My personal .vimrc aggregated from all over

.vimrc

"{{{Auto Commands
" Stole these from https://stackoverflow.com/a/171558

" Automatically cd into the directory that the file is in
autocmd BufEnter * execute "chdir ".escape(expand("%:p:h"), ' ')

" Remove any trailing whitespace that is in the file
autocmd BufRead,BufWrite * if ! &bin | silent! %s/\s\+$//ge | endif

" Restore cursor position to where it was before
augroup JumpCursorOnEdit
   au!
   autocmd BufReadPost *
            \ if expand("<afile>:p:h") !=? $TEMP |
            \   if line("'\"") > 1 && line("'\"") <= line("$") |
            \     let JumpCursorOnEdit_foo = line("'\"") |
            \     let b:doopenfold = 1 |
            \     if (foldlevel(JumpCursorOnEdit_foo) > foldlevel(JumpCursorOnEdit_foo - 1)) |
            \        let JumpCursorOnEdit_foo = JumpCursorOnEdit_foo - 1 |
            \        let b:doopenfold = 2 |
            \     endif |
            \     exe JumpCursorOnEdit_foo |
            \   endif |
            \ endif
   " Need to postpone using "zv" until after reading the modelines.
   autocmd BufWinEnter *
            \ if exists("b:doopenfold") |
            \   exe "normal zv" |
            \   if(b:doopenfold > 1) |
            \       exe  "+".1 |
            \   endif |
            \   unlet b:doopenfold |
            \ endif
augroup END

"}}}

"{{{ Begin plugins

call plug#begin('~/.vim/plugged')

"{{ Configuring NerdTree
Plug 'scrooloose/nerdtree'
   
  " ---> to hide unwanted files <---
  let NERDTreeIgnore = [ '__pycache__', '\.pyc$', '\.o$', '\.swp',  '*\.swp',  'node_modules/' ]
" ---> show hidden files <---
  let NERDTreeShowHidden=1
" ---> autostart nerd-tree when you start vim <---
  autocmd vimenter * NERDTree
  autocmd StdinReadPre * let s:std_in=1
  autocmd VimEnter * if argc() == 0 && !exists("s:stdn_in") | NERDTree | endif
" ---> toggling nerd-tree using Ctrl-N <---
  map <C-n> :NERDTreeToggle<CR>
"}}

"{{ Configuring YouCompleteMe
Plug 'valloric/youcompleteme', { 'do': './install.py' }
  
  " ---> youcompleteme configuration <---
  let g:ycm_global_ycm_extra_conf = '~/.vim/.ycm_extra_conf.py'
  
  " ---> compatibility with another plugin (ultisnips) <---
  let g:ycm_key_list_select_completion = [ '<C-n>', '<Down>' ] 
  let g:ycm_key_list_previous_completion = [ '<C-p>', '<Up>' ]
  let g:SuperTabDefaultCompletionType = '<C-n>'
" ---> disable preview window <---
  set completeopt-=preview
" ---> navigating to the definition of a a symbol <---
map <leader>g  :YcmCompleter GoToDefinitionElseDeclaration<CR>
"}}

"{{ Color-scheme
Plug 'morhetz/gruvbox'
  set background=dark
  colorscheme gruvbox
  let g:gruvbox_contrast_dark='default'
"}}

"{{ TMux - Vim integration
Plug 'christoomey/vim-tmux-navigator'
"}}



call plug#end()

"}}}

set showcmd             " Shows what you are typing as a command

set foldmethod=marker   " Folding method

set smarttab            " Inserts spaces when you hit tab?
set tabstop=2           " Display <TAB>s as 2 spaces wide
set softtabstop=2       " Insert 2 spaces for every <TAB> when editing
set expandtab           " Expand <TAB>s in editing to spaces instead
set shiftwidth=2        " Insert 2 spaces for code folding
syntax enable           " Enable syntax highlighting

set autoindent          " Enable auto-indenting
set ignorecase          " Ignore case for search/replace
set smartcase           " Enables case searching if case is used

inoremap jj <Esc>       " Remap jj to escape in insert mode.

nnoremap <silent> <Leader>ev :tabnew<CR>:e ~/.vimrc<CR>  " Edit vimrc \ev

set number              " Turn on line numbers
set showcmd             " Show the last command in the boTtom right
set cursorline          " Highlight the line the cursor is on
filetype indent on      " Load filetype-specific indent config (is this needed?)
set showmatch           " Mark the closing [{( )}] 's in code

set incsearch           " Incrementally search
set hlsearch            " Highlight search matches
set nocompatible        " Turn off compatible before vim initializes
set encoding=utf-8
filetype plugin indent on

call plug#begin('~/.vim/plugged')

call plug#end()