Reset &rtp before 'do' to invalidate Neovim cache of loaded Lua modules

Neovim 0.5.0 allows lua files to be used in runtime files (such as
plugin, ftdetect, etc.) as well as vimscript files. Indeed, some
plugins have `plugin/*.lua` scripts only, but not `plugin/*.vim`;
such plugins cannot be sourced and work properly if it is lazy-loaded.

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: junegunn

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,37 @@
+<!--
+### Before Submitting
+
+- You checked the [faq](https://github.com/junegunn/vim-plug/wiki/faq) for common problems.
+- Check your [requirements](https://github.com/junegunn/vim-plug/wiki/requirements) are satisfied.
+- You are not going to suggest vim-plug manage itself like Vundle, see #240, #364, #367 ...
+-->
+
+Explain the problem here ...
+
+------------------------------
+
+<!-- Paste your Plug block (from `call plug#begin()` to `call plug#end()`) -->
+```
+
+```
+
+<!-- Paste the contents of `:version` below -->
+```
+
+```
+
+<!-- Check all that apply. -->
+- Type:
+    - [ ] Bug
+    - [ ] Enhancement
+    - [ ] Feature Request
+    - [ ] Question
+- OS:
+    - [ ] All/Other
+    - [ ] Linux
+    - [ ] macOS
+    - [ ] Windows
+- Vim:
+    - [ ] Terminal Vim
+    - [ ] GVim
+    - [ ] Neovim

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+<!-- ## Before Submitting
+
+- You made sure the existing tests/travis build works.
+- You made sure any new features were tested where appropriate.
+- You checked a similar feature wasn't already turned down by searching issues & PRs.
+-->
+
+Describe the details of your PR ...

.github/workflows/test.yml

@@ -0,0 +1,52 @@
+---
+name: Test vim-plug
+
+on:
+  push:
+    branches: [master, devel]
+  pull_request:
+    branches: [master]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        vim:
+          - vim
+          # FIXME: (core dumped) https://github.com/junegunn/vim-plug/runs/4422576984?check_suite_focus=true#step:3:238
+          # - neovim-stable
+          # - neovim-unstable
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Install packages and test
+        env:
+          ENV: ${{ matrix.vim }}
+        run: |
+          export DEPS=~/deps
+          export PATH=~/deps/bin:$PATH
+
+          git config --global user.email "you@example.com"
+          git config --global user.name "Your Name"
+
+          case "$ENV" in
+            vim)
+              sudo apt-get install vim
+              ;;
+            neovim-*)
+              sudo add-apt-repository ppa:neovim-ppa/${ENV/neovim-/}
+              sudo apt-get update
+              sudo apt-get install neovim
+
+              mkdir -p $DEPS/bin
+              echo 'nvim "$@"' > $DEPS/bin/vim
+              chmod +x $DEPS/bin/vim
+              export VADER_OUTPUT_FILE=/dev/stderr
+              ;;
+          esac
+
+          test/run !

.gitignore

@@ -0,0 +1 @@
+doc/tags

.travis.yml

@@ -1,12 +1,71 @@
-language: vim
+language: minimal
+env:
+  global:
+    - DEPS=$HOME/deps
+    - PATH=$DEPS/bin:$PATH
+jobs:
+  include:
+    - env: ENV=vim80-bionic
+      dist: bionic
+      stage: vim8
+    - env: ENV=vim-nightly
+      dist: trusty
+      stage: vim8
+    - env: ENV=neovim-stable
+      dist: bionic
+      addons: {apt: {packages: [neovim], sources: [{sourceline: 'ppa:neovim-ppa/stable'}]}}
+      stage: neovim
+    - env: ENV=neovim-nightly
+      dist: bionic
+      addons: {apt: {packages: [neovim], sources: [{sourceline: 'ppa:neovim-ppa/unstable'}]}}
+      stage: neovim
+    - env: ENV=vim74-trusty-python
+      dist: trusty
+      stage: vim74
+    - env: ENV=vim74-xenial-python3
+      dist: xenial
+      stage: vim74
+    - env: ENV=vim74-trusty-ruby
+      dist: trusty
+      addons: {apt: {packages: [vim-nox]}}
+      stage: vim74
+    - env: ENV=vim74-xenial-ruby
+      dist: xenial
+      addons: {apt: {packages: [vim-nox]}}
+      stage: vim74
+    - env: ENV=osx-highsierra
+      os: osx
+      osx_image: xcode9.4
+      stage: vim8
+install: |
+  git config --global user.email "you@example.com"
+  git config --global user.name "Your Name"
 
-before_script: |
-  hg clone https://code.google.com/p/vim/
+  C_OPTS="--prefix=$DEPS --with-features=huge --disable-gui "
+  case "$ENV" in
+    vim-*)
+      ;;
+    neovim-*)
+      mkdir -p ${DEPS}/bin
+      ln -s /usr/bin/nvim ${DEPS}/bin/vim
+      export VADER_OUTPUT_FILE=/dev/stderr
+      return
+      ;;
+    vim74-* | vim80-*)
+      mkdir -p ${DEPS}/bin
+      ln -s /usr/bin/vim.nox ${DEPS}/bin/vim
+      return
+      ;;
+    *)
+      return
+      ;;
+  esac
+
+  git clone --depth 1 https://github.com/vim/vim
   cd vim
-  ./configure --with-features=huge --enable-rubyinterp
+  export PATH=/usr/bin:$PATH
+  ./configure $C_OPTS
   make
-  sudo make install
+  make install
   cd -
-
-script: |
-  test/run !
+script: test/run !

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Junegunn Choi
+
+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.

README.md

@@ -1,101 +1,264 @@
-![vim-plug](https://raw.github.com/junegunn/vim-plug/master/plug.png)
-![travis-ci](https://travis-ci.org/junegunn/vim-plug.svg?branch=master)
+<div align="center">
+<sup>Special thanks to:</sup>
+<br>
+<br>
+<a href="https://warp.dev/?utm_source=github&utm_medium=referral&utm_campaign=vimplug_20240209">
+  <div>
+    <img src="https://raw.githubusercontent.com/junegunn/i/master/warp.png" width="300" alt="Warp">
+  </div>
+  <b>Warp is a modern, Rust-based terminal with AI built in so you and your team can build great software, faster.</b>
+  <div>
+    <sup>Visit warp.dev to learn more.</sup>
+  </div>
+</a>
+<br>
+<hr>
+</div>
+<br>
 
-A single-file Vim plugin manager.
+<img src="https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.png" height="75" alt="vim-plug">[![build](https://img.shields.io/github/actions/workflow/status/junegunn/vim-plug/test.yml?branch=master)](https://github.com/junegunn/vim-plug/actions/workflows/test.yml?query=branch%3Amaster)
+===
 
-Somewhere between [Pathogen](https://github.com/tpope/vim-pathogen) and
-[Vundle](https://github.com/gmarik/vundle), but with faster parallel installer.
+A minimalist Vim plugin manager.
 
-![](https://raw.github.com/junegunn/i/master/vim-plug/installer.gif)
+<img src="https://raw.githubusercontent.com/junegunn/i/master/vim-plug/installer.gif" height="450">
 
 ### Pros.
 
-- Easier to setup
-- Parallel installation/update (requires
-  [+ruby](http://junegunn.kr/2013/09/installing-vim-with-ruby-support/))
-- Smallest possible feature set
-- Branch/tag support
-- On-demand loading
-- Dependency resolution using `Plugfile` (experimental)
+- Easy to set up: Single file. No boilerplate code required.
+- Easy to use: Concise, intuitive syntax
+- [Super-fast][40/4] parallel installation/update
+  (with any of `+job`, `+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/commit support
+- Post-update hooks
+- Support for externally managed plugins
 
-### Cons.
+[40/4]: https://raw.githubusercontent.com/junegunn/i/master/vim-plug/40-in-4.gif
+[nv]: http://neovim.org/
+[startup-time]: https://github.com/junegunn/vim-startuptime-benchmark#result
 
-- Everything else
+### Installation
+
+[Download plug.vim](https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim)
+and put it in the "autoload" directory.
+
+#### Vim
+
+###### Unix
+
+```sh
+curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
+    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+```
+
+You can automate the process by putting the command in your Vim configuration
+file as suggested [here][auto].
+
+[auto]: https://github.com/junegunn/vim-plug/wiki/tips#automatic-installation
+
+###### Windows (PowerShell)
+
+```powershell
+iwr -useb https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim |`
+    ni $HOME/vimfiles/autoload/plug.vim -Force
+```
+
+#### Neovim
+
+###### Unix, Linux
+
+```sh
+sh -c 'curl -fLo "${XDG_DATA_HOME:-$HOME/.local/share}"/nvim/site/autoload/plug.vim --create-dirs \
+       https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
+```
+
+###### Linux (Flatpak)
+
+```sh
+curl -fLo ~/.var/app/io.neovim.nvim/data/nvim/site/autoload/plug.vim --create-dirs \
+    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+```
+
+###### Windows (PowerShell)
+
+```powershell
+iwr -useb https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim |`
+    ni "$(@($env:XDG_DATA_HOME, $env:LOCALAPPDATA)[$null -eq $env:XDG_DATA_HOME])/nvim-data/site/autoload/plug.vim" -Force
+```
+
+### Getting Help
+
+- See [tutorial] page to learn the basics of vim-plug
+- See [tips] and [FAQ] pages for common problems and questions
+- See [requirements] page for debugging information & tested configurations
+- Create an [issue](https://github.com/junegunn/vim-plug/issues/new)
+
+[tutorial]: https://github.com/junegunn/vim-plug/wiki/tutorial
+[tips]: https://github.com/junegunn/vim-plug/wiki/tips
+[FAQ]: https://github.com/junegunn/vim-plug/wiki/faq
+[requirements]: https://github.com/junegunn/vim-plug/wiki/requirements
 
 ### Usage
 
-[Download plug.vim](https://raw.github.com/junegunn/vim-plug/master/plug.vim)
-and put it in ~/.vim/autoload
+Add a vim-plug section to your `~/.vimrc` (or `stdpath('config') . '/init.vim'` for Neovim)
 
-```sh
-mkdir -p ~/.vim/autoload
-curl -fLo ~/.vim/autoload/plug.vim https://raw.github.com/junegunn/vim-plug/master/plug.vim
-```
+1. Begin the section with `call plug#begin([PLUGIN_DIR])`
+1. List the plugins with `Plug` commands
+1. `call plug#end()` to update `&runtimepath` and initialize plugin system
+    - Automatically executes `filetype plugin indent on` and `syntax enable`.
+      You can revert the settings after the call. e.g. `filetype indent off`, `syntax off`, etc.
 
-Edit your .vimrc
+#### Example
 
 ```vim
-call plug#begin('~/.vim/plugged')
+call plug#begin()
+" The default plugin directory will be as follows:
+"   - Vim (Linux/macOS): '~/.vim/plugged'
+"   - Vim (Windows): '~/vimfiles/plugged'
+"   - Neovim (Linux/macOS/Windows): stdpath('data') . '/plugged'
+" You can specify a custom plugin directory by passing it as the argument
+"   - e.g. `call plug#begin('~/.vim/plugged')`
+"   - Avoid using standard Vim directory names like 'plugin'
 
 " Make sure you use single quotes
-Plug 'junegunn/seoul256.vim'
+
+" Shorthand notation; fetches https://github.com/junegunn/vim-easy-align
 Plug 'junegunn/vim-easy-align'
 
-" On-demand loading
-Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
-Plug 'tpope/vim-fireplace', { 'for': 'clojure' }
-
-" Using git URL
+" Any valid git URL is allowed
 Plug 'https://github.com/junegunn/vim-github-dashboard.git'
 
+" Multiple Plug commands can be written in a single line using | separators
+Plug 'SirVer/ultisnips' | Plug 'honza/vim-snippets'
+
+" On-demand loading
+Plug 'preservim/nerdtree', { 'on': 'NERDTreeToggle' }
+Plug 'tpope/vim-fireplace', { 'for': 'clojure' }
+
+" Using a non-default 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': 'go.weekly.2012-03-13', 'rtp': 'vim' }
+Plug 'nsf/gocode', { 'tag': 'v.20150303', 'rtp': 'vim' }
 
-" Locally-managed plugin
-Plug '~/.fzf'
+" 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'
+
+" Initialize plugin system
+" - Automatically executes `filetype plugin indent on` and `syntax enable`.
 call plug#end()
+" You can revert the settings after the call like so:
+"   filetype indent off   " Disable file-type-specific indentation
+"   syntax off            " Disable syntax highlighting
 ```
 
 Reload .vimrc and `:PlugInstall` to install plugins.
 
+#### Example (Lua configuration for Neovim)
+
+In Neovim, you can write your configuration in a Lua script file named
+`init.lua`. The following code is the Lua script equivalent to the VimScript
+example above.
+
+```lua
+local vim = vim
+local Plug = vim.fn['plug#']
+
+vim.call('plug#begin')
+
+-- 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')
+
+-- Multiple Plug commands can be written in a single line using ; separators
+Plug('SirVer/ultisnips'); Plug('honza/vim-snippets')
+
+-- On-demand loading
+Plug('preservim/nerdtree', { ['on'] = 'NERDTreeToggle' })
+Plug('tpope/vim-fireplace', { ['for'] = 'clojure' })
+
+-- Using a non-default 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')
+
+vim.call('plug#end')
+```
+
+More examples can be found in:
+
+* https://gitlab.com/sultanahamer/dotfiles/-/blob/master/nvim/lua/plugins.lua?ref_type=heads
+
 ### Commands
 
-| Command                           | Description                                                        |
-| --------------------------------- | ------------------------------------------------------------------ |
-| PlugInstall [name ...] [#threads] | Install plugins                                                    |
-| PlugUpdate [name ...] [#threads]  | Install or update plugins                                          |
-| PlugClean[!]                      | Remove unused directories (bang version will clean without prompt) |
-| PlugUpgrade                       | Upgrade vim-plug itself                                            |
-| PlugStatus                        | Check the status of plugins                                        |
-| PlugDiff                          | See the updated changes from the previous PlugUpdate               |
+| Command                             | Description                                                        |
+| ----------------------------------- | ------------------------------------------------------------------ |
+| `PlugInstall [name ...] [#threads]` | Install plugins                                                    |
+| `PlugUpdate [name ...] [#threads]`  | Install or update plugins                                          |
+| `PlugClean[!]`                      | Remove unlisted plugins (bang version will clean without prompt) |
+| `PlugUpgrade`                       | Upgrade vim-plug itself                                            |
+| `PlugStatus`                        | Check the status of plugins                                        |
+| `PlugDiff`                          | Examine changes from the previous update and the pending changes   |
+| `PlugSnapshot[!] [output path]`     | Generate script for restoring the current snapshot of the plugins  |
 
 ### `Plug` options
 
-| Option         | Description                                                          |
-| -------------- | -------------------------------------------------------------------- |
-| `branch`/`tag` | Branch or tag of the repository to use                               |
-| `rtp`          | Subdirectory that contains Vim plugin                                |
-| `dir`          | Custom directory 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 install/update plugin unless explicitly given as the argument |
+| 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        |
 
-### Options for parallel installer
+### Global options
+
+| 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_shallow`    | 1                                 | Use shallow clone                                      |
+| `g:plug_window`     | `vertical topleft new`            | Command to open plug window                            |
+| `g:plug_pwindow`    | `above 12new`                     | Command to open preview window in `PlugDiff`           |
+| `g:plug_url_format` | `https://git::@github.com/%s.git` | `printf` format to build repo URL (Only applies to the subsequent `Plug` commands) |
 
-| Flag             | Default | Description                          |
-| ---------------- | ------- | ------------------------------------ |
-| `g:plug_threads` | 16      | Default number of threads to use     |
-| `g:plug_timeout` | 60      | Time limit of each task in seconds   |
-| `g:plug_retries` | 2       | Number of retries in case of timeout |
 
 ### Keybindings
 
 - `D` - `PlugDiff`
 - `S` - `PlugStatus`
 - `R` - Retry failed update or installation tasks
+- `U` - Update plugins in the selected range
 - `q` - Close the window
+- `:PlugStatus`
+    - `L` - Load plugin
+- `:PlugDiff`
+    - `X` - Revert the update
 
 ### Example: A small [sensible](https://github.com/tpope/vim-sensible) Vim configuration
 
@@ -109,7 +272,7 @@ call plug#end()
 
 ```vim
 " NERD tree will be loaded on the first invocation of NERDTreeToggle command
-Plug 'scrooloose/nerdtree', { 'on': 'NERDTreeToggle' }
+Plug 'preservim/nerdtree', { 'on': 'NERDTreeToggle' }
 
 " Multiple commands
 Plug 'junegunn/vim-github-dashboard', { 'on': ['GHDashboard', 'GHActivity'] }
@@ -117,39 +280,67 @@ Plug 'junegunn/vim-github-dashboard', { 'on': ['GHDashboard', 'GHActivity'] }
 " Loaded when clojure file is opened
 Plug 'tpope/vim-fireplace', { 'for': 'clojure' }
 
+" Multiple file types
+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 lazily loaded on demand
+Plug 'junegunn/goyo.vim', { 'for': 'markdown' }
+autocmd! User goyo.vim echom 'Goyo is now loaded!'
 ```
 
-### Post-installation/update hooks
+The `for` option is generally not needed as most plugins for specific file types
+usually don't have too much code in the `plugin` directory. You might want to
+examine the output of `vim --startuptime` before applying the option.
+
+### Post-update hooks
 
 There are some plugins that require extra steps after installation or update.
-In that case, use `do` option to describe the task to be performed.
+In that case, use the `do` option to describe the task to be performed.
 
 ```vim
-Plug 'Valloric/YouCompleteMe', { 'do': './install.sh' }
+Plug 'Shougo/vimproc.vim', { 'do': 'make' }
+Plug 'ycm-core/YouCompleteMe', { 'do': './install.py' }
+```
+
+If the value starts with `:`, it will be recognized as a Vim command.
+
+```vim
+Plug 'fatih/vim-go', { 'do': ':GoInstallBinaries' }
+```
+
+To call a Vim function, you can pass a lambda expression like so:
+
+```vim
+Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
 ```
 
 If you need more control, you can pass a reference to a Vim function that
-takes a single argument.
+takes a dictionary argument.
 
 ```vim
 function! BuildYCM(info)
-  " info is a dictionary with two fields
-  " - name: name of the plugin
-  " - status: 'installed' or 'updated'
-  if a:info.status == 'installed'
-    !./install.sh
+  " info is a dictionary with 3 fields
+  " - name:   name of the plugin
+  " - status: 'installed', 'updated', or 'unchanged'
+  " - force:  set on PlugInstall! or PlugUpdate!
+  if a:info.status == 'installed' || a:info.force
+    !./install.py
   endif
 endfunction
 
-Plug 'Valloric/YouCompleteMe', { 'do': function('BuildYCM') }
+Plug 'ycm-core/YouCompleteMe', { 'do': function('BuildYCM') }
 ```
 
-Both forms of post-update hook are executed inside the directory of the plugin.
+A post-update hook is executed inside the directory of the plugin and only run
+when the repository has changed, but you can force it to run unconditionally
+with the bang-versions of the commands: `PlugInstall!` and `PlugUpdate!`.
 
-Make sure to escape BARs when you write `do` option inline as they are
-mistakenly recognized as command separator for Plug command.
+Make sure to escape BARs and double-quotes when you write the `do` option
+inline as they are mistakenly recognized as command separator or the start of
+the trailing comment.
 
 ```vim
 Plug 'junegunn/fzf', { 'do': 'yes \| ./install' }
@@ -163,81 +354,30 @@ let g:fzf_install = 'yes | ./install'
 Plug 'junegunn/fzf', { 'do': g:fzf_install }
 ```
 
-### Dependency resolution
+### `PlugInstall!` and `PlugUpdate!`
 
-See [Dependency
-Resolution](https://github.com/junegunn/vim-plug/wiki/Dependency-Resolution).
+The installer takes the following steps when installing/updating a plugin:
+
+1. `git clone` or `git fetch` from its origin
+2. Check out branch, tag, or commit and optionally `git merge` remote branch
+3. If the plugin was updated (or installed for the first time)
+    1. Update submodules
+    2. Execute post-update hooks
+
+The commands with the `!` suffix ensure that all steps are run unconditionally.
 
 ### Articles
 
 - [Writing my own Vim plugin manager](http://junegunn.kr/2013/09/writing-my-own-vim-plugin-manager)
-- [Thoughts on Vim plugin dependency](http://junegunn.kr/2013/09/thoughts-on-vim-plugin-dependency)
 - [Vim plugins and startup time](http://junegunn.kr/2014/07/vim-plugins-and-startup-time)
+- ~~[Thoughts on Vim plugin dependency](http://junegunn.kr/2013/09/thoughts-on-vim-plugin-dependency)~~
+    - *Support for Plugfile has been removed since 0.5.0*
 
-### FAQ/Troubleshooting
+### Collaborators
 
-#### Plugins are not installed/updated in parallel
-
-Your Vim does not support Ruby interface. `:echo has('ruby')` should print 1.
-In order to setup Vim with Ruby support, you may refer to [this
-article](http://junegunn.kr/2013/09/installing-vim-with-ruby-support).
-
-#### *Vim: Caught deadly signal SEGV*
-
-If your Vim crashes with the above message, first check if its Ruby interface is
-working correctly with the following command:
-
-```vim
-:ruby puts RUBY_VERSION
-```
-
-If Vim crashes even with this command, it is likely that Ruby interface is
-broken, and you have to rebuild Vim with a working version of Ruby.
-(`brew remove vim && brew install vim` or `./configure && make ...`)
-
-If you're on OS X, one possibility is that you had installed Vim with
-[Homebrew](http://brew.sh/) while using a Ruby installed with
-[RVM](http://rvm.io/) or [rbenv](https://github.com/sstephenson/rbenv) and later
-removed that version of Ruby.
-
-[Please let me know](https://github.com/junegunn/vim-plug/issues) if you can't
-resolve the problem. In the meantime, you can set `g:plug_threads` to 1, so that
-Ruby installer is not used at all.
-
-#### Errors on fish shell
-
-If vim-plug doesn't work correctly on fish shell, you might need to add `set
-shell=/bin/sh` to your .vimrc.
-
-Refer to the following links for the details:
-- http://badsimplicity.com/vim-fish-e484-cant-open-file-tmpvrdnvqe0-error/
-- https://github.com/junegunn/vim-plug/issues/12
-
-#### Freezing plugin version with commit hash
-
-vim-plug does not allow you to freeze the version of a plugin with its commit
-hash. This is by design. I don't believe a user of a plugin should be looking
-at its individual commits. Instead, one should be choosing the right version
-using release tags or versioned branches (e.g. 1.2.3, stable, devel, etc.)
-
-```vim
-Plug 'junegunn/vim-easy-align', '2.9.2'
-```
-
-If the repository doesn't come with such tags or branches, you should think of
-it as "unstable" or "in development", and always use its latest revision.
-
-If you really must choose a certain untagged revision, consider forking the
-repository.
-
-#### Migrating from other plugin managers
-
-vim-plug does not require any extra statement other than `plug#begin()` and
-`plug#end()`. You can remove `filetype off`, `filetype plugin indent on` and
-`syntax on` from your .vimrc as they are automatically handled by
-`plug#end()`.
+- [Jan Edmund Lazo](https://github.com/janlazo) - Windows support
+- [Jeremy Pallats](https://github.com/starcraftman) - Python installer
 
 ### License
 
 MIT
-

doc/plug.txt

@@ -0,0 +1,386 @@
+plug.txt	plug	Last change: February 23 2024
+PLUG - TABLE OF CONTENTS                                         *plug* *plug-toc*
+==============================================================================
+
+  vim-plug
+    Pros.
+    Installation
+      Vim
+        Unix
+        Windows (PowerShell)
+      Neovim
+        Unix
+        Windows (PowerShell)
+    Getting Help
+    Usage
+      Example
+    Commands
+    Plug options
+    Global options
+    Keybindings
+    Example: A small sensible Vim configuration
+    On-demand loading of plugins
+    Post-update hooks
+    PlugInstall! and PlugUpdate!
+    Articles
+    Collaborators
+    License
+
+VIM-PLUG                                                              *vim-plug*
+==============================================================================
+
+A minimalist Vim plugin manager.
+
+https://raw.githubusercontent.com/junegunn/i/master/vim-plug/installer.gif
+
+
+< Pros. >_____________________________________________________________________~
+                                                                     *plug-pros*
+
+ - Easy to set up: Single file. No boilerplate code required.
+ - Easy to use: Concise, intuitive syntax
+ - {Super-fast}{1} parallel installation/update (with any of `+job`, `+python`,
+   `+python3`, `+ruby`, or {Neovim}{2})
+ - Creates shallow clones to minimize disk space usage and download time
+ - On-demand loading for {faster startup time}{3}
+ - Can review and rollback updates
+ - Branch/tag/commit support
+ - Post-update hooks
+ - Support for externally managed plugins
+
+  {1} https://raw.githubusercontent.com/junegunn/i/master/vim-plug/40-in-4.gif
+  {2} http://neovim.org/
+  {3} https://github.com/junegunn/vim-startuptime-benchmark#result
+
+
+< Installation >______________________________________________________________~
+                                                             *plug-installation*
+
+{Download plug.vim}{4} and put it in the "autoload" directory.
+
+       {4} https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+
+
+Vim~
+                                                                      *plug-vim*
+
+
+>> Unix~
+>
+    curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
+        https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
+<
+You can automate the process by putting the command in your Vim configuration
+file as suggested {here}{5}.
+
+     {5} https://github.com/junegunn/vim-plug/wiki/tips#automatic-installation
+
+
+>> Windows (PowerShell)~
+>
+    iwr -useb https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim |`
+        ni $HOME/vimfiles/autoload/plug.vim -Force
+<
+
+Neovim~
+                                                                   *plug-neovim*
+
+
+>> Unix~
+>
+    sh -c 'curl -fLo "${XDG_DATA_HOME:-$HOME/.local/share}"/nvim/site/autoload/plug.vim --create-dirs \
+           https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
+<
+
+>> Windows (PowerShell)~
+>
+    iwr -useb https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim |`
+        ni "$(@($env:XDG_DATA_HOME, $env:LOCALAPPDATA)[$null -eq $env:XDG_DATA_HOME])/nvim-data/site/autoload/plug.vim" -Force
+<
+
+< Getting Help >______________________________________________________________~
+                                                             *plug-getting-help*
+
+ - See {tutorial}{6} page to learn the basics of vim-plug
+ - See {tips}{7} and {FAQ}{8} pages for common problems and questions
+ - See {requirements}{9} page for debugging information & tested configurations
+ - Create an {issue}{10}
+
+                    {6} https://github.com/junegunn/vim-plug/wiki/tutorial
+                    {7} https://github.com/junegunn/vim-plug/wiki/tips
+                    {8} https://github.com/junegunn/vim-plug/wiki/faq
+                    {9} https://github.com/junegunn/vim-plug/wiki/requirements
+                    {10} https://github.com/junegunn/vim-plug/issues/new
+
+
+< Usage >_____________________________________________________________________~
+                                                                    *plug-usage*
+
+Add a vim-plug section to your `~/.vimrc` (or `stdpath('config') . '/init.vim'` for
+Neovim)
+
+                                                           *plug#begin* *plug#end*
+
+ 1. Begin the section with `call plug#begin([PLUGIN_DIR])`
+ 2. List the plugins with `Plug` commands
+ 3. `call plug#end()` to update 'runtimepath' and initialize plugin system
+   - Automatically executes `filetype plugin indent on` and `syntax enable`.
+     You can revert the settings after the call. e.g. `filetype indent off`,
+     `syntax off`, etc.
+
+
+Example~
+                                                                  *plug-example*
+>
+    call plug#begin()
+    " The default plugin directory will be as follows:
+    "   - Vim (Linux/macOS): '~/.vim/plugged'
+    "   - Vim (Windows): '~/vimfiles/plugged'
+    "   - Neovim (Linux/macOS/Windows): stdpath('data') . '/plugged'
+    " You can specify a custom plugin directory by passing it as the argument
+    "   - e.g. `call plug#begin('~/.vim/plugged')`
+    "   - Avoid using standard Vim directory names like 'plugin'
+
+    " 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'
+
+    " Multiple Plug commands can be written in a single line using | separators
+    Plug 'SirVer/ultisnips' | Plug 'honza/vim-snippets'
+
+    " On-demand loading
+    Plug 'preservim/nerdtree', { 'on': 'NERDTreeToggle' }
+    Plug 'tpope/vim-fireplace', { 'for': 'clojure' }
+
+    " Using a non-default 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'
+
+    " Initialize plugin system
+    " - Automatically executes `filetype plugin indent on` and `syntax enable`.
+    call plug#end()
+    " You can revert the settings after the call like so:
+    "   filetype indent off   " Disable file-type-specific indentation
+    "   syntax off            " Disable syntax highlighting
+<
+                                                                  *:PlugInstall*
+
+Reload .vimrc and `:PlugInstall` to install plugins.
+
+
+< Commands >__________________________________________________________________~
+                                                                 *plug-commands*
+
+ ------------------------------------+-------------------------------------------------------------------
+ Command                             | Description                                                       ~
+ ------------------------------------+-------------------------------------------------------------------
+  `PlugInstall [name ...] [#threads]`  | Install plugins
+  `PlugUpdate [name ...] [#threads]`   | Install or update plugins
+  `PlugClean[!]`                       | Remove unlisted plugins (bang version will clean without prompt)
+  `PlugUpgrade`                        | Upgrade vim-plug itself
+  `PlugStatus`                         | Check the status of plugins
+  `PlugDiff`                           | Examine changes from the previous update and the pending changes
+  `PlugSnapshot[!] [output path]`      | Generate script for restoring the current snapshot of the plugins
+ ------------------------------------+-------------------------------------------------------------------
+
+
+< Plug options >______________________________________________________________~
+                                                                  *plug-options*
+                                                                         *:Plug*
+
+ ------------------------+-----------------------------------------------
+ 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
+ ------------------------+-----------------------------------------------
+
+
+< Global options >____________________________________________________________~
+                                                           *plug-global-options*
+
+     *g:plug_threads* *g:plug_timeout* *g:plug_retries* *g:plug_shallow* *g:plug_window*
+                                              *g:plug_pwindow* *g:plug_url_format*
+
+ --------------------+-----------------------------------+-----------------------------------------------------------------------------------
+ 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_shallow`     | 1                                 | Use shallow clone
+  `g:plug_window`      |  `vertical topleft new`             | Command to open plug window
+  `g:plug_pwindow`     |  `above 12new`                      | Command to open preview window in  `PlugDiff`
+  `g:plug_url_format`  |  `https://git::@github.com/%s.git`  |  `printf`  format to build repo URL (Only applies to the subsequent  `Plug`  commands)
+ --------------------+-----------------------------------+-----------------------------------------------------------------------------------
+
+
+< Keybindings >_______________________________________________________________~
+                                                              *plug-keybindings*
+
+                                                         *:PlugStatus* *:PlugDiff*
+
+ - `D` - `PlugDiff`
+ - `S` - `PlugStatus`
+ - `R` - Retry failed update or installation tasks
+ - `U` - Update plugins in the selected range
+ - `q` - Close the window
+ - `:PlugStatus`
+   - `L` - Load plugin
+ - `:PlugDiff`
+   - `X` - Revert the update
+
+
+< Example: A small sensible Vim configuration >_______________________________~
+                               *plug-example-a-small-sensible-vim-configuration*
+>
+    call plug#begin()
+    Plug 'tpope/vim-sensible'
+    call plug#end()
+<
+
+< On-demand loading of plugins >______________________________________________~
+                                             *plug-on-demand-loading-of-plugins*
+>
+    " NERD tree will be loaded on the first invocation of NERDTreeToggle command
+    Plug 'preservim/nerdtree', { 'on': 'NERDTreeToggle' }
+
+    " Multiple commands
+    Plug 'junegunn/vim-github-dashboard', { 'on': ['GHDashboard', 'GHActivity'] }
+
+    " Loaded when clojure file is opened
+    Plug 'tpope/vim-fireplace', { 'for': 'clojure' }
+
+    " Multiple file types
+    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 lazily loaded on demand
+    Plug 'junegunn/goyo.vim', { 'for': 'markdown' }
+    autocmd! User goyo.vim echom 'Goyo is now loaded!'
+<
+The `for` option is generally not needed as most plugins for specific file
+types usually don't have too much code in the `plugin` directory. You might
+want to examine the output of `vim --startuptime` before applying the option.
+
+
+< Post-update hooks >_________________________________________________________~
+                                                        *plug-post-update-hooks*
+
+There are some plugins that require extra steps after installation or update.
+In that case, use the `do` option to describe the task to be performed.
+>
+    Plug 'Shougo/vimproc.vim', { 'do': 'make' }
+    Plug 'ycm-core/YouCompleteMe', { 'do': './install.py' }
+<
+If the value starts with `:`, it will be recognized as a Vim command.
+>
+    Plug 'fatih/vim-go', { 'do': ':GoInstallBinaries' }
+<
+To call a Vim function, you can pass a lambda expression like so:
+>
+    Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
+<
+If you need more control, you can pass a reference to a Vim function that
+takes a dictionary argument.
+>
+    function! BuildYCM(info)
+      " info is a dictionary with 3 fields
+      " - name:   name of the plugin
+      " - status: 'installed', 'updated', or 'unchanged'
+      " - force:  set on PlugInstall! or PlugUpdate!
+      if a:info.status == 'installed' || a:info.force
+        !./install.py
+      endif
+    endfunction
+
+    Plug 'ycm-core/YouCompleteMe', { 'do': function('BuildYCM') }
+<
+A post-update hook is executed inside the directory of the plugin and only run
+when the repository has changed, but you can force it to run unconditionally
+with the bang-versions of the commands: `PlugInstall!` and `PlugUpdate!`.
+
+Make sure to escape BARs and double-quotes when you write the `do` option
+inline as they are mistakenly recognized as command separator or the start of
+the trailing comment.
+>
+    Plug 'junegunn/fzf', { 'do': 'yes \| ./install' }
+<
+But you can avoid the escaping if you extract the inline specification using a
+variable (or any Vimscript expression) as follows:
+
+                                                                 *g:fzf_install*
+>
+    let g:fzf_install = 'yes | ./install'
+    Plug 'junegunn/fzf', { 'do': g:fzf_install }
+<
+
+< PlugInstall! and PlugUpdate! >______________________________________________~
+                                                    *pluginstall-and-plugupdate*
+
+The installer takes the following steps when installing/updating a plugin:
+
+ 1. `git clone` or `git fetch` from its origin
+ 2. Check out branch, tag, or commit and optionally `git merge` remote branch
+ 3. If the plugin was updated (or installed for the first time)
+   1. Update submodules
+   2. Execute post-update hooks
+
+The commands with the `!` suffix ensure that all steps are run
+unconditionally.
+
+
+< Articles >__________________________________________________________________~
+                                                                 *plug-articles*
+
+ - {Writing my own Vim plugin manager}{11}
+ - {Vim plugins and startup time}{12}
+ - ~~{Thoughts on Vim plugin dependency}{13}~~
+   - Support for Plugfile has been removed since 0.5.0
+
+             {11} http://junegunn.kr/2013/09/writing-my-own-vim-plugin-manager
+             {12} http://junegunn.kr/2014/07/vim-plugins-and-startup-time
+             {13} http://junegunn.kr/2013/09/thoughts-on-vim-plugin-dependency
+
+
+< Collaborators >_____________________________________________________________~
+                                                            *plug-collaborators*
+
+ - {Jan Edmund Lazo}{14} - Windows support
+ - {Jeremy Pallats}{15} - Python installer
+
+                                          {14} https://github.com/janlazo
+                                          {15} https://github.com/starcraftman
+
+
+< License >___________________________________________________________________~
+                                                                  *plug-license*
+
+MIT
+
+
+==============================================================================
+vim:tw=78:sw=2:ts=2:ft=help:norl:nowrap:

test/functional.vader

@@ -0,0 +1,41 @@
+Execute (plug#shellescape() works without optional arguments):
+  if has('unix')
+    AssertEqual "''", plug#shellescape("")
+    AssertEqual "'foo'\\'''", plug#shellescape("foo'")
+  endif
+
+Execute (plug#shellescape() ignores invalid optional argument):
+  if has('unix')
+    AssertEqual "''", plug#shellescape("", '')
+    AssertEqual "'foo'\\'''", plug#shellescape("foo'", [])
+  endif
+
+Execute (plug#shellescape() depends on the shell):
+  AssertEqual "'foo'\\'''", plug#shellescape("foo'", {'shell': 'sh'})
+  AssertEqual '^"foo''^"', plug#shellescape("foo'", {'shell': 'cmd.exe'})
+  AssertEqual "'foo'''", plug#shellescape("foo'", {'shell': 'powershell'})
+  AssertEqual "'foo'''", plug#shellescape("foo'", {'shell': 'powershell.exe'})
+  AssertEqual "'foo'''", plug#shellescape("foo'", {'shell': 'pwsh'})
+
+Execute (plug#shellescape() supports non-trivial cmd.exe escaping):
+  " batchfile
+  AssertEqual '^"^^%%PATH^^%%^"', plug#shellescape("^%PATH^%", {
+  \ 'shell': 'cmd.exe',
+  \ })
+  AssertEqual '^"^^%%PATH^^%%^"', plug#shellescape("^%PATH^%", {
+  \ 'shell': 'cmd.exe',
+  \ 'script': 1,
+  \ })
+  " command prompt
+  AssertEqual '^"^^^%PATH^^^%^"', plug#shellescape("^%PATH^%", {
+  \ 'shell': 'cmd.exe',
+  \ 'script': 0,
+  \ }),
+
+Execute (plug#shellescape() supports non-trivial powershell.exe escaping):
+  AssertEqual '''\"Foo\\''''\\Bar\"''', plug#shellescape('"Foo\''\Bar"', {
+  \ 'shell': 'powershell',
+  \ }),
+  AssertEqual '''\"Foo\\''''\\Bar\"''', plug#shellescape('"Foo\''\Bar"', {
+  \ 'shell': 'powershell.exe',
+  \ }),

test/regressions.vader

@@ -0,0 +1,375 @@
+**********************************************************************
+Execute (#112 On-demand loading should not suppress messages from ftplugin):
+  call ResetPlug()
+  call plug#begin('$PLUG_FIXTURES')
+  Plug '$PLUG_FIXTURES/ftplugin-msg', { 'for': 'c' }
+  call plug#end()
+
+  redir => out
+  tabnew a.c
+  redir END
+  Assert stridx(out, 'ftplugin-c') >= 0, 'Unexpected output (1): '.out
+
+* The same applies to plug#load())
+  call ResetPlug()
+  redir => out
+  call plug#load('ftplugin-msg')
+  redir END
+  Assert stridx(out, 'ftplugin-c') >= 0, 'Unexpected output (2): '.out
+  q
+
+
+**********************************************************************
+Execute (#114 Should not contain empty path in &rtp):
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  call plug#end()
+
+  Log &rtp
+  Assert &rtp !~ ',,', 'Commas'
+  Assert &rtp !~ '^,', 'Comma prefix'
+  Assert &rtp !~ ',$', 'Comma suffix'
+
+**********************************************************************
+Execute (#130 Proper cleanup of on-demand loading triggers):
+  augroup PlugLOD
+    autocmd!
+  augroup END
+
+  " Cleared on command
+  call ReloadPlug()
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  Plug 'junegunn/vim-emoji', { 'on':  ['EmojiCommand', 'EmojiCommand2', '<Plug>(EmojiMapping)'] }
+  call plug#end()
+  PlugInstall | q
+  call mkdir(g:plugs['vim-emoji'].dir.'/after/plugin', 'p')
+
+  Assert exists(':EmojiCommand'), 'EmojiCommand not defined'
+  Assert exists(':EmojiCommand2'), 'EmojiCommand2 not defined'
+  Assert !empty(mapcheck('<Plug>(EmojiMapping)')), '<Plug>(EmojiMapping) not defined'
+
+  silent! EmojiCommand
+
+  Assert !exists(':EmojiCommand'), 'EmojiCommand defined'
+  Assert !exists(':EmojiCommand2'), 'EmojiCommand2 defined'
+  Assert empty(mapcheck('<Plug>(EmojiMapping)')), '<Plug>(EmojiMapping) defined'
+
+  " Cleared on FileType
+  call ReloadPlug()
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  Plug 'junegunn/vim-emoji', { 'on': ['EmojiCommandExtra', '<Plug>(EmojiMappingExtra)'], 'for': ['emoji'] }
+  call plug#end()
+
+  Assert exists(':EmojiCommandExtra'), 'EmojiCommandExtra not defined'
+  Assert !empty(mapcheck('<Plug>(EmojiMappingExtra)')), '<Plug>(EmojiMappingExtra) not defined'
+
+  setf emoji
+
+  Assert !exists(':EmojiCommandExtra'), 'EmojiCommandExtra defined'
+  Assert empty(mapcheck('<Plug>(EmojiMappingExtra)')), '<Plug>(EmojiMappingExtra) defined'
+
+**********************************************************************
+Execute (#131 Syntax error):
+  call plug#begin('/proc/no-permission')
+  Plug 'junegunn/vim-emoji'
+  call plug#end()
+
+  redir => out
+  silent PlugInstall
+  redir END
+  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('/tmp/vim-plug-test/plugged')
+  call plug#end()
+  PlugClean!
+
+  " Install master branch
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  Plug expand('file:////tmp/vim-plug-test/new-branch')
+  call plug#end()
+  PlugUpdate
+
+  unlet! g:foo g:bar g:baz
+  call ResetPlug()
+  call plug#load('new-branch')
+  Assert exists('g:foo'),  'g:foo should be found (1)'
+  Assert !exists('g:bar'), 'g:bar should not be found (1)'
+  Assert !exists('g:baz'), 'g:baz should not be found (1)'
+
+  " Create a new branch on origin
+  call system('cd /tmp/vim-plug-test/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('/tmp/vim-plug-test/plugged')
+  Plug 'junegunn/seoul256.vim'
+  Plug expand('file:////tmp/vim-plug-test/new-branch'), { 'branch': 'new' }
+  call plug#end()
+  PlugUpdate
+  silent %y
+  Log @"
+  Assert @" !~? 'error', 'Should be able to use new remote branch: ' . @"
+
+  unlet! g:foo g:bar g:baz
+  call ResetPlug()
+  call plug#load('new-branch')
+  Assert exists('g:foo'),  'g:foo should be found (2)'
+  Assert exists('g:bar'),  'g:bar should be found (2)'
+  Assert !exists('g:baz'), 'g:baz should not be found (2)'
+
+  call PlugStatusSorted()
+
+Expect:
+  - new-branch: OK
+  - seoul256.vim: OK
+  Finished. 0 error(s).
+  [==]
+
+Execute (#139-2 Using yet another new remote branch):
+  " Create another branch on origin
+  call system('cd /tmp/vim-plug-test/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('/tmp/vim-plug-test/plugged')
+  Plug expand('file:////tmp/vim-plug-test/new-branch'), { 'branch': 'brand-new' }
+  call plug#end()
+  PlugUpdate
+  silent %y
+  Log @"
+  Assert @" !~? 'error', 'Should be able to use new remote branch: ' . @"
+
+  unlet! g:foo g:bar g:baz
+  call ResetPlug()
+  call plug#load('new-branch')
+  Assert exists('g:foo'),  'g:foo should be found'
+  Assert !exists('g:bar'), 'g:bar should not be found'
+  Assert exists('g:baz'),  'g:baz should be found'
+
+  call PlugStatusSorted()
+
+Expect:
+  - new-branch: OK
+  Finished. 0 error(s).
+  [=]
+
+Execute (#139-3 Should fail when not possible to fast-forward):
+  " Commit on cloned repo
+  call system('cd /tmp/vim-plug-test/plugged/new-branch && git checkout master &&'
+      \. 'touch foobar && git add foobar && git commit -m foobar')
+
+  " Different commit on remote
+  call system('cd /tmp/vim-plug-test/new-branch && git checkout master &&'
+      \. 'touch foobaz && git add foobaz && git commit -m foobaz')
+
+  for multi in [0, 1]
+    call plug#begin('/tmp/vim-plug-test/plugged')
+    if multi
+      Plug 'junegunn/seoul256.vim'
+    endif
+    Plug expand('file:////tmp/vim-plug-test/new-branch')
+    call plug#end()
+    PlugUpdate
+    silent %y
+    Assert @" =~ 'Not possible to fast-forward', @"
+  endfor
+  q
+
+**********************************************************************
+Execute (#145: Merging on-demand loading triggers - cmd):
+  unlet! g:xxx g:yyy
+  call plug#begin()
+  Plug '$PLUG_FIXTURES/xxx', { 'on': 'XXX' }
+  Plug '$PLUG_FIXTURES/yyy', { 'on': ['XXX', 'YYY'] }
+  call plug#end()
+
+  silent! XXX
+
+  Assert exists('g:xxx'), 'xxx is not loaded'
+  Assert exists('g:yyy'), 'yyy is not loaded'
+  Assert !exists(':YYY')
+
+Execute (#145: Merging on-demand loading triggers - map):
+  unlet! g:xxx g:yyy
+
+  call ReloadPlug()
+  call plug#begin()
+  Plug '$PLUG_FIXTURES/xxx', { 'on': '<Plug>(xxx)' }
+  Plug '$PLUG_FIXTURES/yyy', { 'on': ['<Plug>(xxx)' ,'<Plug>(yyy)' ] }
+  call plug#end()
+
+  Assert !empty(mapcheck("<Plug>(xxx)"))
+  Assert !empty(mapcheck("<Plug>(yyy)"))
+
+# FIXME feedkeys() cannot be tested with Vader
+  call plug#load('xxx', 'yyy')
+  Assert empty(mapcheck("<Plug>(xxx)"))
+  Assert empty(mapcheck("<Plug>(yyy)"))
+
+**********************************************************************
+Execute (#159: shell=/bin/tcsh):
+  let org = &shell
+  try
+    set shell=/bin/tcsh
+    call plug#begin('/tmp/vim-plug-test/plugged')
+    Plug 'junegunn/seoul256.vim'
+    call plug#end()
+
+    PlugStatus
+    Log getline(1, '$')
+    q
+    AssertEqual '/bin/tcsh', &shell
+  finally
+    let &shell = org
+  endtry
+
+**********************************************************************
+Execute (#154: Spaces in &rtp should not be escaped):
+  call plug#begin('/tmp/vim-plug-test/plug it')
+  Plug 'foo/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/vim-plug-test/plugged')
+  Plug 'foo/plugin1'
+    \| Plug 'foo/plugin0'
+
+  Plug 'foo/plugin2'
+    \| Plug 'foo/plugin0'
+    \| Plug 'foo/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/vim-plug-test/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/vim-plug-test/plugged')
+  Plug 'junegunn/vim-easy-align', { 'on': 'EasyAlign' }
+  call plug#end()
+  Assert &rtp =~ '/vim-easy-align', 'Plugin should still be in &rtp'
+
+**********************************************************************
+Execute (#350: Ruby installer failed to unshallow tagged plugin on update):
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  call plug#end()
+  PlugClean!
+
+  " Shallow clone. We should have at least 2 plugins to enable parallel installer.
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  Plug 'junegunn/vim-easy-align'
+  Plug 'junegunn/seoul256.vim'
+  call plug#end()
+  PlugUpdate
+  Assert filereadable(g:plugs['vim-easy-align'].dir.'/.git/shallow')
+
+  " Now unshallowed
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  Plug 'junegunn/vim-easy-align', { 'tag': '2.9.0' }
+  Plug 'junegunn/seoul256.vim'
+  call plug#end()
+  PlugUpdate
+  Assert !filereadable(g:plugs['vim-easy-align'].dir.'/.git/shallow')
+  q
+
+**********************************************************************
+Execute (#474: Load ftdetect files in filetypedetect augroup):
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  Plug 'junegunn/rust.vim', { 'for': 'rust', 'commit': '115d321d383eb96d438466c56cc871fcc1bd0faa' }
+  call plug#end()
+  PlugInstall!
+  q
+
+  tabnew /tmp/vim-plug-test/any.rs
+  AssertEqual 'rust', &filetype
+  Log &filetype
+  filetype detect
+  AssertEqual 'rust', &filetype
+  Log &filetype
+  bd
+
+**********************************************************************
+Execute (#489/#587 On-demand loading with 'on' option should trigger BufRead autocmd w/o nomodeline):
+  call plug#begin('$PLUG_FIXTURES')
+  Plug 'foo/ftplugin-msg', { 'on': 'XXX' }
+  call plug#end()
+
+  tabnew a.java
+  call setline(1, '// vim: set filetype=lava:')
+  redir => out
+  silent! XXX
+  redir END
+  Assert stridx(out, 'ftplugin-java') >= 0
+  AssertEqual 'lava', &filetype
+  q!
+
+**********************************************************************
+Execute (Cursor moved to another window during post-update hook):
+  function! DoSplit(...)
+    new
+    call setline(1, 'empty')
+  endfunction
+  call plug#begin('/tmp/vim-plug-test/plugged')
+  Plug 'junegunn/rust.vim', { 'do': function('DoSplit') }
+  call plug#end()
+  PlugInstall!
+  AssertEqual 1, line('$')
+  AssertEqual 'empty', getline(1)
+  q!
+  q
+
+**********************************************************************
+Execute (#593 Add plugin to &rtp before running post-update hook with : prefix):
+  call ReloadPlug()
+  call plug#begin()
+  Plug 'junegunn/vim-pseudocl', { 'on': 'XXX', 'do': ':let g:bar = pseudocl#complete#extract_words(''a b'')' }
+  call plug#end()
+  PlugInstall!
+  AssertEqual ['a', 'b'], g:bar
+
+**********************************************************************
+Execute (#602 Confusion with branch name and path name):
+  call plug#begin()
+  Plug expand('file:////tmp/vim-plug-test/new-branch'), { 'branch': 'plugin' }
+  call plug#end()
+  PlugUpdate
+  call PlugStatusSorted()
+
+Expect:
+  - new-branch: OK
+  Finished. 0 error(s).
+  [=]
+
+**********************************************************************
+Execute (PlugStatus showed error with wildcard tag):
+  call plug#begin()
+  Plug 'junegunn/vim-easy-align', { 'tag': '*' }
+  call plug#end()
+  PlugUpdate
+  call PlugStatusSorted()
+
+Expect:
+  - vim-easy-align: OK
+  Finished. 0 error(s).
+  [=]

test/run

@@ -1,28 +1,137 @@
 #!/bin/bash
 
-cd $(dirname $BASH_SOURCE)
-cd ..
-PLUG_SRC=$(pwd)/plug.vim
-cd - > /dev/null
+# Privileged mode, ignores $CDPATH etc.
+set -p
+set -eu
 
-if [ ! -d vader.vim ]; then
-  git clone https://github.com/junegunn/vader.vim.git
-fi
+cd "$(dirname "${BASH_SOURCE[0]}")"
 
-rm -rf fzf
-if [ ! -d fzf-staged ]; then
-  git clone https://github.com/junegunn/fzf.git fzf-staged
-fi
+export BASE="$PWD"
+export PLUG_SRC="$PWD/../plug.vim"
+export PLUG_FIXTURES="$PWD/fixtures"
+mkdir -p "$PLUG_FIXTURES"
+export TEMP=/tmp/vim-plug-test
+rm -rf "$TEMP"
+mkdir -p "$TEMP"
 
-cat > /tmp/mini-vimrc << VIMRC
-set rtp+=vader.vim
-source $PLUG_SRC
+cat > $TEMP/mini-vimrc << VIMRC
+set rtp+=$TEMP/junegunn/vader.vim
+set shell=/bin/bash
 VIMRC
 
-if [ "$1" = '!' ]; then
-  /usr/local/bin/vim -Nu /tmp/mini-vimrc -c 'Vader! workflow.vader' > /dev/null &&
-  /usr/local/bin/vim -Nu /tmp/mini-vimrc -c 'let g:plug_threads = 1 | Vader! workflow.vader' > /dev/null
-else
-  /usr/local/bin/vim -Nu /tmp/mini-vimrc -c 'Vader workflow.vader'
-fi
+clone() {
+  if [ ! -d "$2" ]; then
+    git clone "$1" "$2"
+  fi
+}
 
+clone_repos() (
+  cd $TEMP
+  mkdir -p junegunn vim-scripts jg
+  for repo in vader.vim goyo.vim rust.vim seoul256.vim vim-easy-align vim-fnr \
+              vim-oblique vim-pseudocl vim-redis vim-emoji; do
+    clone https://github.com/junegunn/${repo}.git junegunn/$repo &
+  done
+  clone https://github.com/vim-scripts/beauty256.git vim-scripts/beauty256 &
+  clone https://github.com/junegunn/fzf.git fzf &
+  clone https://github.com/yous/subsubmodule.git yous/subsubmodule && \
+    (cd yous/subsubmodule && git submodule update --init --recursive &) &
+  wait
+
+  clone junegunn/vim-emoji jg/vim-emoji
+  cd junegunn/seoul256.vim && git checkout no-t_co && git checkout master
+)
+
+make_dirs() (
+  rm -rf "$PLUG_FIXTURES/$1"
+  mkdir -p "$PLUG_FIXTURES/$1"
+  cd "$PLUG_FIXTURES/$1"
+  mkdir -p autoload colors ftdetect ftplugin indent plugin syntax
+  for d in *; do
+    [ -d "$d" ] || continue
+    cat > "$d/xxx.vim" << EOF
+    " echom expand('<sfile>')
+    let g:total_order = get(g:, 'total_order', [])
+    let g:$2 = get(g:, '$2', [])
+    let s:name = join(filter(['$2', '${1:4}', '$d'], '!empty(v:val)'), '/')
+    call add(g:$2, s:name)
+    call add(g:total_order, s:name)
+EOF
+  done
+)
+
+gitinit() (
+  cd "$PLUG_FIXTURES/$1"
+  git init -b master
+  git commit -m 'commit' --allow-empty
+)
+
+prepare() {
+  make_dirs xxx/ xxx
+  make_dirs xxx/after xxx
+  mkdir -p "$PLUG_FIXTURES/xxx/doc"
+  cat > "$PLUG_FIXTURES/xxx/doc/xxx.txt" << DOC
+hello *xxx*
+DOC
+  gitinit xxx
+
+  make_dirs yyy/ yyy
+  make_dirs yyy/after yyy
+  mkdir -p "$PLUG_FIXTURES/yyy/rtp/doc"
+  cat > "$PLUG_FIXTURES/yyy/rtp/doc/yyy.txt" << DOC
+hello *yyy*
+DOC
+  gitinit yyy
+
+  make_dirs z1/ z1
+  make_dirs z2/ z2
+
+  rm -rf "$PLUG_FIXTURES/ftplugin-msg"
+  mkdir -p "$PLUG_FIXTURES"/ftplugin-msg/{plugin,ftplugin}
+  echo "echomsg 'ftplugin-c'" > "$PLUG_FIXTURES/ftplugin-msg/ftplugin/c.vim"
+  echo "echomsg 'ftplugin-java'" > "$PLUG_FIXTURES/ftplugin-msg/ftplugin/java.vim"
+
+  chmod +w "$PLUG_FIXTURES/cant-delete/autoload" || rm -rf "$PLUG_FIXTURES/cant-delete"
+  mkdir -p "$PLUG_FIXTURES/cant-delete/autoload"
+  touch "$PLUG_FIXTURES/cant-delete/autoload/cant-delete.vim"
+  chmod -w "$PLUG_FIXTURES/cant-delete/autoload"
+
+  rm -rf $TEMP/new-branch
+  cd $TEMP
+  git init new-branch -b master
+  cd new-branch
+  mkdir plugin
+  echo 'let g:foo = 1' > plugin/foo.vim
+  git add plugin/foo.vim
+  git commit -m initial
+  git checkout -b plugin
+  git checkout master
+
+  cd "$BASE"
+}
+
+select_vim() {
+  local vim=/usr/bin/vim
+  if [ -n "${DEPS:-}" ] && [ -e "${DEPS}/bin/vim" ]; then
+    vim="${DEPS}/bin/vim"
+  elif [ -e "/usr/local/bin/vim" ]; then
+    vim=/usr/local/bin/vim
+  fi
+  echo $vim
+}
+
+clone_repos
+prepare
+
+git --version
+vim=$(select_vim)
+echo "Selected Vim: $vim"
+if [ "${1:-}" = '!' ]; then
+  FAIL=0
+  $vim -Nu $TEMP/mini-vimrc -c 'Vader! test.vader' > /dev/null || FAIL=1
+  prepare
+  $vim -Nu $TEMP/mini-vimrc -c 'let g:plug_threads = 1 | Vader! test.vader' > /dev/null || FAIL=1
+  test $FAIL -eq 0
+else
+  $vim -Nu $TEMP/mini-vimrc -c 'Vader test.vader'
+fi

test/test.vader

@@ -0,0 +1,106 @@
+Execute (Initialize test environment):
+  Save &rtp, g:plugs, g:plug_home, g:plug_window
+  unlet! g:plugs g:plug_home g:plug_window
+
+  let g:plug_url_format = 'file:///tmp/vim-plug-test/%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
+  let $PLUG_TMP = fnamemodify(tempname(), ':h').'/plug.vim'
+
+  " Temporarily patch plug.vim
+  call system('cp "$PLUG_SRC" "$PLUG_TMP"')
+  let patch =
+  \ ['function! ResetPlug()', 'let s:loaded = {}', 'endfunction',
+  \  'function! CompareURI(a, b)', 'return s:compare_git_uri(a:a, a:b)', 'endfunction']
+
+  call writefile(extend(readfile($PLUG_TMP), patch), $PLUG_TMP)
+
+  set t_Co=256
+  colo default
+  pclose
+
+  function! PlugStatusSorted()
+    PlugStatus
+    %y
+    q
+    normal! P
+    %sort
+    g/^$/d
+  endfunction
+
+  function! AssertExpect(bang, pat, cnt, ...)
+    let op = a:bang ? '==#' : '=~#'
+    let args = [a:cnt, len(filter(getline(1, '$'), "v:val ".op." '".a:pat."'"))] + a:000
+    call call('vader#assert#equal', args)
+  endfunction
+  command! -nargs=+ -bang AssertExpect call AssertExpect('<bang>' == '!', <args>)
+
+  function! EnsureLoaded()
+    if has('vim_starting')
+      runtime! plugin/**/*.vim
+    endif
+  endfunction
+
+  function! RmRf(file)
+    call system(printf('rm -rf "%s"', a:file))
+  endfunction
+
+  function! ReloadPlug()
+    call ResetPlug()
+    source $PLUG_TMP
+    let &rtp = g:base_rtp
+  endfunction
+
+  function! GitBranch(repo)
+    return system(printf('cd %s && git rev-parse --abbrev-ref HEAD', g:plugs[a:repo].dir))[:-2]
+  endfunction
+
+  function! GitTag(repo)
+    return system(printf('cd %s && git describe --tags', g:plugs[a:repo].dir))[:-2]
+  endfunction
+
+  function! GitCommit(repo)
+    return system(printf('cd %s && git rev-parse HEAD', g:plugs[a:repo].dir))[:-2]
+  endfunction
+
+  source $PLUG_TMP
+
+Execute (Print Interpreter Version):
+  redir => out
+  if has('ruby')
+    silent! ruby puts 'Ruby: ' + RUBY_VERSION
+  endif
+  if has('python')
+    silent! python import sys; svi = sys.version_info; print 'Python: {}.{}.{}'.format(svi[0], svi[1], svi[2])
+  endif
+  if has('python3')
+    silent! python3 import sys; svi = sys.version_info; print('Python: {}.{}.{}'.format(svi[0], svi[1], svi[2]))
+  endif
+  redir END
+  Log split(out, '\n')
+
+Include: workflow.vader
+Include: regressions.vader
+Include: functional.vader
+
+Execute (Cleanup):
+  silent! call RmRf(g:temp_plugged)
+  silent! unlet g:plugs g:plug_home g:plug_url_format
+  silent! unlet g:temp_plugged g:first_rtp g:last_rtp g:base_rtp out
+  silent! delf PlugStatusSorted
+  silent! delf AssertExpect
+  silent! delf PlugUpdated
+  silent! delf EnsureLoaded
+  silent! delf ReloadPlug
+  silent! delc AssertExpect
+  silent! unmap /
+  silent! unmap ?
+  call delete($PLUG_TMP)
+
+  Restore
+