Fix Travis CI build

Close #236

.travis.yml

@@ -4,19 +4,22 @@ rvm:
   - 1.9.2 # Test with vim-nox package on ubuntu
   - 1.9.3 # Test against python installer
   - 2.0.0
+  - 2.1.0 # Test against python3 installer
 
 before_script: |
+  sudo apt-get update -y
   if [ $(ruby -e 'puts RUBY_VERSION') = 1.9.2 ]; then
-    sudo apt-get update -y
     sudo apt-get install -y vim-nox
     sudo ln -s /usr/bin/vim /usr/local/bin/vim
   else
-    hg clone https://code.google.com/p/vim/
+    git clone --depth 1 https://github.com/vim/vim
     cd vim
     if [ $(ruby -e 'puts RUBY_VERSION') = 1.9.3 ]; then
-      sudo apt-get update -y
       sudo apt-get install -y python2.7-dev
       ./configure --with-features=huge --enable-pythoninterp
+    elif [ $(ruby -e 'puts RUBY_VERSION') = 2.1.0 ]; then
+      sudo apt-get install -y python3-dev
+      ./configure --with-features=huge --enable-python3interp
     else
       ./configure --with-features=huge --enable-rubyinterp
     fi

README.md

@@ -1,5 +1,5 @@
-<img src="https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.png" height="56" alt="vim-plug">
-[![travis-ci](https://travis-ci.org/junegunn/vim-plug.svg?branch=master)](https://travis-ci.org/junegunn/vim-plug)
+<img src="https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.png" height="75" alt="vim-plug">[![travis-ci](https://travis-ci.org/junegunn/vim-plug.svg?branch=master)](https://travis-ci.org/junegunn/vim-plug)
+===
 
 A minimalist Vim plugin manager.
 
@@ -10,7 +10,8 @@ A minimalist Vim plugin manager.
 - Easier to setup: Single file. No boilerplate code required.
 - Easier to use: Concise, intuitive syntax
 - [Super-fast][40/4] parallel installation/update
-  (with [+python][py] or [+ruby][rb] or [Neovim][nv])
+  (with any of `+python`, `+python3`, `+ruby`, or [Neovim][nv])
+- Creates shallow clones to minimize disk space usage and download time
 - On-demand loading for [faster startup time][startup-time]
 - Can review and rollback updates
 - Branch/tag support
@@ -18,8 +19,6 @@ A minimalist Vim plugin manager.
 - Support for externally managed plugins
 
 [40/4]: https://raw.githubusercontent.com/junegunn/i/master/vim-plug/40-in-4.gif
-[py]: https://github.com/junegunn/vim-plug/wiki/python
-[rb]: https://github.com/junegunn/vim-plug/wiki/ruby
 [nv]: http://neovim.org/
 [startup-time]: http://junegunn.kr/images/vim-startup-time.png
 
@@ -42,6 +41,9 @@ call plug#begin('~/.vim/plugged')
 Plug 'junegunn/seoul256.vim'
 Plug 'junegunn/vim-easy-align'
 
+" 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' }
@@ -50,7 +52,7 @@ Plug 'tpope/vim-fireplace', { 'for': 'clojure' }
 Plug 'https://github.com/junegunn/vim-github-dashboard.git'
 
 " Plugin options
-Plug 'nsf/gocode', { 'tag': 'go.weekly.2012-03-13', 'rtp': 'vim' }
+Plug 'nsf/gocode', { 'tag': 'v.20150303', 'rtp': 'vim' }
 
 " Plugin outside ~/.vim/plugged with post-update hook
 Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': 'yes \| ./install' }
@@ -89,13 +91,14 @@ Reload .vimrc and `:PlugInstall` to install plugins.
 
 ### Global options
 
-| Flag                | Default                           | Description                                                |
-| ------------------- | --------------------------------- | -----------------------------------------------------------|
-| `g:plug_threads`    | 16                                | Default number of threads to use                           |
+| Flag                | Default                           | Description                                            |
+| ------------------- | --------------------------------- | ------------------------------------------------------ |
+| `g:plug_threads`    | 16                                | Default number of threads to use                       |
 | `g:plug_timeout`    | 60                                | Time limit of each task in seconds (*Ruby & Python*)   |
 | `g:plug_retries`    | 2                                 | Number of retries in case of timeout (*Ruby & Python*) |
-| `g:plug_window`     | `vertical topleft new`            | Command to open plug window                                |
-| `g:plug_url_format` | `https://git::@github.com/%s.git` | `printf` format to build repo URL                          |
+| `g:plug_shallow`    | 1                                 | Use shallow clone                                      |
+| `g:plug_window`     | `vertical topleft new`            | Command to open plug window                            |
+| `g:plug_url_format` | `https://git::@github.com/%s.git` | `printf` format to build repo URL                      |
 
 ### Keybindings
 
@@ -134,6 +137,10 @@ Plug 'kovisoft/paredit', { 'for': ['clojure', 'scheme'] }
 
 " On-demand loading on both conditions
 Plug 'junegunn/vader.vim',  { 'on': 'Vader', 'for': 'vader' }
+
+" Code to execute when the plugin is loaded on demand
+Plug 'Valloric/YouCompleteMe', { 'for': 'cpp' }
+autocmd! User YouCompleteMe call youcompleteme#Enable()
 ```
 
 `for` option is generally not needed as most plugins for specific file types

plug.vim

@@ -3,8 +3,7 @@
 "
 " Download plug.vim and put it in ~/.vim/autoload
 "
-"   mkdir -p ~/.vim/autoload
-"   curl -fLo ~/.vim/autoload/plug.vim \
+"   curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
 "     https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
 "
 " Edit your .vimrc
@@ -15,6 +14,9 @@
 "   Plug 'junegunn/seoul256.vim'
 "   Plug 'junegunn/vim-easy-align'
 "
+"   " 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' }
@@ -23,7 +25,7 @@
 "   Plug 'https://github.com/junegunn/vim-github-dashboard.git'
 "
 "   " Plugin options
-"   Plug 'nsf/gocode', { 'tag': 'go.weekly.2012-03-13', 'rtp': 'vim' }
+"   Plug 'nsf/gocode', { 'tag': 'v.20150303', 'rtp': 'vim' }
 "
 "   " Plugin outside ~/.vim/plugged with post-update hook
 "   Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': 'yes \| ./install' }
@@ -37,7 +39,7 @@
 " Visit https://github.com/junegunn/vim-plug for more information.
 "
 "
-" Copyright (c) 2014 Junegunn Choi
+" Copyright (c) 2015 Junegunn Choi
 "
 " MIT License
 "
@@ -68,14 +70,12 @@ let g:loaded_plug = 1
 let s:cpo_save = &cpo
 set cpo&vim
 
-let s:plug_src = 'https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.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:py2 = has('python') && !s:is_win
-let s:ruby = has('ruby') && (v:version >= 703 || v:version == 702 && has('patch374'))
-let s:nvim = has('nvim') && !s:is_win
+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 = {
@@ -166,7 +166,7 @@ function! plug#end()
     if has_key(plug, 'on')
       let s:triggers[name] = { 'map': [], 'cmd': [] }
       for cmd in s:to_a(plug.on)
-        if cmd =~ '^<Plug>.\+'
+        if cmd =~? '^<Plug>.\+'
           if empty(mapcheck(cmd)) && empty(mapcheck(cmd, 'i'))
             call s:assoc(lod.map, cmd, name)
           endif
@@ -271,7 +271,7 @@ if s:is_win
   endfunction
 
   function! s:is_local_plug(repo)
-    return a:repo =~? '^[a-z]:'
+    return a:repo =~? '^[a-z]:\|^[%~]'
   endfunction
 else
   function! s:rtp(spec)
@@ -359,7 +359,9 @@ function! plug#load(...)
   for name in a:000
     call s:lod([name], ['ftdetect', 'after/ftdetect', 'plugin', 'after/plugin'])
   endfor
-  doautocmd BufRead
+  if exists('#BufRead')
+    doautocmd BufRead
+  endif
   return 1
 endfunction
 
@@ -389,14 +391,21 @@ function! s:lod(names, types)
     for dir in a:types
       call s:source(rtp, dir.'/**/*.vim')
     endfor
+    if exists('#User#'.name)
+      execute 'doautocmd User' name
+    endif
   endfor
 endfunction
 
 function! s:lod_ft(pat, names)
   call s:lod(a:names, ['plugin', 'after/plugin'])
   execute 'autocmd! PlugLOD FileType' a:pat
-  doautocmd filetypeplugin FileType
-  doautocmd filetypeindent FileType
+  if exists('#filetypeplugin#FileType')
+    doautocmd filetypeplugin FileType
+  endif
+  if exists('#filetypeindent#FileType')
+    doautocmd filetypeindent FileType
+  endif
 endfunction
 
 function! s:lod_cmd(cmd, bang, l1, l2, args, names)
@@ -427,9 +436,11 @@ function! s:add(repo, ...)
     let name = fnamemodify(repo, ':t:s?\.git$??')
     let spec = extend(s:infer_properties(name, repo),
                     \ a:0 == 1 ? s:parse_options(a:1) : s:base_spec)
+    if !has_key(g:plugs, name)
+      call add(g:plugs_order, name)
+    endif
     let g:plugs[name] = spec
-    let g:plugs_order += [name]
-    let s:loaded[name] = 0
+    let s:loaded[name] = get(s:loaded, name, 0)
   catch
     return s:err(v:exception)
   endtry
@@ -708,7 +719,7 @@ endfunction
 function! s:update_impl(pull, force, args) abort
   let args = copy(a:args)
   let threads = (len(args) > 0 && args[-1] =~ '^[1-9][0-9]*$') ?
-                  \ remove(args, -1) : get(g:, 'plug_threads', 16)
+                  \ remove(args, -1) : get(g:, 'plug_threads', s:is_win ? 1 : 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)') :
@@ -739,6 +750,16 @@ function! s:update_impl(pull, force, args) abort
     endtry
   endif
 
+  if has('nvim') && !exists('*jobwait') && threads > 1
+    echohl WarningMsg
+    echomsg 'vim-plug: update Neovim for parallel installer'
+    echohl None
+  endif
+
+  let python = (has('python') || has('python3')) && !s:is_win && !has('win32unix')
+      \ && (!s:nvim || has('vim_starting'))
+  let ruby = has('ruby') && !s:nvim && (v:version >= 703 || v:version == 702 && has('patch374'))
+
   let s:update = {
     \ 'start':   reltime(),
     \ 'all':     todo,
@@ -747,7 +768,7 @@ function! s:update_impl(pull, force, args) abort
     \ 'pull':    a:pull,
     \ 'force':   a:force,
     \ 'new':     {},
-    \ 'threads': (s:py2 || s:ruby || s:nvim) ? min([len(todo), threads]) : 1,
+    \ 'threads': (python || ruby || s:nvim) ? min([len(todo), threads]) : 1,
     \ 'bar':     '',
     \ 'fin':     0
   \ }
@@ -755,22 +776,27 @@ function! s:update_impl(pull, force, args) abort
   call s:prepare()
   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 s:py2 && !s:ruby && !s:nvim && s:update.threads > 1
+  if python && !has('python3') && !ruby && !s:nvim && s:update.threads > 1
     redir => pyv
     silent python import platform; print(platform.python_version())
     redir END
-    let s:py2 = s:version_requirement(
-          \ map(split(split(pyv)[0], '\.'), 'str2nr(v:val)'), [2, 7])
+    let python = s:version_requirement(
+          \ map(split(split(pyv)[0], '\.'), 'str2nr(v:val)'), [2, 6])
   endif
-  if (s:py2 || s:ruby) && !s:nvim && s:update.threads > 1
+
+  if (python || ruby) && s:update.threads > 1
     try
       let imd = &imd
       if s:mac_gui
         set noimd
       endif
-      if s:ruby
+      if ruby
         call s:update_ruby()
       else
         call s:update_python()
@@ -816,9 +842,7 @@ function! s:job_abort()
   if !s:nvim || !exists('s:jobs')
     return
   endif
-  augroup PlugJobControl
-    autocmd!
-  augroup END
+
   for [name, j] in items(s:jobs)
     silent! call jobstop(j.jobid)
     if j.new
@@ -828,52 +852,48 @@ function! s:job_abort()
   let s:jobs = {}
 endfunction
 
-function! s:job_handler(name) abort
+" 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 !has_key(s:jobs, a:name)
-    return
-  endif
-  let job = s:jobs[a:name]
-
-  if v:job_data[1] == 'exit'
-    let job.running = 0
-    if s:lastline(job.result) ==# 'Error'
-      let job.error = 1
-      let job.result = substitute(job.result, "Error[\r\n]$", '', '')
-    endif
-    call s:reap(a:name)
-    call s:tick()
-  else
-    let job.result .= s:to_s(v:job_data[2])
+  if a:event == 'stdout'
+    let self.result .= substitute(s:to_s(a:data), '[\r\n]', '', 'g') . "\n"
     " To reduce the number of buffer updates
-    let job.tick = get(job, 'tick', -1) + 1
-    if job.tick % len(s:jobs) == 0
-      call s:log(job.new ? '+' : '*', a:name, job.result)
+    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 = { 'running': 1, 'new': get(a:opts, 'new', 0),
-            \ 'error': 0, 'result': '' }
+  let job = { 'name': a:name, 'running': 1, 'error': 0, '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 x = jobstart(a:name, 'sh', ['-c',
-            \ (has_key(a:opts, 'dir') ? s:with_cd(a:cmd, a:opts.dir) : a:cmd)
-            \ . ' || echo Error'])
-    if x > 0
-      let job.jobid = x
-      augroup PlugJobControl
-        execute 'autocmd JobActivity' a:name printf('call s:job_handler(%s)', string(a:name))
-      augroup END
+    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  = x < 0 ? 'sh is not executable' :
+      let job.result  = jid < 0 ? 'sh is not executable' :
             \ 'Invalid arguments (or job table is full)'
     endif
   else
@@ -885,10 +905,6 @@ function! s:spawn(name, cmd, opts)
 endfunction
 
 function! s:reap(name)
-  if s:nvim
-    silent! execute 'autocmd! PlugJobControl JobActivity' a:name
-  endif
-
   let job = s:jobs[a:name]
   if job.error
     call add(s:update.errors, a:name)
@@ -964,16 +980,18 @@ while 1 " Without TCO, Vim stack is bound to explode
   call s:log(new ? '+' : '*', name, pull ? 'Updating ...' : 'Installing ...')
   redraw
 
-  let checkout = s:shellesc(has_key(spec, 'tag') ? spec.tag : spec.branch)
-  let merge = s:shellesc(has_key(spec, 'tag') ? spec.tag : 'origin/'.spec.branch)
+  let has_tag = has_key(spec, 'tag')
+  let checkout = s:shellesc(has_tag ? spec.tag : spec.branch)
+  let merge = s:shellesc(has_tag ? spec.tag : 'origin/'.spec.branch)
 
   if !new
     let [valid, msg] = s:git_valid(spec, 0)
     if valid
       if pull
+        let fetch_opt = (has_tag && !empty(globpath(spec.dir, '.git/shallow'))) ? '--depth 99999999' : ''
         call s:spawn(name,
-          \ printf('(git fetch %s 2>&1 && git checkout -q %s 2>&1 && git merge --ff-only %s 2>&1 && git submodule update --init --recursive 2>&1)',
-          \ prog, checkout, merge), { 'dir': spec.dir })
+          \ printf('(git fetch %s %s 2>&1 && git checkout -q %s 2>&1 && git merge --ff-only %s 2>&1 && git submodule update --init --recursive 2>&1)',
+          \ fetch_opt, prog, checkout, merge), { 'dir': spec.dir })
       else
         let s:jobs[name] = { 'running': 0, 'result': 'Already installed', 'error': 0 }
       endif
@@ -982,7 +1000,8 @@ while 1 " Without TCO, Vim stack is bound to explode
     endif
   else
     call s:spawn(name,
-          \ printf('git clone %s --recursive %s -b %s %s 2>&1',
+          \ printf('git clone %s %s --recursive %s -b %s %s 2>&1',
+          \ has_tag ? '' : s:clone_opt,
           \ prog,
           \ s:shellesc(spec.uri),
           \ checkout,
@@ -999,12 +1018,16 @@ endwhile
 endfunction
 
 function! s:update_python()
-python << EOF
+let py_exe = has('python3') ? 'python3' : 'python'
+execute py_exe "<< EOF"
 """ Due to use of signals this function is POSIX only. """
 import datetime
 import functools
 import os
-import Queue
+try:
+  import queue
+except ImportError:
+  import Queue as queue
 import random
 import re
 import shutil
@@ -1016,18 +1039,27 @@ 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_THREADS = {}
 
-class CmdTimedOut(Exception):
+class BaseExc(Exception):
+  def __init__(self, msg):
+    self._msg = msg
+  @property
+  def msg(self):
+    return self._msg
+class CmdTimedOut(BaseExc):
   pass
-class CmdFailed(Exception):
+class CmdFailed(BaseExc):
   pass
-class InvalidURI(Exception):
+class InvalidURI(BaseExc):
   pass
 class Action(object):
   INSTALL, UPDATE, ERROR, DONE = ['+', '*', 'x', '-']
@@ -1050,14 +1082,14 @@ class GLog(object):
     fname = cls.LOGDIR + os.path.sep + name
     with open(fname, 'ab') as flog:
       ltime = datetime.datetime.now().strftime("%H:%M:%S.%f")
-      msg = '[{},{}] {}{}'.format(name, ltime, msg, '\n')
-      flog.write(msg)
+      msg = '[{0},{1}] {2}{3}'.format(name, ltime, msg, '\n')
+      flog.write(msg.encode())
 
 class Buffer(object):
-  def __init__(self, lock, num_plugs):
+  def __init__(self, lock, num_plugs, is_pull, is_win):
     self.bar = ''
-    self.event = 'Updating' if vim.eval('s:update.pull') == '1' else 'Installing'
-    self.is_win = vim.eval('s:is_win') == '1'
+    self.event = 'Updating' if is_pull else 'Installing'
+    self.is_win = is_win
     self.lock = lock
     self.maxy = int(vim.eval('winheight(".")'))
     self.num_plugs = num_plugs
@@ -1065,7 +1097,7 @@ class Buffer(object):
   def _where(self, name):
     """ Find first line with name in current buffer. Return line num. """
     found, lnum = False, 0
-    matcher = re.compile('^[-+x*] {}:'.format(name))
+    matcher = re.compile('^[-+x*] {0}:'.format(name))
     for line in vim.current.buffer:
       if matcher.search(line) is not None:
         found = True
@@ -1078,29 +1110,26 @@ class Buffer(object):
 
   def header(self):
     curbuf = vim.current.buffer
-    curbuf[0] = self.event + ' plugins ({}/{})'.format(len(self.bar), self.num_plugs)
+    curbuf[0] = self.event + ' plugins ({0}/{1})'.format(len(self.bar), self.num_plugs)
 
     num_spaces = self.num_plugs - len(self.bar)
-    curbuf[1] = '[{}{}]'.format(self.bar, num_spaces * ' ')
+    curbuf[1] = '[{0}{1}]'.format(self.bar, num_spaces * ' ')
 
-    vim.command('normal! 2G')
-    if not self.is_win:
-      vim.command('redraw')
-
-  def write(self, *args, **kwargs):
     with self.lock:
-      self._write(*args, **kwargs)
+      vim.command('normal! 2G')
+      if not self.is_win:
+        vim.command('redraw')
 
-  def _write(self, action, name, lines):
+  def write(self, action, name, lines):
     first, rest = lines[0], lines[1:]
-    msg = ['{} {}{}{}'.format(action, name, ': ' if first else '', first)]
+    msg = ['{0} {1}{2}{3}'.format(action, name, ': ' if first else '', first)]
     padded_rest = ['    ' + line for line in rest]
     msg.extend(padded_rest)
 
     try:
       if action == Action.ERROR:
         self.bar += 'x'
-        vim.command("call add(s:update.errors, '{}')".format(name))
+        vim.command("call add(s:update.errors, '{0}')".format(name))
       elif action == Action.DONE:
         self.bar += '='
 
@@ -1108,7 +1137,7 @@ class Buffer(object):
       lnum = self._where(name)
       if lnum != -1: # Found matching line num
         del curbuf[lnum]
-        if lnum > self.maxy and action in {Action.INSTALL, Action.UPDATE}:
+        if lnum > self.maxy and action in set([Action.INSTALL, Action.UPDATE]):
           lnum = 3
       else:
         lnum = 3
@@ -1143,7 +1172,7 @@ class Command(object):
           for count in range(3, 0, -1):
             if G_STOP.is_set():
               raise KeyboardInterrupt
-            msg = 'Timeout. Will retry in {} second{} ...'.format(
+            msg = 'Timeout. Will retry in {0} second{1} ...'.format(
                 count, 's' if count != 1 else '')
             self.callback([msg])
             time.sleep(1)
@@ -1162,7 +1191,7 @@ class Command(object):
     proc = None
     first_line = True
     try:
-      tfile = tempfile.NamedTemporaryFile()
+      tfile = tempfile.NamedTemporaryFile(mode='w+b', delete=False)
       proc = subprocess.Popen(self.cmd, cwd=self.cmd_dir, stdout=tfile,
           stderr=subprocess.STDOUT, shell=True, preexec_fn=os.setsid)
       while proc.poll() is None:
@@ -1183,7 +1212,7 @@ class Command(object):
           raise CmdTimedOut(['Timeout!'])
 
       tfile.seek(0)
-      result = [line.rstrip() for line in tfile]
+      result = [line.decode().rstrip() for line in tfile]
 
       if proc.returncode != 0:
         msg = ['']
@@ -1195,18 +1224,21 @@ class Command(object):
       if self.clean:
         self.clean()
       raise
+    finally:
+      os.remove(tfile.name)
 
     return result
 
 class Plugin(object):
-  def __init__(self, name, args, buf, lock):
+  def __init__(self, name, args, buf_q, lock):
     self.name = name
     self.args = args
-    self.buf = buf
+    self.buf_q = buf_q
     self.lock = lock
     tag = args.get('tag', 0)
     self.checkout = esc(tag if tag else args['branch'])
     self.merge = esc(tag if tag else 'origin/' + args['branch'])
+    self.tag = tag
 
   def manage(self):
     try:
@@ -1215,15 +1247,15 @@ class Plugin(object):
       else:
         self.install()
         with self.lock:
-          vim.command("let s:update.new['{}'] = 1".format(self.name))
+          thread_vim_command("let s:update.new['{0}'] = 1".format(self.name))
     except (CmdTimedOut, CmdFailed, InvalidURI) as exc:
-      self.write(Action.ERROR, self.name, exc.message)
+      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{}'.format(traceback.format_exc().rstrip())
+      msg = 'Trace:\n{0}'.format(traceback.format_exc().rstrip())
       self.write(Action.ERROR, self.name, msg.split('\n'))
       raise
 
@@ -1239,9 +1271,9 @@ class Plugin(object):
       return _clean
 
     self.write(Action.INSTALL, self.name, ['Installing ...'])
-    callback = functools.partial(self.buf.write, Action.INSTALL, self.name)
-    cmd = 'git clone {} --recursive {} -b {} {} 2>&1'.format(
-        G_PROGRESS, self.args['uri'], self.checkout, esc(target))
+    callback = functools.partial(self.write, Action.INSTALL, self.name)
+    cmd = 'git clone {0} {1} --recursive {2} -b {3} {4} 2>&1'.format(
+        '' if self.tag else G_CLONE_OPT, G_PROGRESS, self.args['uri'], self.checkout, esc(target))
     com = Command(cmd, None, G_TIMEOUT, G_RETRIES, callback, clean(target))
     result = com.attempt_cmd()
     self.write(Action.DONE, self.name, result[-1:])
@@ -1252,17 +1284,18 @@ class Plugin(object):
     expect_uri = re.sub(match, '', self.args['uri'])
     if actual_uri != expect_uri:
       msg = ['',
-             'Invalid URI: {}'.format(actual_uri),
-             'Expected     {}'.format(expect_uri),
+             '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.buf.write, Action.UPDATE, self.name)
-      cmds = ['git fetch {}'.format(G_PROGRESS),
-              'git checkout -q {}'.format(self.checkout),
-              'git merge --ff-only {}'.format(self.merge),
+      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 ''
+      cmds = ['git fetch {0} {1}'.format(fetch_opt, G_PROGRESS),
+              'git checkout -q {0}'.format(self.checkout),
+              'git merge --ff-only {0}'.format(self.merge),
               'git submodule update --init --recursive']
       cmd = ' 2>&1 && '.join(cmds)
       GLog.write(cmd)
@@ -1280,8 +1313,8 @@ class Plugin(object):
     return result[-1]
 
   def write(self, action, name, msg):
-    GLog.write('{} {}: {}'.format(action, name, '\n'.join(msg)))
-    self.buf.write(action, name, msg)
+    GLog.write('{0} {1}: {2}'.format(action, name, '\n'.join(msg)))
+    self.buf_q.put((action, name, msg))
 
 class PlugThread(thr.Thread):
   def __init__(self, tname, args):
@@ -1291,17 +1324,21 @@ class PlugThread(thr.Thread):
 
   def run(self):
     thr.current_thread().name = self.tname
-    work_q, lock, buf = self.args
+    buf_q, work_q, lock = self.args
 
     try:
       while not G_STOP.is_set():
         name, args = work_q.get_nowait()
-        GLog.write('{}: Dir {}'.format(name, args['dir']))
-        plug = Plugin(name, args, buf, lock)
+        GLog.write('{0}: Dir {1}'.format(name, args['dir']))
+        plug = Plugin(name, args, buf_q, lock)
         plug.manage()
         work_q.task_done()
-    except Queue.Empty:
+    except queue.Empty:
       GLog.write('Queue now empty.')
+    finally:
+      global G_THREADS
+      with lock:
+        del G_THREADS[thr.current_thread().name]
 
 class RefreshThread(thr.Thread):
   def __init__(self, lock):
@@ -1312,19 +1349,26 @@ class RefreshThread(thr.Thread):
   def run(self):
     while self.running:
       with self.lock:
-        vim.command('noautocmd normal! a')
+        thread_vim_command('noautocmd normal! a')
       time.sleep(0.2)
 
   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)
+  buf = os.read(fread, 100000).decode()
   os.close(fread)
 
   line = buf.rstrip('\r\n')
@@ -1341,34 +1385,42 @@ def main():
   if GLog.ON and os.path.exists(GLog.LOGDIR):
     shutil.rmtree(GLog.LOGDIR)
 
-  threads = []
   nthreads = int(vim.eval('s:update.threads'))
   plugs = vim.eval('s:update.todo')
   mac_gui = vim.eval('s:mac_gui') == '1'
   is_win = vim.eval('s:is_win') == '1'
-  GLog.write('Plugs: {}'.format(plugs))
-  GLog.write('PULL: {}, WIN: {}, MAC: {}'.format(G_PULL, is_win, mac_gui))
-  GLog.write('Num Threads: {}'.format(nthreads))
+  GLog.write('Plugs: {0}'.format(plugs))
+  GLog.write('PULL: {0}, WIN: {1}, MAC: {2}'.format(G_PULL, is_win, mac_gui))
+  GLog.write('Num Threads: {0}'.format(nthreads))
 
   lock = thr.Lock()
-  buf = Buffer(lock, len(plugs))
-  work_q = Queue.Queue()
+  buf = Buffer(lock, len(plugs), G_PULL, is_win)
+  buf_q, work_q = queue.Queue(), queue.Queue()
   for work in plugs.items():
     work_q.put(work)
 
   GLog.write('Starting Threads')
+  global G_THREADS
   for num in range(nthreads):
     tname = 'PlugT-{0:02}'.format(num)
-    thread = PlugThread(tname, (work_q, lock, buf))
+    thread = PlugThread(tname, (buf_q, work_q, lock))
     thread.start()
-    threads.append(thread)
+    G_THREADS[tname] = thread
   if mac_gui:
     rthread = RefreshThread(lock)
     rthread.start()
 
-  GLog.write('Joining Live Threads')
-  for thread in threads:
-    thread.join()
+  GLog.write('Buffer Writing Loop')
+  while not buf_q.empty() or len(G_THREADS) != 0:
+    try:
+      action, name, msg = buf_q.get(True, 0.25)
+      buf.write(action, name, msg)
+      buf_q.task_done()
+    except queue.Empty:
+      pass
+    except KeyboardInterrupt:
+      G_STOP.set()
+
   if mac_gui:
     rthread.stop()
     rthread.join()
@@ -1536,6 +1588,7 @@ function! s:update_ruby()
     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
@@ -1565,7 +1618,8 @@ function! s:update_ruby()
               else
                 if pull
                   log.call name, 'Updating ...', :update
-                  bt.call "#{cd} #{dir} && git fetch #{progress} 2>&1 && git checkout -q #{checkout} 2>&1 && git merge --ff-only #{merge} 2>&1 && #{subm}", name, :update, nil
+                  fetch_opt = (tag && File.exist?(File.join(dir, '.git/shallow'))) ? '--depth 99999999' : ''
+                  bt.call "#{cd} #{dir} && git fetch #{fetch_opt} #{progress} 2>&1 && git checkout -q #{checkout} 2>&1 && git merge --ff-only #{merge} 2>&1 && #{subm}", name, :update, nil
                 else
                   [true, skip]
                 end
@@ -1573,7 +1627,7 @@ function! s:update_ruby()
             else
               d = esc dir.sub(%r{[\\/]+$}, '')
               log.call name, 'Installing ...', :install
-              bt.call "git clone #{progress} --recursive #{uri} -b #{checkout} #{d} 2>&1", name, :install, proc {
+              bt.call "git clone #{clone_opt unless tag} #{progress} --recursive #{uri} -b #{checkout} #{d} 2>&1", name, :install, proc {
                 FileUtils.rm_rf dir
               }
             end
@@ -1623,14 +1677,14 @@ endfunction
 
 function! s:system(cmd, ...)
   try
-    let sh = &shell
+    let [sh, shrd] = [&shell, &shellredir]
     if !s:is_win
-      set shell=sh
+      set shell=sh shellredir=>%s\ 2>&1
     endif
     let cmd = a:0 > 0 ? s:with_cd(a:cmd, a:1) : a:cmd
     return system(s:is_win ? '('.cmd.')' : cmd)
   finally
-    let &shell = sh
+    let [&shell, &shellredir] = [sh, shrd]
   endtry
 endfunction
 
@@ -1677,6 +1731,12 @@ function! s:git_valid(spec, check_branch)
   return [ret, msg]
 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 unused plugins in '.g:plug_home)
@@ -1725,9 +1785,7 @@ function! s:clean(force)
     call inputrestore()
     if yes
       for dir in todo
-        if isdirectory(dir)
-          call s:system((s:is_win ? 'rmdir /S /Q ' : 'rm -rf ') . s:shellesc(dir))
-        endif
+        call s:rm_rf(dir)
       endfor
       call append(line('$'), 'Removed.')
     else
@@ -1738,55 +1796,30 @@ function! s:clean(force)
 endfunction
 
 function! s:upgrade()
-  let new = s:me . '.new'
-  echo 'Downloading '. s:plug_src
+  echo 'Downloading the latest version of vim-plug'
   redraw
+  let tmp = tempname()
+  let new = tmp . '/plug.vim'
+
   try
-    if executable('curl')
-      let output = s:system(printf('curl -fLo %s %s', s:shellesc(new), s:plug_src))
-      if v:shell_error
-        throw get(s:lines(output), -1, v:shell_error)
-      endif
-    elseif s:ruby
-      call s:upgrade_using_ruby(new)
-    elseif s:py2
-      call s:upgrade_using_python(new)
-    else
-      return s:err('Missing: curl executable, ruby support or python support')
+    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
-  catch
-    return s:err('Error upgrading vim-plug: '. v:exception)
+
+    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
-
-  if readfile(s:me) ==# readfile(new)
-    echo 'vim-plug is already up-to-date'
-    silent! call delete(new)
-    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
-endfunction
-
-function! s:upgrade_using_ruby(new)
-  ruby << EOF
-  require 'open-uri'
-  File.open(VIM::evaluate('a:new'), 'w') do |f|
-    f << open(VIM::evaluate('s:plug_src')).read
-  end
-EOF
-endfunction
-
-function! s:upgrade_using_python(new)
-python << EOF
-import urllib
-import vim
-psrc, dest = vim.eval('s:plug_src'), vim.eval('a:new')
-urllib.urlretrieve(psrc, dest)
-EOF
 endfunction
 
 function! s:upgrade_specs()
@@ -1904,7 +1937,7 @@ function! s:preview_commit()
   execute 'pedit' sha
   wincmd P
   setlocal filetype=git buftype=nofile nobuflisted
-  execute 'silent read !cd' s:shellesc(g:plugs[name].dir) '&& git show' sha
+  execute 'silent read !cd' s:shellesc(g:plugs[name].dir) '&& git show --pretty=medium' sha
   normal! gg"_dd
   wincmd p
 endfunction

test/fixtures/.gitignore

@@ -1,5 +0,0 @@
-fzf*
-xxx
-yyy
-z1
-z2

test/fixtures/ftplugin-msg/ftplugin/c.vim

@@ -1 +0,0 @@
-echomsg 'ftplugin'

test/regressions.vader

@@ -19,7 +19,7 @@ Execute (#112 On-demand loading should not suppress messages from ftplugin):
 
 **********************************************************************
 Execute (#114 Should not contain empty path in &rtp):
-  call plug#begin('$TMPDIR/plugged')
+  call plug#begin('/tmp/plugged')
   call plug#end()
 
   Log &rtp
@@ -34,7 +34,8 @@ Execute (#130 Proper cleanup of on-demand loading triggers):
   augroup END
 
   " Cleared on command
-  call plug#begin('$TMPDIR/plugged')
+  call ReloadPlug()
+  call plug#begin('/tmp/plugged')
   Plug 'junegunn/vim-emoji', { 'on':  ['EmojiCommand', 'EmojiCommand2', '<Plug>(EmojiMapping)'] }
   call plug#end()
   PlugInstall | q
@@ -50,7 +51,8 @@ Execute (#130 Proper cleanup of on-demand loading triggers):
   Assert empty(mapcheck('<Plug>(EmojiMapping)')), '<Plug>(EmojiMapping) defined'
 
   " Cleared on FileType
-  call plug#begin('$TMPDIR/plugged')
+  call ReloadPlug()
+  call plug#begin('/tmp/plugged')
   Plug 'junegunn/vim-emoji', { 'on': ['EmojiCommandExtra', '<Plug>(EmojiMappingExtra)'], 'for': ['emoji'] }
   call plug#end()
 
@@ -64,25 +66,25 @@ Execute (#130 Proper cleanup of on-demand loading triggers):
 
 **********************************************************************
 Execute (#131 Syntax error):
-  call plug#begin('/no-permission')
+  call plug#begin('/proc/no-permission')
   Plug 'junegunn/vim-emoji'
   call plug#end()
 
   redir => out
   silent PlugInstall
   redir END
-  Assert out =~ 'Invalid plug directory: /no-permission'
+  Assert out =~ 'Invalid plug directory: /proc/no-permission', out
 
 **********************************************************************
 Execute (#139-1 Using new remote branch):
   " Make sure to remove the clone
-  call plug#begin('$TMPDIR/plugged')
+  call plug#begin('/tmp/plugged')
   call plug#end()
   PlugClean!
 
   " Install master branch
-  call plug#begin('$TMPDIR/plugged')
-  Plug expand('file:///$TMPDIR/new-branch')
+  call plug#begin('/tmp/plugged')
+  Plug expand('file:////tmp/new-branch')
   call plug#end()
   PlugUpdate
 
@@ -93,14 +95,14 @@ Execute (#139-1 Using new remote branch):
   Assert !exists('g:baz'), 'g:baz should not be found'
 
   " Create a new branch on origin
-  call system('cd $TMPDIR/new-branch && git checkout -b new &&'
+  call system('cd /tmp/new-branch && git checkout -b new &&'
       \. 'echo "let g:bar = 1" > plugin/bar.vim && git add plugin/bar.vim &&'
       \. 'git commit -m second')
 
   " We're setting up two plugins so that parallel installer is used
-  call plug#begin('$TMPDIR/plugged')
+  call plug#begin('/tmp/plugged')
   Plug 'junegunn/seoul256.vim'
-  Plug expand('file:///$TMPDIR/new-branch'), { 'branch': 'new' }
+  Plug expand('file:////tmp/new-branch'), { 'branch': 'new' }
   call plug#end()
   PlugUpdate
   silent %y
@@ -123,14 +125,14 @@ Expect:
 
 Execute (#139-2 Using yet another new remote branch):
   " Create another branch on origin
-  call system('cd $TMPDIR/new-branch && git checkout master &&'
+  call system('cd /tmp/new-branch && git checkout master &&'
       \. 'git checkout -b brand-new &&'
       \. 'echo "let g:baz = 1" > plugin/baz.vim && git add plugin/baz.vim &&'
       \. 'git commit -m third')
 
   " Test Vim installer here
-  call plug#begin('$TMPDIR/plugged')
-  Plug expand('file:///$TMPDIR/new-branch'), { 'branch': 'brand-new' }
+  call plug#begin('/tmp/plugged')
+  Plug expand('file:////tmp/new-branch'), { 'branch': 'brand-new' }
   call plug#end()
   PlugUpdate
   silent %y
@@ -152,24 +154,25 @@ Expect:
 
 Execute (#139-3 Should fail when not possible to fast-forward):
   " Commit on cloned repo
-  call system('cd $TMPDIR/plugged/new-branch && git checkout master &&'
+  call system('cd /tmp/plugged/new-branch && git checkout master &&'
       \. 'touch foobar && git add foobar && git commit -m foobar')
 
   " Different commit on remote
-  call system('cd $TMPDIR/new-branch && git checkout master &&'
+  call system('cd /tmp/new-branch && git checkout master &&'
       \. 'touch foobaz && git add foobaz && git commit -m foobaz')
 
   for multi in [0, 1]
-    call plug#begin('$TMPDIR/plugged')
+    call plug#begin('/tmp/plugged')
     if multi
       Plug 'junegunn/seoul256.vim'
     endif
-    Plug expand('file:///$TMPDIR/new-branch')
+    Plug expand('file:////tmp/new-branch')
     call plug#end()
     PlugUpdate
     silent %y
     Assert @" =~ 'Not possible to fast-forward', @"
   endfor
+  q
 
 **********************************************************************
 Execute (#145: Merging on-demand loading triggers - cmd):
@@ -188,6 +191,7 @@ Execute (#145: Merging on-demand loading triggers - cmd):
 Execute (#145: Merging on-demand loading triggers - map):
   unlet! g:xxx g:yyy
 
+  call ReloadPlug()
   call plug#begin()
   Plug '$PLUG_FIXTURES/xxx', { 'on': '<Plug>(xxx)' }
   Plug '$PLUG_FIXTURES/yyy', { 'on': ['<Plug>(xxx)' ,'<Plug>(yyy)' ] }
@@ -206,7 +210,7 @@ Execute (#159: shell=/bin/tcsh):
   let org = &shell
   try
     set shell=/bin/tcsh
-    call plug#begin('$TMPDIR/plugged')
+    call plug#begin('/tmp/plugged')
     Plug 'junegunn/seoul256.vim'
     call plug#end()
 
@@ -220,9 +224,42 @@ Execute (#159: shell=/bin/tcsh):
 
 **********************************************************************
 Execute (#154: Spaces in &rtp should not be escaped):
-  call plug#begin('$TMPDIR/plug it')
+  call plug#begin('/tmp/plug it')
   Plug 'seoul256 vim'
   call plug#end()
   Log &rtp
   Assert stridx(&rtp, 'plug it/seoul256 vim') >= 0
 
+**********************************************************************
+Execute (#184: Duplicate entries in &rtp):
+  call plug#begin('/tmp/plugged')
+  Plug 'plugin1'
+    \| Plug 'plugin0'
+
+  Plug 'plugin2'
+    \| Plug 'plugin0'
+    \| Plug 'plugin1'
+  call plug#end()
+
+  Log &rtp
+  AssertEqual 3, len(filter(split(&rtp, ','), 'stridx(v:val, "plugged") >= 0'))
+
+**********************************************************************
+Execute (#236: Plugin removed from &rtp when .vimrc is reloaded):
+  unlet! g:loaded_easy_align_plugin
+  silent! delc EasyAlign
+
+  call ReloadPlug()
+  call plug#begin('/tmp/plugged')
+  Plug 'junegunn/vim-easy-align', { 'on': 'EasyAlign' }
+  call plug#end()
+  PlugInstall | q
+
+  Assert &rtp !~ '/vim-easy-align', 'Plugin should not be in &rtp'
+  %EasyAlign=
+  Assert &rtp =~ '/vim-easy-align', 'Plugin should be in &rtp'
+
+  call plug#begin('/tmp/plugged')
+  Plug 'junegunn/vim-easy-align', { 'on': 'EasyAlign' }
+  call plug#end()
+  Assert &rtp =~ '/vim-easy-align', 'Plugin should still be in &rtp'

test/run

@@ -1,11 +1,16 @@
 #!/bin/bash
 
-cd $(dirname $BASH_SOURCE)
-cd ..
-PLUG_SRC=$(pwd)/plug.vim
-cd - > /dev/null
+cd $(dirname "${BASH_SOURCE[0]}")
 
-export PLUG_FIXTURES=$(pwd)/fixtures
+export BASE="$PWD"
+export PLUG_SRC="$PWD/../plug.vim"
+export PLUG_FIXTURES="$PWD/fixtures"
+mkdir -p "$PLUG_FIXTURES"
+
+cat > /tmp/mini-vimrc << VIMRC
+set rtp+=/tmp/junegunn/vader.vim
+set shell=/bin/bash
+VIMRC
 
 clone() {
   if [ ! -d $2 ]; then
@@ -13,25 +18,25 @@ clone() {
   fi
 }
 
-# Clone
-cd /tmp
-mkdir -p junegunn vim-scripts jg
-for repo in vader.vim goyo.vim rust.vim seoul256.vim vim-easy-align vim-fnr \
-            vim-oblique vim-pseudocl vim-redis vim-emoji; do
-  clone https://github.com/junegunn/${repo}.git junegunn/$repo &
-done
-clone https://github.com/vim-scripts/beauty256.git vim-scripts/beauty256 &
+clone_repos() {
+  cd /tmp
+  mkdir -p junegunn vim-scripts jg
+  for repo in vader.vim goyo.vim rust.vim seoul256.vim vim-easy-align vim-fnr \
+              vim-oblique vim-pseudocl vim-redis vim-emoji; do
+    clone https://github.com/junegunn/${repo}.git junegunn/$repo &
+  done
+  clone https://github.com/vim-scripts/beauty256.git vim-scripts/beauty256 &
+  clone https://github.com/junegunn/fzf.git fzf &
+  wait
 
-rm -rf $PLUG_FIXTURES/fzf
-clone https://github.com/junegunn/fzf.git $PLUG_FIXTURES/fzf-staged &
-wait
+  clone junegunn/vim-emoji jg/vim-emoji
+  cd junegunn/seoul256.vim && git checkout no-t_co && git checkout master
 
-(cd junegunn/seoul256.vim &&
-  git checkout no-t_co && git checkout master) > /dev/null 2>&1
-clone junegunn/vim-emoji jg/vim-emoji
-cd - > /dev/null
+  cd "$BASE"
+}
 
 make_dirs() {
+  rm -rf "$PLUG_FIXTURES/$1"
   mkdir -p "$PLUG_FIXTURES/$1"
   cd "$PLUG_FIXTURES/$1"
   mkdir -p autoload colors ftdetect ftplugin indent plugin syntax
@@ -46,17 +51,15 @@ make_dirs() {
     call add(g:total_order, s:name)
 EOF
   done
-  cd - > /dev/null
+
+  cd "$BASE"
 }
 
-init() {
-  rm -rf $PLUG_FIXTURES/{xxx,yyy,z1,z2}
-  rm -rf $TMPDIR/new-branch
-
+prepare() {
   make_dirs xxx/ xxx
   make_dirs xxx/after xxx
-  mkdir -p $PLUG_FIXTURES/xxx/doc
-  cat > $PLUG_FIXTURES/xxx/doc/xxx.txt << DOC
+  mkdir -p "$PLUG_FIXTURES/xxx/doc"
+  cat > "$PLUG_FIXTURES/xxx/doc/xxx.txt" << DOC
 hello *xxx*
 DOC
 
@@ -66,28 +69,27 @@ DOC
   make_dirs z1/ z1
   make_dirs z2/ z2
 
-  (
-    cd $TMPDIR
-    git init new-branch
-    cd new-branch
-    mkdir plugin
-    echo 'let g:foo = 1' > plugin/foo.vim
-    git add plugin/foo.vim
-    git commit -m initial
-  )
+  rm -rf "$PLUG_FIXTURES/ftplugin-msg"
+  mkdir -p "$PLUG_FIXTURES/ftplugin-msg/ftplugin"
+  echo "echomsg 'ftplugin'" > "$PLUG_FIXTURES/ftplugin-msg/ftplugin/c.vim"
+
+  rm -rf /tmp/new-branch
+  cd /tmp
+  git init new-branch
+  cd new-branch
+  mkdir plugin
+  echo 'let g:foo = 1' > plugin/foo.vim
+  git add plugin/foo.vim
+  git commit -m initial
+
+  cd "$BASE"
 }
 
-cat > /tmp/mini-vimrc << VIMRC
-set rtp+=/tmp/junegunn/vader.vim
-set shell=/bin/bash
-source $PLUG_SRC
-VIMRC
-
-[ -z "$TMPDIR" ] && export TMPDIR=/tmp/
-init
+clone_repos
+prepare
 if [ "$1" = '!' ]; then
   /usr/local/bin/vim -Nu /tmp/mini-vimrc -c 'Vader! test.vader' > /dev/null &&
-  init &&
+  prepare &&
   /usr/local/bin/vim -Nu /tmp/mini-vimrc -c 'let g:plug_threads = 1 | Vader! test.vader' > /dev/null
 else
   /usr/local/bin/vim -Nu /tmp/mini-vimrc -c 'Vader test.vader'

test/test.vader

@@ -1,18 +1,20 @@
 Execute (Initialize test environment):
   Save &rtp, g:plugs, g:plug_home, g:plug_window
-
-  let first_rtp = split(&rtp, ',')[0]
-  let last_rtp  = split(&rtp, ',')[-1]
-
-  let vader = fnamemodify(globpath(&rtp, 'autoload/vader.vim'), ':h:h')
-  let plug  = fnamemodify(globpath(&rtp, 'autoload/plug.vim'), ':h:h')
-  set rtp=$HOME/.vim,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,$HOME/.vim/after
-  execute 'set rtp^='.vader
-  execute 'set rtp^='.plug
-  let basertp = &rtp
-
   unlet! g:plugs g:plug_home g:plug_window
+
   let g:plug_url_format = 'file:///tmp/%s'
+  let g:base_rtp        = &rtp
+  let g:first_rtp       = split(&rtp, ',')[0]
+  let g:last_rtp        = split(&rtp, ',')[-1]
+  let g:temp_plugged    = tempname()
+  if !exists('$PLUG_SRC')
+    let $PLUG_SRC = globpath(&rtp, 'autoload/plug.vim')
+  endif
+
+  " Temporarily patch plug.vim
+  call system('cp $PLUG_SRC $PLUG_SRC.org')
+  call writefile(extend(readfile($PLUG_SRC),
+  \ ['function! ResetPlug()', 'let s:loaded = {}', 'endfunction']), $PLUG_SRC)
 
   set t_Co=256
   colo default
@@ -39,12 +41,26 @@ Execute (Initialize test environment):
     endif
   endfunction
 
+  function! RmRf(file)
+    call system(printf('rm -rf "%s"', a:file))
+  endfunction
+
+  function! ReloadPlug()
+    call ResetPlug()
+    source $PLUG_SRC
+    let &rtp = g:base_rtp
+  endfunction
+
+  source $PLUG_SRC
+
 Execute (Print Interpreter Version):
   redir => out
   if has('ruby')
     silent ruby puts 'Ruby: ' + RUBY_VERSION
   elseif has('python')
     silent python import sys; svi = sys.version_info; print 'Python: {}.{}.{}'.format(svi[0], svi[1], svi[2])
+  elseif has('python3')
+    silent python3 import sys; svi = sys.version_info; print('Python: {}.{}.{}'.format(svi[0], svi[1], svi[2]))
   endif
   redir END
   Log substitute(out, '\n', '', 'g')
@@ -53,20 +69,18 @@ Include: workflow.vader
 Include: regressions.vader
 
 Execute (Cleanup):
-  silent! call system('rm -rf '.temp_plugged)
-  silent! call system('rm -rf '.temp_plugged)
-  silent! call rename(fzf, expand('$PLUG_FIXTURES/fzf-staged'))
-  silent! unlet g:plugs
-  silent! unlet g:plug_home
-  silent! unlet g:plug_url_format
-  silent! unlet temp_plugged vader plug basertp save_rtp repo lnum fzf out tabnr found len
+  silent! call RmRf(g:temp_plugged)
+  silent! unlet g:plugs g:plug_home g:plug_url_format
+  silent! unlet g:temp_plugged g:first_rtp g:last_rtp g:base_rtp out
   silent! delf PlugStatusSorted
   silent! delf AssertExpect
   silent! delf PlugUpdated
   silent! delf EnsureLoaded
+  silent! delf ReloadPlug
   silent! delc AssertExpect
   silent! unmap /
   silent! unmap ?
+  call system('mv $PLUG_SRC.org $PLUG_SRC')
 
   Restore
 

test/workflow.vader

@@ -17,25 +17,25 @@ Execute (plug#begin() without path argument with empty &rtp):
   redir END
   Assert stridx(out, 'Unable to determine plug home') >= 0
   let &rtp = save_rtp
+  unlet save_rtp
 
 Execute (plug#begin(path)):
-  let temp_plugged = tempname()
-  call plug#begin(temp_plugged.'/')
+  call plug#begin(g:temp_plugged.'/')
   Assert g:plug_home !~ '[/\\]$', 'Trailing / should be stripped from g:plug_home'
 
   AssertEqual 0, len(g:plugs)
-  AssertEqual temp_plugged, g:plug_home
-  AssertEqual basertp, &rtp
+  AssertEqual g:temp_plugged, g:plug_home
+  AssertEqual g:base_rtp, &rtp
 
 Execute (Subsequent plug#begin() calls will reuse g:plug_home):
   call plug#begin()
-  AssertEqual temp_plugged, g:plug_home
+  AssertEqual g:temp_plugged, g:plug_home
 
 Execute (Test Plug command):
 ^ Git repo with branch (DEPRECATED. USE BRANCH OPTION)
   Plug 'junegunn/seoul256.vim', { 'branch': 'yes-t_co' }
   AssertEqual 'file:///tmp/junegunn/seoul256.vim', g:plugs['seoul256.vim'].uri
-  AssertEqual join([temp_plugged, 'seoul256.vim/'], '/'), g:plugs['seoul256.vim'].dir
+  AssertEqual join([g:temp_plugged, 'seoul256.vim/'], '/'), g:plugs['seoul256.vim'].dir
   AssertEqual 'yes-t_co', g:plugs['seoul256.vim'].branch
 
   Plug 'junegunn/seoul256.vim', { 'branch': 'no-t_co' } " Using branch option
@@ -44,7 +44,7 @@ Execute (Test Plug command):
 ^ Git repo with tag (DEPRECATED. USE TAG OPTION)
   Plug 'junegunn/goyo.vim', '1.5.2'
   AssertEqual 'file:///tmp/junegunn/goyo.vim', g:plugs['goyo.vim'].uri
-  AssertEqual join([temp_plugged, 'goyo.vim/'], '/'), g:plugs['goyo.vim'].dir
+  AssertEqual join([g:temp_plugged, 'goyo.vim/'], '/'), g:plugs['goyo.vim'].dir
   AssertEqual '1.5.2', g:plugs['goyo.vim'].tag
 
   Plug 'junegunn/goyo.vim', { 'tag': '1.5.3' } " Using tag option
@@ -54,7 +54,7 @@ Execute (Test Plug command):
   Plug 'file:///tmp/jg/vim-emoji'
   AssertEqual 'file:///tmp/jg/vim-emoji', g:plugs['vim-emoji'].uri
   AssertEqual 'master', g:plugs['vim-emoji'].branch
-  AssertEqual join([temp_plugged, 'vim-emoji/'], '/'), g:plugs['vim-emoji'].dir
+  AssertEqual join([g:temp_plugged, 'vim-emoji/'], '/'), g:plugs['vim-emoji'].dir
 
   " vim-scripts/
   Plug 'beauty256'
@@ -66,7 +66,7 @@ Execute (Test Plug command):
 Execute (Plug command with dictionary option):
   Log string(g:plugs)
   Plug 'junegunn/seoul256.vim', { 'branch': 'no-t_co', 'rtp': '././' }
-  AssertEqual join([temp_plugged, 'seoul256.vim/'], '/'), g:plugs['seoul256.vim'].dir
+  AssertEqual join([g:temp_plugged, 'seoul256.vim/'], '/'), g:plugs['seoul256.vim'].dir
   AssertEqual '././', g:plugs['seoul256.vim'].rtp
 
   Log string(g:plugs)
@@ -84,9 +84,9 @@ Execute (PlugClean before installation):
 
 Execute (plug#end() updates &rtp):
   call plug#end()
-  Assert len(&rtp) > len(basertp)
-  AssertEqual first_rtp, split(&rtp, ',')[0]
-  AssertEqual last_rtp, split(&rtp, ',')[-1]
+  Assert len(&rtp) > len(g:base_rtp)
+  AssertEqual g:first_rtp, split(&rtp, ',')[0]
+  AssertEqual g:last_rtp, split(&rtp, ',')[-1]
 
 Execute (Yet, plugins are not available):
   Assert empty(globpath(&rtp, 'autoload/emoji.vim'))
@@ -270,10 +270,13 @@ Execute (PlugDiff - 'No updates.'):
   AssertEqual 'No updates.', getline(1)
   q
 
-Execute (Rollback recent updates, PlugUpdate, then PlugDiff):
+Execute (New commits on remote, PlugUpdate, then PlugDiff):
   for repo in ['seoul256.vim', 'vim-emoji']
-    call system(printf('cd %s/%s && git reset HEAD^^ --hard', g:plug_home, repo))
+    for _ in range(2)
+      call system(printf('cd /tmp/junegunn/%s && git commit --allow-empty -m "update"', repo))
+    endfor
   endfor
+  unlet repo
   PlugUpdate
 
   " Now we have updates
@@ -307,6 +310,7 @@ Execute (Rollback recent updates, PlugUpdate, then PlugDiff):
   " [[ motion
   execute 'normal 0[['
   AssertEqual lnum, line('.')
+  unlet lnum
   AssertEqual 3, col('.')
 
   " X key to revert the update
@@ -346,12 +350,14 @@ Execute (Reuse Plug window in another tab):
   AssertEqual tabnr, tabpagenr()
   normal! gt
   q
+  unlet tabnr
 
 **********************************************************************
 ~ On-demand loading / Partial installation/update ~
 **********************************************************************
 
 Execute (Trying to execute on-demand commands when plugin is not installed):
+  call ReloadPlug()
   call plug#begin()
   Plug 'junegunn/vim-easy-align', { 'on': ['EasyAlign', 'LiveEasyAlign'] }
   call plug#end()
@@ -364,16 +370,22 @@ Execute (Trying to execute on-demand commands when plugin is not installed):
   Assert !exists(':LiveEasyAlign')
 
 Execute (New set of plugins):
+  call ReloadPlug()
   call plug#begin()
   Plug 'junegunn/vim-fnr'
   Plug 'junegunn/vim-pseudocl'
   Plug 'junegunn/vim-easy-align', { 'on': 'EasyAlign' }
   Plug 'junegunn/vim-redis',      { 'for': 'redis' }
+  let user_autocmd = {}
+  autocmd! User vim-fnr let user_autocmd.fnr = 1
+  autocmd! User vim-easy-align let user_autocmd.easy_align = 1
+  autocmd! User vim-redis let user_autocmd.redis = 1
   call plug#end()
 
 Execute (Check commands):
   Assert !exists(':FNR'),          'FNR command should not be found'
   Assert !exists(':RedisExecute'), 'RedisExecute command should not be found'
+  Assert empty(user_autocmd)
 
 Execute (Partial PlugInstall):
   PlugInstall vim-fnr vim-easy-align
@@ -383,8 +395,8 @@ Execute (Partial PlugInstall):
   PlugInstall vim-fnr vim-easy-align 1
   AssertExpect 'vim-fnr', 1
   AssertExpect 'vim-easy-align', 1
-  AssertEqual first_rtp, split(&rtp, ',')[0]
-  AssertEqual last_rtp, split(&rtp, ',')[-1]
+  AssertEqual g:first_rtp, split(&rtp, ',')[0]
+  AssertEqual g:last_rtp, split(&rtp, ',')[-1]
   q
 
 Given (Unaligned code):
@@ -403,6 +415,10 @@ Expect (Aligned code):
   a  = 1
   aa = 2
 
+Then (autocmd executed):
+  Assert user_autocmd.easy_align
+  AssertEqual 1, len(user_autocmd)
+
 Given:
 Execute (Partial PlugUpdate):
   PlugUpdate vim-redis
@@ -412,6 +428,11 @@ Execute (On-demand loading based on filetypes):
   Assert !exists(':RedisExecute'), 'RedisExecute command still should not be found'
   set ft=redis
   Assert exists(':RedisExecute'), 'RedisExecute command is now found'
+  Assert user_autocmd.redis
+  AssertEqual 2, len(user_autocmd)
+
+  autocmd! User
+  unlet user_autocmd
 
 **********************************************************************
 ~ Local (unmanaged) plugins
@@ -419,6 +440,7 @@ Execute (On-demand loading based on filetypes):
 
 Execute (Add unmanaged plugin):
   let fzf = expand('$PLUG_FIXTURES/fzf')
+  call RmRf(fzf)
   Log fzf
 
   call plug#begin()
@@ -477,7 +499,8 @@ Execute (PlugStatus should point out that the plugin is missing):
 
 Execute (Deploy unmanaged plugin):
   Assert !exists(':FZF'), ':FZF command should not exist'
-  call rename(expand('$PLUG_FIXTURES/fzf-staged'), fzf)
+  call RmRf(fzf)
+  Log system(printf('cp -r "/tmp/fzf" "%s"', fzf))
 
 Execute (PlugUpdate still should not care):
   PlugUpdate
@@ -497,8 +520,8 @@ Execute (Check &rtp after SomeCommand):
   Assert &rtp !~ 'fzf'
   silent! SomeCommand
   Assert &rtp =~ 'fzf'
-  AssertEqual first_rtp, split(&rtp, ',')[0]
-  AssertEqual last_rtp, split(&rtp, ',')[-1]
+  AssertEqual g:first_rtp, split(&rtp, ',')[0]
+  AssertEqual g:last_rtp, split(&rtp, ',')[-1]
 
 Execute (Common parent):
   call plug#begin()
@@ -512,6 +535,8 @@ Execute (Common parent):
   AssertExpect! '[===]', 1
   q
 
+  unlet fzf
+
 **********************************************************************
 ~ Frozen plugins
 **********************************************************************
@@ -639,8 +664,8 @@ Execute (On update):
   Plug 'junegunn/vim-pseudocl', { 'do': 'touch updated' }
   call plug#end()
 
-  " Reset for updates
-  call system('cd '.g:plugs['vim-pseudocl'].dir.' && git reset --hard HEAD^')
+  " New commits on remote
+  call system('cd /tmp/junegunn/vim-pseudocl && git commit --allow-empty -m "update"')
 
   silent PlugUpdate
   Log getline(1, '$')
@@ -703,8 +728,9 @@ Execute (Using Funcref):
   Plug 'junegunn/vim-pseudocl',   { 'do': function('PlugUpdated') }
   call plug#end()
 
+  call system('cd /tmp/junegunn/vim-easy-align && git commit --allow-empty -m "update"')
   call system('cd '.g:plugs['vim-easy-align'].dir.' && git reset --hard HEAD^')
-  call system('rm -rf '.g:plugs['vim-pseudocl'].dir)
+  call RmRf(g:plugs['vim-pseudocl'].dir)
 
   PlugUpdate
   Log getline(1, '$')
@@ -714,7 +740,7 @@ Execute (Using Funcref):
   Assert filereadable(g:plugs['vim-pseudocl'].dir.'/vim-pseudoclinstalled03'),
     \ 'vim-pseudocl/vim-pseudoclinstalled03 should exist'
 
-  call system('rm -rf '.g:plugs['vim-pseudocl'].dir)
+  call RmRf(g:plugs['vim-pseudocl'].dir)
   PlugInstall!
   q
   Assert filereadable(g:plugs['vim-easy-align'].dir.'/vim-easy-alignunchanged13'),
@@ -737,11 +763,11 @@ Execute (Using Funcref):
 Execute (Using custom dir):
   Assert isdirectory(g:plugs['vim-easy-align'].dir)
 
-  call system('rm -rf '.$TMPDIR.'easy-align')
+  call RmRf('/tmp/easy-align')
   call plug#begin()
-  Plug 'junegunn/vim-easy-align', { 'dir': $TMPDIR.'easy-align' }
+  Plug 'junegunn/vim-easy-align', { 'dir': '/tmp/easy-align' }
   call plug#end()
-  AssertEqual $TMPDIR.'easy-align/', g:plugs['vim-easy-align'].dir
+  AssertEqual '/tmp/easy-align/', g:plugs['vim-easy-align'].dir
 
   PlugClean!
   Assert !isdirectory(g:plugs['vim-easy-align'].dir)
@@ -760,6 +786,7 @@ Before (Clear global vars):
   set rtp-=$PLUG_FIXTURES/xxx/after
 
 Execute (Immediate loading):
+  call ReloadPlug()
   call plug#begin()
   Plug '$PLUG_FIXTURES/xxx'
   call plug#end()
@@ -774,6 +801,7 @@ Execute (Immediate loading):
   endif
 
 Execute (Command-based on-demand loading):
+  call ReloadPlug()
   call plug#begin()
   Plug '$PLUG_FIXTURES/xxx', { 'on': 'XXX' }
   call plug#end()
@@ -787,6 +815,7 @@ Execute (Command-based on-demand loading):
   AssertEqual ['xxx/ftdetect', 'xxx/after/ftdetect', 'xxx/plugin', 'xxx/after/plugin', 'xxx/ftplugin', 'xxx/after/ftplugin', 'xxx/indent', 'xxx/after/indent', 'xxx/syntax', 'xxx/after/syntax'], g:xxx
 
 Execute (Filetype-based on-demand loading):
+  call ReloadPlug()
   call plug#begin()
   Plug '$PLUG_FIXTURES/xxx', { 'for': 'xxx' }
   call plug#end()
@@ -901,7 +930,7 @@ Execute (Open plug window in a new tab):
   normal S
   AssertEqual tabnr, tabpagenr()
   q
-  unlet g:plug_window
+  unlet g:plug_window tabnr
 
 **********************************************************************
 ~ g:plug_url_format
@@ -947,7 +976,7 @@ Execute (Update plugin with U key in normal mode):
   q
 
 Execute (Update plugins with U key in visual mode):
-  silent! call system('rm -rf '.g:plugs['vim-easy-align'].dir)
+  silent! call RmRf(g:plugs['vim-easy-align'].dir)
 
   PlugStatus
   normal VGU
@@ -974,7 +1003,7 @@ Execute (plug#begin should expand env vars):
 
 **********************************************************************
 Execute (Plug directory with comma):
-  call plug#begin(temp_plugged . '/p,l,u,g,g,e,d')
+  call plug#begin(g:temp_plugged . '/p,l,u,g,g,e,d')
   Plug 'junegunn/vim-emoji'
   call plug#end()
   Log &rtp
@@ -984,10 +1013,12 @@ Execute (Plug directory with comma):
   let found = filter(split(globpath(&rtp, 'README.md'), '\n'), 'v:val =~ ","')
   Log found
   AssertEqual 1, len(found)
+  unlet found
 
 **********************************************************************
 Execute (Strict load order):
   let g:total_order = []
+  call ReloadPlug()
   call plug#begin()
   Plug '$PLUG_FIXTURES/xxx'
   Plug '$PLUG_FIXTURES/yyy', { 'for': ['xxx'] }
@@ -1001,6 +1032,7 @@ Execute (Strict load order):
   let len = len(split(&rtp, ','))
 
   let g:total_order = []
+  call ReloadPlug()
   call plug#begin()
   Plug '$PLUG_FIXTURES/xxx', { 'for': ['xxx'] }
   Plug '$PLUG_FIXTURES/yyy'
@@ -1018,6 +1050,9 @@ Execute (Strict load order):
   AssertEqual len + 2, len(split(&rtp, ','))
 
   let g:total_order = []
+  call ReloadPlug()
+  set rtp^=manually-prepended
+  set rtp+=manually-appended
   call plug#begin()
   Plug '$PLUG_FIXTURES/xxx', { 'for': ['xxx'] }
   Plug '$PLUG_FIXTURES/yyy', { 'for': ['xxx'] }
@@ -1051,6 +1086,7 @@ Execute (PlugClean should not try to remove unmanaged plugins inside g:plug_home
 
 **********************************************************************
 Execute (PlugSnapshot / #154 issues with paths containing spaces):
+  let $TMPDIR = '/tmp'
   call plug#begin('$TMPDIR/plug with spaces')
   Plug 'junegunn/vim-easy-align'
   Plug 'junegunn/seoul256.vim'
@@ -1073,3 +1109,60 @@ Execute (PlugSnapshot / #154 issues with paths containing spaces):
   AssertEqual 'snapshot.sh', fnamemodify(expand('%'), ':t')
   q
 
+**********************************************************************
+Execute (#221 Shallow-clone and tag option):
+  call plug#begin(g:temp_plugged)
+  Plug 'junegunn/goyo.vim'
+  call plug#end()
+  PlugInstall
+
+  execute 'cd' g:plugs['goyo.vim'].dir
+  Assert len(split(system('git log --oneline'), '\n')) == 1
+  Assert filereadable('.git/shallow')
+
+  Plug 'junegunn/goyo.vim', { 'tag': '1.5.3' }
+  PlugUpdate
+  q
+
+  Assert len(split(system('git log --oneline'), '\n')) > 1
+  Assert system('git describe --tag') =~ '^1.5.3'
+  Assert !filereadable('.git/shallow')
+  cd -
+
+Execute (#221 Shallow-clone disabled by g:plug_shallow = 0):
+  call plug#begin(g:temp_plugged)
+  call plug#end()
+  PlugClean!
+
+  let g:plug_shallow = 0
+  call plug#begin(g:temp_plugged)
+  Plug 'junegunn/goyo.vim'
+  call plug#end()
+  PlugInstall
+  q
+
+  execute 'cd' g:plugs['goyo.vim'].dir
+  Assert len(split(system('git log --oneline'), '\n')) > 1, 'not shallow'
+  Assert !filereadable('.git/shallow'), 'not shallow'
+  cd -
+  unlet g:plug_shallow
+
+Execute (#221 Shallow-clone disabled by tag):
+  call plug#begin(g:temp_plugged)
+  call plug#end()
+  PlugClean!
+
+  call plug#begin(g:temp_plugged)
+  Plug 'junegunn/goyo.vim', { 'tag': '1.5.3' }
+  call plug#end()
+  Assert !isdirectory(g:plugs['goyo.vim'].dir)
+  PlugInstall
+  Assert isdirectory(g:plugs['goyo.vim'].dir)
+  q
+
+  execute 'cd' g:plugs['goyo.vim'].dir
+  Assert system('git describe --tag') =~ '^1.5.3'
+  Assert len(split(system('git log --oneline'), '\n')) > 1
+  Assert !filereadable('.git/shallow')
+  cd -
+