rmdir /S /Q ' : 'rm -rf ') . s:shellesc(a:dir))
+  endif
+endfunction
+
+function! s:clean(force)
+  call s:prepare()
+  call append(0, 'Searching for invalid plugins in '.g:plug_home)
+  call append(1, '')
+
+  " List of valid directories
+  let dirs = []
+  let errs = {}
+  let [cnt, total] = [0, len(g:plugs)]
+  for [name, spec] in items(g:plugs)
+    if !s:is_managed(name)
+      call add(dirs, spec.dir)
+    else
+      let [err, clean] = s:git_validate(spec, 1)
+      if clean
+        let errs[spec.dir] = s:lines(err)[0]
+      else
+        call add(dirs, spec.dir)
+      endif
+    endif
+    let cnt += 1
+    call s:progress_bar(2, repeat('=', cnt), total)
+    normal! 2G
+    redraw
+  endfor
+
+  let allowed = {}
+  for dir in dirs
+    let allowed[s:dirpath(fnamemodify(dir, ':h:h'))] = 1
+    let allowed[dir] = 1
+    for child in s:glob_dir(dir)
+      let allowed[child] = 1
+    endfor
+  endfor
+
+  let todo = []
+  let found = sort(s:glob_dir(g:plug_home))
+  while !empty(found)
+    let f = remove(found, 0)
+    if !has_key(allowed, f) && isdirectory(f)
+      call add(todo, f)
+      call append(line('$'), '- ' . f)
+      if has_key(errs, f)
+        call append(line('$'), '    ' . errs[f])
+      endif
+      let found = filter(found, 'stridx(v:val, f) != 0')
+    end
+  endwhile
+
+  4
+  redraw
+  if empty(todo)
+    call append(line('$'), 'Already clean.')
+  else
+    if a:force || s:ask('Proceed?')
+      for dir in todo
+        call s:rm_rf(dir)
+      endfor
+      call append(3, ['Removed.', ''])
+    else
+      call append(3, ['Cancelled.', ''])
+    endif
+  endif
+  4
+endfunction
+
+function! s:upgrade()
+  echo 'Downloading the latest version of vim-plug'
+  redraw
+  let tmp = tempname()
+  let new = tmp . '/plug.vim'
+
+  try
+    let out = s:system(printf('git clone --depth 1 %s %s', s:plug_src, tmp))
+    if v:shell_error
+      return s:err('Error upgrading vim-plug: '. out)
+    endif
+
+    if readfile(s:me) ==# readfile(new)
+      echo 'vim-plug is already up-to-date'
+      return 0
+    else
+      call rename(s:me, s:me . '.old')
+      call rename(new, s:me)
+      unlet g:loaded_plug
+      echo 'vim-plug has been upgraded'
+      return 1
+    endif
+  finally
+    silent! call s:rm_rf(tmp)
+  endtry
+endfunction
+
+function! s:upgrade_specs()
+  for spec in values(g:plugs)
+    let spec.frozen = get(spec, 'frozen', 0)
+  endfor
+endfunction
+
+function! s:status()
+  call s:prepare()
+  call append(0, 'Checking plugins')
+  call append(1, '')
+
+  let ecnt = 0
+  let unloaded = 0
+  let [cnt, total] = [0, len(g:plugs)]
+  for [name, spec] in items(g:plugs)
+    if has_key(spec, 'uri')
+      if isdirectory(spec.dir)
+        let [err, _] = s:git_validate(spec, 1)
+        let [valid, msg] = [empty(err), empty(err) ? 'OK' : err]
+      else
+        let [valid, msg] = [0, 'Not found. Try PlugInstall.']
+      endif
+    else
+      if isdirectory(spec.dir)
+        let [valid, msg] = [1, 'OK']
+      else
+        let [valid, msg] = [0, 'Not found.']
+      endif
+    endif
+    let cnt += 1
+    let ecnt += !valid
+    " `s:loaded` entry can be missing if PlugUpgraded
+    if valid && get(s:loaded, name, -1) == 0
+      let unloaded = 1
+      let msg .= ' (not loaded)'
+    endif
+    call s:progress_bar(2, repeat('=', cnt), total)
+    call append(3, s:format_message(valid ? '-' : 'x', name, msg))
+    normal! 2G
+    redraw
+  endfor
+  call setline(1, 'Finished. '.ecnt.' error(s).')
+  normal! gg
+  setlocal nomodifiable
+  if unloaded
+    echo "Press 'L' on each line to load plugin, or 'U' to update"
+    nnoremap <silent> <buffer> L :call <SID>status_load(line('.'))<cr>
+    xnoremap <silent> <buffer> L :call <SID>status_load(line('.'))<cr>
+  end
+endfunction
+
+function! s:extract_name(str, prefix, suffix)
+  return matchstr(a:str, '^'.a:prefix.' \zs[^:]\+\ze:.*'.a:suffix.'$')
+endfunction
+
+function! s:status_load(lnum)
+  let line = getline(a:lnum)
+  let name = s:extract_name(line, '-', '(not loaded)')
+  if !empty(name)
+    call plug#load(name)
+    setlocal modifiable
+    call setline(a:lnum, substitute(line, ' (not loaded)$', '', ''))
+    setlocal nomodifiable
+  endif
+endfunction
+
+function! s:status_update() range
+  let lines = getline(a:firstline, a:lastline)
+  let names = filter(map(lines, 's:extract_name(v:val, "[x-]", "")'), '!empty(v:val)')
+  if !empty(names)
+    echo
+    execute 'PlugUpdate' join(names)
+  endif
+endfunction
+
+function! s:is_preview_window_open()
+  silent! wincmd P
+  if &previewwindow
+    wincmd p
+    return 1
+  endif
+endfunction
+
+function! s:find_name(lnum)
+  for lnum in reverse(range(1, a:lnum))
+    let line = getline(lnum)
+    if empty(line)
+      return ''
+    endif
+    let name = s:extract_name(line, '-', '')
+    if !empty(name)
+      return name
+    endif
+  endfor
+  return ''
+endfunction
+
+function! s:preview_commit()
+  if b:plug_preview < 0
+    let b:plug_preview = !s:is_preview_window_open()
+  endif
+
+  let sha = matchstr(getline('.'), '^  \X*\zs[0-9a-f]\{7}')
+  if empty(sha)
+    return
+  endif
+
+  let name = s:find_name(line('.'))
+  if empty(name) || !has_key(g:plugs, name) || !isdirectory(g:plugs[name].dir)
+    return
+  endif
+
+  execute 'pedit' sha
+  wincmd P
+  setlocal filetype=git buftype=nofile nobuflisted modifiable
+  execute 'silent read !cd' s:shellesc(g:plugs[name].dir) '&& git show --no-color --pretty=medium' sha
+  normal! gg"_dd
+  setlocal nomodifiable
+  nnoremap <silent> <buffer> q :q<cr>
+  wincmd p
+endfunction
+
+function! s:section(flags)
+  call search('\(^[x-] \)\@<=[^:]\+:', a:flags)
+endfunction
+
+function! s:format_git_log(line)
+  let indent = '  '
+  let tokens = split(a:line, nr2char(1))
+  if len(tokens) != 5
+    return indent.substitute(a:line, '\s*$', '', '')
+  endif
+  let [graph, sha, refs, subject, date] = tokens
+  let tag = matchstr(refs, 'tag: [^,)]\+')
+  let tag = empty(tag) ? ' ' : ' ('.tag.') '
+  return printf('%s%s%s%s%s (%s)', indent, graph, sha, tag, subject, date)
+endfunction
+
+function! s:append_ul(lnum, text)
+  call append(a:lnum, ['', a:text, repeat('-', len(a:text))])
+endfunction
+
+function! s:diff()
+  call s:prepare()
+  call append(0, ['Collecting changes ...', ''])
+  let cnts = [0, 0]
+  let bar = ''
+  let total = filter(copy(g:plugs), 's:is_managed(v:key) && isdirectory(v:val.dir)')
+  call s:progress_bar(2, bar, len(total))
+  for origin in [1, 0]
+    let plugs = reverse(sort(items(filter(copy(total), (origin ? '' : '!').'(has_key(v:val, "commit") || has_key(v:val, "tag"))'))))
+    if empty(plugs)
+      continue
+    endif
+    call s:append_ul(2, origin ? 'Pending updates:' : 'Last update:')
+    for [k, v] in plugs
+      let range = origin ? '..origin/'.v.branch : 'HEAD@{1}..'
+      let diff = s:system_chomp('git log --graph --color=never --pretty=format:"%x01%h%x01%d%x01%s%x01%cr" '.s:shellesc(range), v.dir)
+      if !empty(diff)
+        let ref = has_key(v, 'tag') ? (' (tag: '.v.tag.')') : has_key(v, 'commit') ? (' '.v.commit) : ''
+        call append(5, extend(['', '- '.k.':'.ref], map(s:lines(diff), 's:format_git_log(v:val)')))
+        let cnts[origin] += 1
+      endif
+      let bar .= '='
+      call s:progress_bar(2, bar, len(total))
+      normal! 2G
+      redraw
+    endfor
+    if !cnts[origin]
+      call append(5, ['', 'N/A'])
+    endif
+  endfor
+  call setline(1, printf('%d plugin(s) updated.', cnts[0])
+        \ . (cnts[1] ? printf(' %d plugin(s) have pending updates.', cnts[1]) : ''))
+
+  if cnts[0] || cnts[1]
+    nnoremap <silent> <buffer> <cr> :silent! call <SID>preview_commit()<cr>
+    nnoremap <silent> <buffer> o    :silent! call <SID>preview_commit()<cr>
+  endif
+  if cnts[0]
+    nnoremap <silent> <buffer> X :call <SID>revert()<cr>
+    echo "Press 'X' on each block to revert the update"
+  endif
+  normal! gg
+  setlocal nomodifiable
+endfunction
+
+function! s:revert()
+  if search('^Pending updates', 'bnW')
+    return
+  endif
+
+  let name = s:find_name(line('.'))
+  if empty(name) || !has_key(g:plugs, name) ||
+    \ input(printf('Revert the update of %s? (y/N) ', name)) !~? '^y'
+    return
+  endif
+
+  call s:system('git reset --hard HEAD@{1} && git checkout '.s:esc(g:plugs[name].branch), g:plugs[name].dir)
+  setlocal modifiable
+  normal! "_dap
+  setlocal nomodifiable
+  echo 'Reverted.'
+endfunction
+
+function! s:snapshot(force, ...) abort
+  call s:prepare()
+  setf vim
+  call append(0, ['" Generated by vim-plug',
+                \ '" '.strftime("%c"),
+                \ '" :source this file in vim to restore the snapshot',
+                \ '" or execute: vim -S snapshot.vim',
+                \ '', '', 'PlugUpdate!'])
+  1
+  let anchor = line('$') - 3
+  let names = sort(keys(filter(copy(g:plugs),
+        \'has_key(v:val, "uri") && !has_key(v:val, "commit") && isdirectory(v:val.dir)')))
+  for name in reverse(names)
+    let sha = s:system_chomp('git rev-parse --short HEAD', g:plugs[name].dir)
+    if !empty(sha)
+      call append(anchor, printf("silent! let g:plugs['%s'].commit = '%s'", name, sha))
+      redraw
+    endif
+  endfor
+
+  if a:0 > 0
+    let fn = expand(a:1)
+    if filereadable(fn) && !(a:force || s:ask(a:1.' already exists. Overwrite?'))
+      return
+    endif
+    call writefile(getline(1, '$'), fn)
+    echo 'Saved as '.a:1
+    silent execute 'e' s:esc(fn)
+    setf vim
+  endif
+endfunction
+
+function! s:split_rtp()
+  return split(&rtp, '\\\@<!,')
+endfunction
+
+let s:first_rtp = s:escrtp(get(s:split_rtp(), 0, ''))
+let s:last_rtp  = s:escrtp(get(s:split_rtp(), -1, ''))
+
+if exists('g:plugs')
+  let g:plugs_order = get(g:, 'plugs_order', keys(g:plugs))
+  call s:upgrade_specs()
+  call s:define_commands()
+endif
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
diff --git a/vim/.vim/config/airline.vim b/vim/.vim/config/airline.vim
new file mode 100644
index 0000000..99fc4f0
--- /dev/null
+++ b/vim/.vim/config/airline.vim
@@ -0,0 +1,4 @@
+set laststatus=2
+let g:airline#extensions#tabline#enabled = 1
+let g:airline_powerline_fonts = 1
+let g:airline_theme = "molokai"
diff --git a/vim/.vim/config/molokai.vim b/vim/.vim/config/molokai.vim
new file mode 100644
index 0000000..848845c
--- /dev/null
+++ b/vim/.vim/config/molokai.vim
@@ -0,0 +1 @@
+let g:rehash256 = 1
\ No newline at end of file
diff --git a/vim/.vim/config/rainbow.vim b/vim/.vim/config/rainbow.vim
new file mode 100644
index 0000000..7870030
--- /dev/null
+++ b/vim/.vim/config/rainbow.vim
@@ -0,0 +1,19 @@
+let g:rbpt_colorpairs = [
+        \ [158, '#00ceb3'],
+        \ [081, '#00a3ff'],
+        \ [214, '#ff8d00'],
+        \ [123, '#3fffc9'],
+        \ [045, '#29b9ec'],
+        \ [190, '#bfec29'],
+        \ [208, '#ffad00'],
+        \ [117, '#48bde0'],
+        \ ]
+
+let g:rbpt_max = 8
+let g:rbpt_loadcmd_toggle = 0
+
+au VimEnter * RainbowParenthesesToggle
+au Syntax * RainbowParenthesesLoadRound
+au Syntax * RainbowParenthesesLoadSquare
+au Syntax * RainbowParenthesesLoadBraces
+
diff --git a/vim/.vim/config/syntastic.vim b/vim/.vim/config/syntastic.vim
new file mode 100644
index 0000000..04babc7
--- /dev/null
+++ b/vim/.vim/config/syntastic.vim
@@ -0,0 +1,35 @@
+if has('nvim')
+    autocmd BufReadPost * Neomake
+        autocmd BufWritePost * Neomake
+        map <leader>sc :Neomake!<CR>
+        let g:neomake_python_enabled_makers = ['flake8']
+
+else
+        set statusline+=%#warningmsg#
+    set statusline+=%{SyntasticStatuslineFlag()}
+    set statusline+=%*
+
+    let g:syntastic_always_populate_loc_list = 1
+    let g:syntastic_auto_loc_list = 1
+
+    let g:syntastic_quiet_messages = {'level': 'warnings'}
+        let g:syntastic_check_on_open=1
+    let g:syntastic_check_on_wq = 1
+        let g:syntastic_enable_signs=1
+
+        let g:syntastic_error_symbol='✗'
+        let g:syntastic_warning_symbol='⚠'
+
+        let g:syntastic_html_tidy_exec = 'tidy'
+
+        let g:syntastic_python_python_exec = '/usr/bin/python3'
+    let g:syntastic_mode_map = { 'mode': 'passive',
+                                                           \ 'active_filetypes': ['python', 'javascript'],
+                                                           \ 'passive_filetypes': ['scala', 'tex', 'java', 'go'] }
+
+        let g:syntastic_python_checkers = ['pep8']
+        let g:syntastic_python_flake8_post_args = "--ignore=E501,E226,E225,E227"
+        let g:syntastic_c_compiler = 'clang'
+
+        map <leader>sc :SyntasticCheck<CR>
+endif
diff --git a/vim/.vim/config/ycm.vim b/vim/.vim/config/ycm.vim
new file mode 100644
index 0000000..ec11cbd
--- /dev/null
+++ b/vim/.vim/config/ycm.vim
@@ -0,0 +1,20 @@
+let g:ycm_global_ycm_extra_conf = '/home/clarkzjw/.vim/config/ycm_extra_conf.py'
+let g:ycm_collect_identifiers_from_tags_files = 1
+let g:ycm_seed_identifiers_with_syntax = 1
+let g:ycm_confirm_extra_conf = 0
+let g:ycm_min_num_of_chars_for_completion = 2
+let g:ycm_auto_trigger = 1
+let g:ycm_path_to_python_interpreter = '/usr/bin/python3'
+let g:ycm_show_diagnostics_ui = 0
+let g:ycm_key_list_select_completion = ['<TAB>', '<C-n>', '<Down>']
+let g:ycm_key_list_previous_completion = ['<C-p>', '<Up>']
+"let g:ycm_filetype_whitelist = {
+"    \ 'c': 1 ,
+"    \ 'cpp': 1,
+"    \ 'python': 1
+"    \}
+nnoremap <leader>jd :YcmCompleter GoTo<CR>
+
+let g:ycm_add_preview_to_completeopt = 0
+let g:ycm_autoclose_preview_window_after_completion = 1
+let g:ycm_autoclose_preview_window_after_insertion = 0
diff --git a/vim/.vim/config/ycm_extra_conf.py b/vim/.vim/config/ycm_extra_conf.py
new file mode 100644
index 0000000..3a827dd
--- /dev/null
+++ b/vim/.vim/config/ycm_extra_conf.py
@@ -0,0 +1,76 @@
+import os
+import ycm_core
+from clang_helpers import PrepareClangFlags
+
+compilation_database_folder = ''
+
+if compilation_database_folder:
+    database = ycm_core.CompilationDatabase(compilation_database_folder)
+else:
+    database = None
+
+flags = [
+    '-Wall',
+    '-std=c++11',
+    '-stdlib=libc++',
+    '-x',
+    'c++',
+    '-I/usr/local/include',
+    '-I/usr/include',
+    '-I/home/clarkzjw/Code/clang3.9.0/include/c++/v1',
+    '.',
+]
+
+
+def DirectoryOfThisScript():
+    return os.path.dirname(os.path.abspath(__file__))
+
+
+def MakeRelativePathsInFlagsAbsolute(flags, working_directory):
+    if not working_directory:
+        return flags
+    new_flags = []
+    make_next_absolute = False
+    path_flags = ['-isystem', '-I', '-iquote', '--sysroot=']
+    for flag in flags:
+        new_flag = flag
+
+        if make_next_absolute:
+            make_next_absolute = False
+            if not flag.startswith('/'):
+                new_flag = os.path.join(working_directory, flag)
+
+        for path_flag in path_flags:
+            if flag == path_flag:
+                make_next_absolute = True
+                break
+
+            if flag.startswith(path_flag):
+                path = flag[len(path_flag):]
+                new_flag = path_flag + os.path.join(working_directory, path)
+                break
+
+        if new_flag:
+            new_flags.append(new_flag)
+    return new_flags
+
+
+def FlagsForFile(filename):
+    if database:
+        # Bear in mind that compilation_info.compiler_flags_ does NOT return a
+        # python list, but a "list-like" StringVec object
+        compilation_info = database.GetCompilationInfoForFile(filename)
+        final_flags = PrepareClangFlags(
+            MakeRelativePathsInFlagsAbsolute(
+                compilation_info.compiler_flags_,
+                compilation_info.compiler_working_dir_),
+            filename)
+
+    else:
+        relative_to = DirectoryOfThisScript()
+        final_flags = MakeRelativePathsInFlagsAbsolute(flags, relative_to)
+
+    return {
+        'flags': final_flags,
+        'do_cache': True
+    }
diff --git a/vim/.vim/plugged/.gitkeep b/vim/.vim/plugged/.gitkeep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/vim/.vim/plugged/.gitkeep
diff --git a/vim/.vimrc b/vim/.vimrc
new file mode 100644
index 0000000..a55de80
--- /dev/null
+++ b/vim/.vimrc
@@ -0,0 +1,69 @@
+" Vim Configuration
+" Author: clarkzjw
+" 2016.11.14
+
+"""""""""""""""""""""""""""""""""
+" Vim-Plug基础插件
+call plug#begin('~/.vim/plugged')
+
+" Complete
+Plug 'Valloric/YouCompleteMe'
+
+" Syntax
+Plug 'scrooloose/syntastic'
+
+" Theme
+Plug 'bling/vim-airline'
+Plug 'vim-airline/vim-airline-themes'
+Plug 'tomasr/molokai'
+
+" Python
+Plug 'hdima/python-syntax'
+Plug 'hynek/vim-python-pep8-indent'
+
+" Misc
+Plug 'jiangmiao/auto-pairs'
+Plug 'Yggdroot/indentLine'
+Plug 'kien/rainbow_parentheses.vim'
+Plug 'bronson/vim-trailing-whitespace'
+
+call plug#end()
+"""""""""""""""""""""""""""""""""
+
+"""""""""""""""""""""""""""""""""
+" 设置缩进宽度为 4 个空格
+set shiftwidth=4
+set tabstop=4
+set softtabstop=4
+set expandtab
+
+" 打开时光标放在上次退出时的位置
+if has("autocmd")
+    autocmd BufReadPost *
+        \ if line("'\"") > 0 && line ("'\"") <= line("$") |
+            \   exe "normal g'\"" |
+        \ endif
+endif
+
+set so=10           " 光标移动到倒数第10行时开始滚屏
+set number          " 显示行号
+syntax on           " 打开语法高亮
+filetype on         " 打开文件类型支持
+filetype plugin on  " 打开文件类型插件支持
+filetype indent on  " 打开文件类型缩进支持
+let mapleader = ","
+
+
+" 模糊键
+:command W w
+:command WQ wq
+:command Wq wq
+:command Q q
+"""""""""""""""""""""""""""""""""
+
+" 插件配置文件
+source ~/.vim/config/airline.vim
+source ~/.vim/config/molokai.vim
+source ~/.vim/config/ycm.vim
+source ~/.vim/config/rainbow.vim
+source ~/.vim/config/syntastic.vim