My vim config

init.vim

" Specify a directory for plugins
" - For Neovim: ~/.local/share/nvim/plugged
" - Avoid using standard Vim directory names like 'plugin'
call plug#begin('~/.local/share/nvim/plugged')

" Make sure you use single quotes

" Airline is a plugin that makes the status line look fancier.
" It requires a custom font (with arrows), and is completely optional
Plug 'vim-airline/vim-airline'

Plug 'vim-airline/vim-airline-themes'

" A more convenient (than default) directory browser for Vim
Plug 'scrooloose/nerdtree'

" This is a core plugin to support autocompletion for most of the things.
" This is also the messiest one, as it requires manual (and periodic) 
" invocation of the build script.
Plug 'Valloric/YouCompleteMe'

" Autocompletion for Python
Plug 'davidhalter/jedi-vim'

" Highlights new/mofified/deleted lines in the "gutter"
Plug 'airblade/vim-gitgutter'

" Later in the config I'll bind this plugin to "gc"
" Typing "gc" will comment out a block or line of code in any language
Plug 'tpope/vim-commentary'

" A Git plugin with a crazy useful command :GitBlame
" Don't wait, blame someone else!
Plug 'tpope/vim-fugitive'

" A collection of colorschemes. Doesn't include my favorite one though.
Plug 'flazz/vim-colorschemes'

" If you prefer Ctrl+h/j/k/l for navigating across vim/tmux splits,
" this plugin will integrate Vim and Tmux, so that you can seamlessly
" Jump across the border of a vim/tmux split
Plug 'christoomey/vim-tmux-navigator'

" This is the interesting one: it generates a Tmux config that makes
" a tmux status line look like a vim airline with an applied theme
Plug 'edkolev/tmuxline.vim'

" A wrapper around silversearcher-ag
Plug 'rking/ag.vim'

" A Vim plugin for all things Go. Supports autocompletion,
" smart code navigation, linting, and much more
Plug 'fatih/vim-go'

" Never got used to this one, but it allows for wrapping a piece of
" text into "", '', or custom tags
Plug 'tpope/vim-surround'

" Fzf for ffffuzzzy search~
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'

" Neomake for asynchronous linting and building
Plug 'neomake/neomake'

" A beautiful autopep8. Have it bound to "ap"
Plug 'tell-k/vim-autopep8'

" Import sorter for Python
Plug 'fisadev/vim-isort'

" Initialize plugin system
call plug#end()

set updatetime=500

" Neomake configs to make it a bit less annoying

" When writing a buffer.
call neomake#configure#automake('w')
" When writing a buffer, and on normal mode changes (after 750ms).
call neomake#configure#automake('nw', 750)
" When reading a buffer (after 1s), and when writing.
call neomake#configure#automake('rw', 1000)
let g:neomake_open_list = 2

" Airline setup

set laststatus=2
let g:airline_powerline_fonts = 1
let g:airline_theme = "jellybeans"

" Jedi-vim configuration
let g:jedi#show_call_signatures = 1 
let g:jedi#popup_select_first = 0
let g:jedi#completions_enabled = 0
autocmd FileType python setlocal completeopt-=preview


" Turn on line numbers
set nu
" Turn on syntax highlighting
syntax on
" It hides buffers instead of closing them.
" https://medium.com/usevim/vim-101-set-hidden-f78800142855
set hidden
" Highlights search results as you type vs after you press Enter
set incsearch
" Ignore case when searching
set ignorecase
set smartcase 
" Turns search highlighting on
set hlsearch
" Expands TABs into whitespaces
set expandtab
set shiftwidth=4  
" Exclude these files from *
set wildignore=*.swp,*.bak,*.pyc,*.class
" Turn on TrueColor
set termguicolors

if executable('ag')
  " Use ag over grep
  set grepprg=ag\ --nogroup\ --nocolor

  " Use ag in CtrlP for listing files. Lightning fast and respects .gitignore
  let g:ctrlp_user_command = 'ag %s -l --nocolor --ignore .git --ignore build-out --ignore build-opt --ignore build-dbg -g ""'

endif

" This colorscheme mimics a default Atom colorscheme which I quite like
colorscheme onedark

" Ctrl+P opens a fuzzy filesearch window (powered by Fzf)
nnoremap <C-p> :Files<CR>


" Switch to last active tab
let g:lasttab = 1
" I really like tt for switching between recent tabs
nmap tt :exe "tabn ".g:lasttab<CR>
au TabLeave * let g:lasttab = tabpagenr()

" A bit of autopep8 config
let g:autopep8_disable_show_diff=1
" ap for a quick .py file formatting
nnoremap ap  :Autopep8<CR>
" This is a quick way to call search-and-replace on a current word
nnoremap <Leader>s :%s/\<<C-r><C-w>\>//g<Left><Left>
" cc now hides those annoying search highlihghts after you're done searching
nnoremap cc :let @/ = ""<cr>
" \e to open a NerdTree at in the directory of the currently viewed file
nnoremap <Leader>e :Ex<CR>
" I said write it!
cmap w!! w !sudo tee % >/dev/null

" Don't expland tabs for Go
autocmd BufRead,BufNewFile   *.go setlocal noexpandtab