Wht did I spend my whole day on a awesome vim config? :)

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-The NERDTree [![Vint](https://github.com/preservim/nerdtree/workflows/Vint/badge.svg)](https://github.com/preservim/nerdtree/actions?workflow=Vint)
-=============
-
-Introduction
-------------
-
-The NERDTree is a file system explorer for the Vim editor. Using this plugin,
-users can visually browse complex directory hierarchies, quickly open files for
-reading or editing, and perform basic file system operations.
-
-This plugin can also be extended with custom mappings using a special API. The
-details of this API and of other NERDTree features are described in the
-included documentation.
-
-![NERDTree Screenshot](https://github.com/preservim/nerdtree/raw/master/screenshot.png)
-
-Installation
-------------
-
-Below are just some of the methods for installing NERDTree. Do not follow all of these instructions; just pick your favorite one. Other plugin managers exist, and NERDTree should install just fine with any of them.
-
-#### Vim 8+ packages
-
-If you are using VIM version 8 or higher you can use its built-in package management; see `:help packages` for more information. Just run these commands in your terminal:
-
-```bash
-git clone https://github.com/preservim/nerdtree.git ~/.vim/pack/vendor/start/nerdtree
-vim -u NONE -c "helptags ~/.vim/pack/vendor/start/nerdtree/doc" -c q
-```
-
-Otherwise, these are some of the several 3rd-party plugin managers you can choose from. Be sure you read the instructions for your chosen plugin, as there typically are additional steps you nee d to take.
-
-#### [pathogen.vim](https://github.com/tpope/vim-pathogen)
-
-In the terminal,
-```bash
-git clone https://github.com/preservim/nerdtree.git ~/.vim/bundle/nerdtree
-```
-In your vimrc,
-```vim
-call pathogen#infect()
-syntax on
-filetype plugin indent on
-```
-
-Then reload vim, run `:helptags ~/.vim/bundle/nerdtree/doc/` or `:Helptags`.
-
-#### [Vundle.vim](https://github.com/VundleVim/Vundle.vim)
-```vim
-call vundle#begin()
-Plugin 'preservim/nerdtree'
-call vundle#end()
-```
-
-#### [vim-plug](https://github.com/junegunn/vim-plug)
-```vim
-call plug#begin()
-Plug 'preservim/nerdtree'
-call plug#end()
-```
-
-#### [dein.vim](https://github.com/Shougo/dein.vim)
-```vim
-call dein#begin()
-call dein#add('preservim/nerdtree')
-call dein#end()
-```
-
-#### [apt-vim](https://github.com/egalpin/apt-vim)
-```bash
-apt-vim install -y https://github.com/preservim/nerdtree.git
-```
-
-F.A.Q. (here, and in the [Wiki](https://github.com/preservim/nerdtree/wiki))
-------
-
-#### Is there any support for `git` flags?
-
-Yes, install [nerdtree-git-plugin](https://github.com/Xuyuanp/nerdtree-git-plugin).
-
----
-#### Can I have the nerdtree on every tab automatically?
-
-Nope. If this is something you want then chances are you aren't using tabs and
-buffers as they were intended to be used. Read this
-http://stackoverflow.com/questions/102384/using-vims-tabs-like-buffers
-
-If you are interested in this behaviour then consider [vim-nerdtree-tabs](https://github.com/jistr/vim-nerdtree-tabs)
-
----
-#### How can I open a NERDTree automatically when vim starts up?
-
-Stick this in your vimrc: `autocmd vimenter * NERDTree`
-
----
-#### How can I open a NERDTree automatically when vim starts up if no files were specified?
-
-Stick this in your vimrc:
-```vim
-autocmd StdinReadPre * let s:std_in=1
-autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif
-```
-
-Note: Now start vim with plain `vim`, not `vim .`
-
----
-#### What if I'm also opening a saved session, for example `vim -S session_file.vim`? I don't want NERDTree to open in that scenario.
-```vim
-autocmd StdinReadPre * let s:std_in=1
-autocmd VimEnter * if argc() == 0 && !exists("s:std_in") && v:this_session == "" | NERDTree | endif
-```
-
----
-#### How can I open NERDTree automatically when vim starts up on opening a directory?
-```vim
-autocmd StdinReadPre * let s:std_in=1
-autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | exe 'cd '.argv()[0] | endif
-```
-
-This window is tab-specific, meaning it's used by all windows in the tab. This trick also prevents NERDTree from hiding when first selecting a file.
-
-Note: Executing `vim ~/some-directory` will open NERDTree and a new edit window. `exe 'cd '.argv()[0]` sets the `pwd` of the new edit window to `~/some-directory`
-
----
-#### How can I map a specific key or shortcut to open NERDTree?
-
-Stick this in your vimrc to open NERDTree with `Ctrl+n` (you can set whatever key you want):
-```vim
-map <C-n> :NERDTreeToggle<CR>
-```
-
----
-#### How can I close vim if the only window left open is a NERDTree?
-
-Stick this in your vimrc:
-```vim
-autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
-```
-
----
-#### Can I have different highlighting for different file extensions?
-
-See here: https://github.com/preservim/nerdtree/issues/433#issuecomment-92590696
-
----
-#### How can I change default arrows?
-
-Use these variables in your vimrc. Note that below are default arrow symbols
-```vim
-let g:NERDTreeDirArrowExpandable = '▸'
-let g:NERDTreeDirArrowCollapsible = '▾'
-```
-You can remove the arrows altogether by setting these variables to empty strings, as shown below. This will remove not only the arrows, but a single space following them, shifting the whole tree two character positions to the left.
-```vim
-let g:NERDTreeDirArrowExpandable = ''
-let g:NERDTreeDirArrowCollapsible = ''
-```