My vim configuration

.vimrc

" [ CORE ] ------------------------------------------------------------------
"  Very much needed settings to provide a solid base for source code editting
"  DEPENDENCIES:
"  - vim-plug: For managing plugins
"  - ag: The silver searcher
"  - editorconfig: For projects where common configuration is important
"  - SourceCodePro: Pretty font for coding
" ---------------------------------------------------------------------------
 
" don't make vim compatible with vi
set nocompatible
 
" turn on syntax highlighting
syntax on
 
" make vim try to detect file types and load plugins for them
filetype on
filetype plugin on
filetype indent on
 
" reload files changed outside vim
set autoread
 
" default encoding to utf 8
set encoding=utf-8
set fileencoding=utf-8
 
" enable matchit plugin which ships with vim and greatly enhances `%`
runtime macros/matchit.vim
 
" in insert mode, force backspace to delete over line breaks, or
" automatically-inserted indentation.
set backspace=indent,eol,start
 
" allow to leave unsaved buffers and keep them in the background
set hidden
 
" the order in which vim tries the file formats when reading a new file. The
" first one is the default for new buffers
set fileformats=unix,dos,mac
 
" screen will not be redrawn while running macros, registers or other
" non-typed comments
set lazyredraw
 
" [ CUSTOMIZATION ] ---------------------------------------------------------
"  The following are some extra mappings/configs to enhance my personal
"  VIM experience
" ---------------------------------------------------------------------------

" use relative line numbers for better j/k navigation
set relativenumber

" use `,` as mapleader
let mapleader = ","
 
" map <leader>v to toggle active buffers
noremap <leader>v :b#<CR>
 
" windows-like clipboard
" yank to and paste from the clipboard without prepending "* to commands
let &clipboard = has('unnamedplus') ? 'unnamedplus' : 'unnamed'
" map c-x and c-v to work as they do in windows, only in insert mode
vm <c-x> "+x
vm <c-c> "+y
cno <c-v> <c-r>+
exe 'ino <script> <C-V>' paste#paste_cmd['i']
 
" save with ctrl+s
nmap <c-s> :w<CR>
imap <c-s> <Esc>:w<CR>a
 
" allow Tab and Shift+Tab to
" tab  selection in visual mode
vmap <Tab> >gv
vmap <S-Tab> <gv 
 
" remove the .ext~ files, but not the swapfiles
set nobackup
set writebackup
set noswapfile
 
" search settings
set incsearch        " find the next match as we type the search
set hlsearch         " highlight searches by default
" use ESC to remove search higlight in normal mode
nnoremap <esc> :noh<return><esc>
nnoremap <esc>^[ <esc>^[
 
" most of the time I should use ` instead of ' but typing it with my keyboard
" is a pain, so just toggle them
nnoremap ' `
nnoremap ` '
 
" suggestion for normal mode commands
set wildmode=list:longest
 
" keep the cursor visible within 3 lines when scrolling
set scrolloff=3
 
" indentation
set expandtab       " use spaces instead of tabs
set autoindent      " autoindent based on line above, works most of the time
set smartindent     " smarter indent for C-like languages

" tabs are 2 spaces
set shiftwidth=2    " when reading
set softtabstop=2   " in insert mode

" use 4 spaces for...
autocmd FileType php setlocal shiftwidth=4 softtabstop=4 

" no lines longer than 80 cols, use this for markdown
autocmd FileType markdown setlocal textwidth=80
 
" use <S-Space> for Vim's keyword autocomplete
inoremap <C-Space> <C-n>
 
" On file types...
"   .md files are markdown files
autocmd BufNewFile,BufRead *.md setlocal ft=markdown
"   .twig files use html syntax
autocmd BufNewFile,BufRead *.twig setlocal ft=html
"   .mustache files use html syntax
autocmd BufNewFile,BufRead *.mustache setlocal ft=handlebars
"   .less files use less syntax
autocmd BufNewFile,BufRead *.less setlocal ft=less
"   .jade files use jade syntax
autocmd BufNewFile,BufRead *.jade setlocal ft=jade
"   .coffee files use coffeescript syntax
autocmd BufNewFile,BufRead *.coffee setlocal ft=coffee
 
" when pasting over SSH it's a pain to type :set paste and :set nopaste
" just map it to <f9>
set pastetoggle=<f9>
 
" select all mapping
noremap <leader>a ggVG

" use <C-h> abd <C-j> to move lines up and down
nnoremap <C-j> :m .+1<CR>==
nnoremap <C-k> :m .-2<CR>==
inoremap <C-j> <ESC>:m .+1<CR>==gi
inoremap <C-k> <ESC>:m .-2<CR>==gi

" always display the status line
set laststatus=2

" disable Ex mode, never use it anyways
noremap Q <Nop>

" [ PLUGINS & VISUALS ] -----------------------------------------------------
" Plugin-related configuration
" ---------------------------------------------------------------------------

" initiate vim-plug
call plug#begin('~/.vim/plugged')
 
" -- Generic
Plug 'tpope/vim-vinegar'              " awesome and simplistic file navigation
Plug 'ctrlpvim/ctrlp.vim'             " more actively maintained fork of ctrlp
Plug 'itchyny/lightline.vim'          " lightweight and pure vimscript status bar
Plug 'tpope/vim-surround'             " visual mode surround
Plug 'jiangmiao/auto-pairs'           " smart () [] {} matching
Plug 'tpope/vim-endwise'              " similar to the one above but this one inserts `end` where needed
Plug 'editorconfig/editorconfig-vim'  " compatibility with .editorconfig files
Plug 'ervandew/supertab'              " dummy autocomplete in insert mode using <TAB>
Plug 'mbbill/undotree'                " display a graph of the undo history when needed
" -- Web Development
Plug 'scrooloose/syntastic'           " linters
Plug 'mattn/emmet-vim'                " emmet/zen-coding
Plug 'kchmck/vim-coffee-script'       " coffeescript support
Plug 'hail2u/vim-css3-syntax'         " css3 support
Plug 'slim-template/vim-slim'         " slim support
Plug 'joukevandermaas/vim-ember-hbs'  " ember hbs support
Plug 'kana/vim-textobj-user' | Plug 'whatyouhide/vim-textobj-xmlattr' " xml tags as text objects
" -- Theme
Plug 'gosukiwi/vim-atom-dark' " pretty colors
 
" end plugin definition
call plug#end()

" set light line theme
let g:lightline = {
      \ 'colorscheme': 'wombat',
      \ }
 
" mappings for ctrlp
noremap <leader>b :CtrlPBuffer<cr>
noremap <leader>f :CtrlP<cr>
" no max files limit
let g:ctrlp_max_files = 0
" use ag when seeking files, super fast and ignores .gitignore and such
let g:ctrlp_user_command = 'ag %s -l --nocolor -g ""'
 
" use emmet with <C-E>
let g:user_emmet_leader_key = '<c-e>'
 
" set editorconfig-core path
let g:EditorConfig_exec_path = '/usr/local/bin/editorconfig'

" toggle UndoTree
nmap <leader>u :UndotreeToggle<cr>

" syntastic settings
set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*

let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 1
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0
let g:syntastic_disabled_filetypes=['handlebars']

" use Adobe's Source Code Pro font
set guifont=Source\ Code\ Pro

" set the color theme to atom-dark
if has("gui")
  colorscheme atom-dark
else
  colorscheme atom-dark-256
end

" make a mark for column 80
set colorcolumn=80
" and set the mark color to lightgray
highlight OverLength ctermbg=lightgray guibg=lightgray